BOSE BUILT-INVISIBLE TA-1 Service Manual

Safety Information ............................................................................................................................2

Electrostatic Discharge Sensitive (ESDS) Device Handling .........................................................2

Warranty.............................................................................................................................................2

Specifications ....................................................................................................................................3

Speaker EQ Curves ..........................................................................................................................4

Theory of Operation ................................................................................................................... 5-21

Disassembly/Assembly Procedures ....................................................................................... 21-22

Test Procedures ........................................................................................................................ 23-30

Part List Notes .................................................................................................................................31

Main Part List, Digital BUILT-INvisible

Figure 1. Input/Output PCB, DSP PCB and Chassis Exploded View .............................................32

Figure 2. Amplifier PCB Assembly with Heatsink Exploded View .................................................. 33

Figure 3. Assembled Amplifier with Heatsink Open ........................................................................34

Electrical Part Lists ................................................................................................................... 35-55

I/O PCB Electrical Part List ...................................................................................................... 35-41

DSP PCB Electrical Part List ................................................................................................... 42-48

Amplifier PCB Electrical Part List ........................................................................................... 49-55

Packaging Part List, Digital BUILT-INvisible System (see Figure 4) ...........................................56

Figure 4. Digital BUILT-INvisible System Packaging View ..............................................................56

Integrated Circuit Diagrams..................................................................................................... 57-61

Appendix.................................................................................................................................... 62-80

Accessories used with the TA-1 Amplifier.............................................................................. 62-63

CD-50 System Assembly Part List ................................................................................................63

BUILT-INvisible Series II Bass Module .........................................................................................64

SE-1 Audio/Video Switcher ............................................................................................................65

Figure 5. SE-1 Audio/Video Switcher Packing Diagram .................................................................65

CI-1 Control Integrator ...................................................................................................................66

Figure 6. CI-1 Control Integrator Packing Diagram .........................................................................66

Figure 7. TA-1 Amplifier Test Setup Diagram ...................................................................................67

Figure 8. TA-1 Amplifier Connection Diagram .................................................................................68

Table 1. Satellite Speaker EQ DIP Switch Settings ........................................................................71

Computer Setup Procedure ..................................................................................................... 72-73

Amplifier Firmware Upgrade Procedure.......................................................................................74

TA-1 Amplifier TAP Command Tables ..................................................................................... 75-78

System Troubleshooting Information ..................................................................................... 79-80

Figure 9. TS-200 System Connection Details .................................................................................81

Figure 10. TS-400 System Connection Details ...............................................................................82

Figure 11. TS-600 System Connection Details ...............................................................................83

Amplifier (see Figures 1, 2 and 3) ................................31

CAUTION: The Bose® BUILT-INvisible® TA-1 amplifier contains

no user-serviceable parts. To prevent warranty infractions,

refer servicing to warranty service stations or factory service.

PROPRIETARY INFORMATION

THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF BOSE CORPORATION WHICH IS BEING FURNISHED ONLY FOR THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT BY AN

AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE BOSE

PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY

OTHER PURPOSE.

SAFETY INFORMATION

1. Parts that have special safety characteristics are identified by the symbol on schematics

or by special notes on the parts list. Use only replacement parts that have critical characteristics recommended by the manufacturer.

2. Make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit before returning the unit to the customer. Use the following checks to perform these measurements: A. Leakage Current Hot Check-With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. Do not use an isolation transformer during this test. Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 "Leakage Current for Appliances" and Underwriters Laboratories (UL) 6500 / IEC 60056 paragraph 9.1.1. With the unit AC switch first in the ON position and then in OFF position, measure from a known earth ground (metal waterpipe, conduit, etc.) to all exposed metal parts of the unit (antennas, handle bracket, metal cabinet, screwheads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milliamp. Reverse the unit power cord plug in the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE UNIT TO THE CUSTOMER. B. Insulation Resistance Test Cold Check-(1) Unplug the power supply and connect a jumper wire between the two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure the resistance with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on the unit. When testing 3 wire products, the resistance measured to the product enclosure should be between 2 and infinite MOhms. Also, the resistance measured to exposed input/output connectors should be between 4 and infinite MOhms. When testing 2 wire products, the resistance measured to exposed input/output connectors should be between 4 and infinite MOhms. If it is not within the limits specified, there is the possibility of a shock hazard, and the unit must be repaired and rechecked before it is returned to the customer.

ELECTROSTATIC DISCHARGE SENSITIVE (ESDS)

DEVICE HANDLING

This unit contains ESDS devices. We recommend the following precautions when repairing, replacing or transporting ESDS devices:

• Perform work at an electrically grounded work station.

• Wear wrist straps that connect to the station or heel straps that connect to conductive

floor mats.

• Avoid touching the leads or contacts of ESDS devices or PC boards even if properly grounded. Handle boards by the edges only.

• Transport or store ESDS devices in ESD protective bags, bins, or totes. Do not insert unprotected devices into materials such as plastic, polystyrene foam, clear plastic bags, bubble wrap or plastic trays.

WARRANTY

The Bose® BUILT-INvisible® TA-1 Theater Amplifier is covered by a 1-year transferable

limited warranty

SPECIFICATIONS

Power Output (all channels loaded): Bass Channel: 140 Watts at 100 Hz into 4 Ohms

Satellite Channels: 35 Watts at 1 kHz into 8 Ohms

Distortion: Bass Channel: < 0.4% THD at 0.5W

Satellite Channels: < 0.1% THD at 0.5W

Output Noise: Bass Channel: < 2 mVrms, unweighted

Satellite Channels: < 400 uVrms, A weighted

Signal to Noise Ratio: 96 dB

DC Offset: < 50 mVdc, all channels

Satellite Balance:

Satellite Separation: > 40 dB at 1 kHz, > 30 dB at 10 kHz, stereo mode

Standby Line Power: < 5 W at rated line voltage (plugged in, music center off) Idle Line Power: < 15 W at rated line voltage (plugged in, music center

Analog Input Impedance: 5.0k Ohms + 10% at 1 kHz S/PDIF Input Impedance: 75 Ohms + 10% at 100 kHz

Analog Input Sensitivity: 0.5 Vrms input at 100 Hz/1 kHz for rated power in

Analog Input CMRR: > 40 dB at 60 Hz, within + 12V common mode

Compressor: > 20 dB compression from 200-10 kHz with distortion

Turn On Delay: 1.5 Seconds maximum Turn Off Delay: < 200 mS

+ 1.5 dB for volume settings 0 to -79 dB

on and muted)

bass/satellite channels

throughout the compression range < 3% at 1 kHz and < 4% at 50 Hz

Volume Control Attenuation Range: 0 dB to -80 dB Center Volume Control Range: -6 dB to 0 dB in 1 dB steps, 0 dB to 9 dB in 1.5 dB steps Surround Volume Control Range: -6 dB to 0 dB in 1 dB steps, 0 dB to 9 dB in 1.5 dB steps

Audio Inputs: Audio and audio for video

Control Inputs: IR, Serial (RS-232), Speaker Data (Music Center), and

TV Sense (logic level)

Indicators: Power, Standby/Command, Setup/Analog Input, Fault/

Digital Input

Power Supply: 110-120 Vac, 60 Hz, 400W, 3.63 Amps

Dimensions: 15.75"H x 10.75"W x 3.38"D (40cm x 27.3cm x 8.6cm)

Unit Weight: 16 lbs (7.25 kg)

SPEAKER EQ CURVES

CS-2 Satellite Speaker EQ Curve Jewel Cube® Satellite Speaker EQ Curve

Residential 131® Satellite Speaker EQ Curve

VCS-10® Center Channel Speaker EQ Curve

Residential 1.2 Ohm Speakers

EQ Curve

Acoustimass® Series II Bass Module

EQ Curve

General Overview

THEORY OF OPERATION

The Bose® Digital BUILT-INvisible® amplifier is a six-channel system with DSP-based Dolby

Digital 5.1 decoding and Videostage® II signal processing. It is intended for built in installations in Bose residential sound systems. Its six channels will normally be presenting sound for home theater, in 5.1 format.

The Digital BUILT-Invisible amplifier has a total of six audio inputs:

- stereo analog audio for a music source

- stereo analog audio for a video source

- four digital audio for stereo or multi-channel Dolby Digital 5.1 audio (SPDIF coax)

Furthermore, the Digital BUILT-Invisible amplifier has a number of control ports:

- Lifestyle® music center compatible input

- RS-232C serial bi-directional port

- TV Sensor input

- Remote IR sensor input

- IR diode

The amplifier responds to the various SmartSpeaker commands issued from the various Bose Lifestyle

head-end units, such as the CD-5, CD-20 and the PMC/MRI used with the Lifestyle

40 and 50 systems. The amplifier can also be controlled via an external master remote control (Philips) used in conjunction with either the CI-1 Control Integrator or the SE-1 Expander.

The Digital BUILT-Invisible amplifier is packaged in a metal enclosure, consisting of a steel base and an aluminum extrusion cover. Internally, the electronics consist of:

- Input/Output (I/O) PCB

- Power Amplifier PCB

- DSP (Digital Signal Processor) PCB

- Toroidal power transformer

Input/Output (I/O) PCB

Note: Unless otherwise noted, refer to the schematic diagram for the Input/Output board for the

following information. The references in brackets [ ] are the grid coordinates for the component.

Analog audio inputs

The audio signals are applied at J6 [A4] and J21 [A3]. J6 is used for Music Audio Inputs and J21 is used for Video Audio Inputs. U1, 2, 7, & 8 [A2-4], dual op amps, comprise the four differential amplifiers for these inputs. Each differential amplifier uses two op amp sections. The non-inverting (+) input passes through two inverting sections, while the inverting (–) input passes through only the second inverting section. In this way, the amplifier responds to the difference between the non-inverting (+) input and the inverting (–) input. External signals appearing in common on the two input pins (capacitively or inductively coupled noise) are subtracted and are largely eliminated. To improve common mode rejection, the critical resistances are packaged in a precision thin film network RN1 [A4] with a high degree of matching. To protect the differential amplifier against ESD and the presence of higher than normal audio signals with or without power present, series resistors R105 and R106 [A4] and D25 and D26 [A4] provide clamps. Further ESD protection comes from the spark gap PCB patterns. C3 and C5 [A4] provide low pass filtering to remove RF that could be picked up by input wiring.

THEORY OF OPERATION

Input/Output (I/O) PCB (continued)

S1 [A3] section 1, a user accessible switch, is used to connect the left and right inverting (–) pins of the Music Inputs together. S1-section 2 is used to connect the left and right – pins of the Video Inputs together. This is sometimes desirable for certain installation wiring situations, such as where the source wiring presented to the TA-1 amplifier is left non-inverting (+), right +, and a common ground (unbalanced). One might choose to close S1 and connect left + to left +, right + to right +, and common ground to left – (S1 will tie left – to right – in this case).

Analog audio input selector

The two stereo inputs, Music Audio and Video Audio, after passing through their differential amplifiers, are presented to U3 [B4], an analog multiplexer at pins 4, 5, 12 and 13. When the Set_Audio (U3 pin 1) input is high, the Video Audio input is selected and passes through. When the Set_Audio line is low, the Music Audio input is selected. From U3’s outputs at pins 8 and 9, the analog audio signals pass to J4-12 and 14, which carries them onto the DSP PCB, where they enter the codec U100, [DSP schematic sheet 1, C4] and are converted to digital audio signals.

Digital audio inputs

The four S/PDIF digital audio signals are delivered via J7 [C3], each in differential form. A typical S/PDIF source, Source 1, is presented on J7-4 and J7-5 and passes through a DC blocking capacitor (to keep the small transformer free of a DC bias) and into T1 [D3]. At the secondary, the transformer is terminated in 75 Ohms to match the source impedance for best pulse fidelity. Also at the secondary, the signal is referenced to ground and clamped to about +/-0.65 volts by diode D8. The clamp is only active for higher than normal S/PDIF sources, but also protect the inputs of U9 [D3], especially if signals are present while the power is off.

Digital audio input selector

The four single-ended digital sources are presented to U9 [D3], an analog multiplexer. Signals DIG_SEL_A and DIG_SEL_B from the microcontroller U5 [C4] select one of the four inputs for passage through U9. Signal DIG_EN can be used to disable the output regardless of the source selection. From U9’s output, the selected SPDIF signal passes to J4-8 [E4], which carries it onto the DSP PCB, where it enters a codec U100, [DSP schematic sheet 1, C4] and is unpacked to yield the embedded digital audio signals.

Power amplifier outputs

The power amplifier output devices U700, U701, U703, U704, U705 and U707 (and associated power transistors) [amplifier PCB schematic sheet 1] are located on the power amplifier PCB which is attached to the extruded top cover. The amplifier output signals and their ground returns are carried via a wire harness from J701 [power amp schematic sheet 2, A-C7] on the amplifier PCB to J22 [D2] on the I/O PCB. The six amplifier outputs are directly wired to the appropriate loudspeaker connectors along the right hand edge of the PCB. The RC networks [E2] contribute to amplifier stability and reduce EMC and ESD events.

Power supplies, +8V and +5V

The I/O PCB receives the AC mains power via J5 [C2] and S9, and through fuses F3 and F4. The +8V and +5V supplies provide keep-alive voltages to the I/O PCB control circuitry that enable the amplifier to remain in standby mode, but also allow it to wake up and go into operate mode when it receives commands to do so. When main power switch S9 is on, the +8V and +5V supplies are energized. At first, the amplifier will be in standby mode, characterized by the presence of +8V and +5V, but with the triac Q6 [C1] off.

THEORY OF OPERATION

Input/Output (I/O) PCB (continued)

Power supplies, +8V and +5V (continued)

Until Q6 is turned on, the rest of the amplifier (the Power Amplifier and DSP PCBs) is off. The AC mains is applied to T5 [C1], rectified by D22 (full wave bridge), and filtered by C31. The +5V supply is created by U12 [C1] in a standard 3 terminal regulator application; so too is +8V, created by U14. These supplies only deliver very low power outputs, capable of no more than two to three watts total.

Power supply, main transformer control

The amplifier’s main power supply is created from the secondaries of a large toroidal transformer that is turned on and off by the triac Q6. This is the transformer mounted in the center of the I/O PCB. The secondary leads of this transformer connect via J702 to the Power Amplifier PCB, where various power supply voltages are created, including the +/-12V supplies returned to the I/O PCB to power the op amps and signal selectors. The +/-12V leave the amplifier PCB at J701 pins 13 and 15 and enter the I/O PCB at J22 pins 13 and 15.

A logic signal (AMP_POWER) from the microcontroller U5 [C4] at pin 11, goes high to turn on the main power supply. AMP_POWER high causes base current in Q7 [C1], which in turn causes the LED in Q5 to turn on. The opto-coupled LED turns on the internal triac in Q5 which, finally, turns on the gate of triac Q6 and energizes the transformer.

Pulse Width Modulated tone control low pass filters, U15

The I/O PCB interprets user commands to change the bass and/or treble levels by delivering an analog voltage between 0V (cut), +2.5V (flat), and +5V (boost) to the DSP PCB. The microcontroller U5 develops this analog voltage by controlling two of its output pins in pulse width modulation mode. The inherent switching activity in PWM outputs requires a low pass filter, in this case a 2 Clamp diodes D36 and D38 on the op amp outputs keep the filter output within bounds for its destination, the DSP microcontroller U202 on the DSP PCB. The signals TREBLE and BASS are passed to the DSP microcontroller U202 via J4-1 and J4-2 [E4].

TV Sensor input

J11 [A1], a three pin connector, provides ground and +8V (via resetable fuse F2 [A1]) for use by a small TV sensor that must be attached to the TV monitor in the home theater. The TV sensor circuitry returns a DC signal via J11-1 which, when high, indicates that the TV set is on. This will cause the amplifier to turn on (if it is not already on). The TV sensor input is monitored by microcontroller U5 [C4] at pin 8.

IR input

J10 [A1] acts as the gateway for incoming demodulated IR signals used by remote controls. These signals are ultimately monitored by the microcontroller U5 [C4] and are sent to the DSP PCB at J4 [E4]. One form of IR delivery is the electrical signal (logic level) from an externally mounted IR receiver chip. This would typically be located in the home theater room, where it would pick up IR radiation from a user remote control, decode it, and send it by wire to J10-3. This signal is clamped and sent to AND gate U16 [B1], which acts as an OR selector for low levels coming from this IR input and from the internal IR sensor. The second form of IR delivery is via an electrical signal sent to J10-1 and –2. When this signal is asserted, the internal IR emitter D3 [A1] is turned on and emits IR within the amplifier. This optically couples to IR sensor U11 [A1] which toggles low and high, decoding the IR signal. This signal passes to U16’s second input, where it is OR’d with the IR source discussed above. Finally, the IR signal is sent to the microcontroller U5 [C4] as the signal IR_IN on U5 pin 7.

order filter consisting of passive components and the dual op amp U15 [C2].

THEORY OF OPERATION

Input/Output (I/O) PCB (continued)

Music Center input

J8 [A1], a four pin connector, provides a connection from a Bose

Lifestyle® music center to the amplifier. This connector serve two functions. It can be used for connection to a Bose Lifestyle music center or alternately for remote terminal access by means of an IBM compatible PC. A table will help explain this.

J8 Functions

Mode: Normal Lifestyle connection

Turn_on signal from Lifestyle the amplifier

Speaker data sent from Lifestyle to the amplifier



Mode: Remote terminal access

RS-232 RX line, data sent from RS-232C terminal or PC to the amplifier



RS-232C TX line, data sent from the amplifier to RS-232C terminal or PC

3 Antenna signal DTR: RS-232C terminal or PC sets this

high to tell the amplifier to operate in the Remote Terminal Access mode

4 ground reference ground reference

In the Remote Terminal Access mode, a system installer can set up a notebook PC in the home theater room and run InstallerTM software to custom equalize and balance the amplifier system for the customer’s particular home theater room. The installer would connect the PC’s RS-232C serial output to the Lifestyle® connector on the Bose wall panel, temporarily disconnecting the Lifestyle® music center. Switching between the two modes is accomplished via the DPDT relay K1 [A1]. K1, shown in the deenergized state (Normal Lifestyle® mode), is controlled by the logic level signal provided to pin 3 when the remote terminal is present and has activated DTR.

RS-232C input/output

The amplifier in some installations may work entirely under RS-232C control. Such installations may have Crestron or AMX remote control devices. J9 [A2] provides for RX, TX, and ground connections to such a terminal. Since RS-232 sources can present electrical waveforms swinging between up to +/-12V, the RX signal is passed through a special RS-232C to TTL translator, part of IC U10. In the same fashion, to permit the amplifier to transmit a bipolar TX signal, the TX source is buffered on the way out through the output section of U10.

S4, Speaker EQ switch, and J1, Header to Test Accessory

The four signals controlled by S4 [B3] are read by the microcontroller U5 [C4] during initial power-up of the amplifier. Refer to the Appendix of this manual for the EQ settings of S4. J1 connects the I/O PCB with the test accessory. This connector is not used on production amplifiers.

THEORY OF OPERATION

Input/Output (I/O) PCB (continued)

Power supply failure monitor level translator

There are four power supplies on the power amplifier PCB, derived as two pairs of symmetrical bipolar supplies. By tying each of these supplies into a node by appropriate resistor values, we have a node that sits at zero volts when all supplies are normal. If one or more supplies deviates sufficiently, we want to detect this as an error. The node PROTECT is brought out of the amplifier PCB at J701 pin 11 [amplifier sheet 2, A7] and onto the I/O PCB at J22 pin 11 [D2] and connects to Q1 and Q2 [D2]. Q2 turns on when PROTECT exceeds about 0.5V, while Q1 turns on when PROTECT exceeds about –0.5V. This dual transistor’s output (Q1 collector) is normally high, reflecting the state where all six power supplies on the power amplifier PCB are within normal limits. When either transistor turns on, the output signal BUF_PROTECT_N out of Q1 goes low, indicating a failure. The PROTECT signal also becomes active when there is a DC offset failure in the bass speaker amplifier.

When the PROTECT signal becomes active, the microcontroller (U5) [C4] on the I/O PCB responds by placing the unit into the Standby state, where the main power transformer is deenergized. The Fault LED D29 [D4] flashes on and off when this occurs. The next time a user command is issued, it attempts to turn on, and will stay on if the fault has been cleared; otherwise, it will again switch to the Standby state.

Microcontroller U5 and related circuits

The I/O PCB requires its own microcontroller to monitor the serial interfaces, the installer DIP switches, the TV sensor, etc. It is responsible for passing along control commands to the microcontroller U202 [DSP schematic sheet 2, C5] on the DSP PCB. The I/O PCB’s microcontroller U5 is clocked internally by an oscillator using the crystal Y1 [C3]. The microcontroller can write and read to the optional (not installed) EEPROM U6 [C3]. A reset generator U4 [C4] ensures that the microcontroller wakes up and executes its reset routine when power is turned on or momentarily interrupted. The microcontroller handles the 3 LEDs [D4] Command (D28), Fault (D29), and Setup (D30). It also reads the configuration DIP switches contained in S7 [D4], as well as the speaker EQ switches S4 [B3]. Other functions (bass and treble PWM outputs, etc.) have been mentioned elsewhere in this presentation.

Digital Signal Processor (DSP) PCB

Signal Processing Note: Unless otherwise noted, refer to the schematic diagrams for the DSP board for the follow-

ing information. The references in brackets [ ] are the schematic sheet and grid coordinates for the component.

The Digital BUILT-INvisible PCM (digitized 2-channel audio) or the AC-3 output from up to four separate digital sources. AC-3, also known as Dolby® Digital, is a perceptual coding and data compression technique that allows 5 wideband channels and one low frequency bass channel (5.1) to be compressed into less bandwidth than would be required for 2-channel PCM.

amplifier has the ability to receive a digital S/PDIF bitstream, either

The Videostage® 5 processing used in the amplifier expands a L, R input pair into L, C, R, S and bass, but adds a few new features over previous versions of Videostage, such as stereo surround channels and a mono to 5 channel mode. The mono to 5 channel mode is a way of processing a mono soundtrack such that all 5 speakers receive parts of the signal. The amplifier will also accept two analog inputs directly at the input jacks.

THEORY OF OPERATION

Digital Signal Processor (DSP) PCB (continued)

Power Supplies

There are several sets of internal power supply voltage rails. These voltages originate with the main power transformer located in the center of the Input/Output (I/O) PCB. There is also a small keep-alive transformer T5 [I/O PCB schematic, C1] located on the I/O board itself that allows the amplifier to be turned on by SmartSpeaker commands.

The power amplifiers are supplied with both +40 and +20 VDC unregulated rails, as determined by the Class G circuitry. These rails are developed from the transformer secondaries diode bridges B700 and B701 [amplifier schematic sheet 2, A/B 3/4] and their associated capacitor banks.

The digital circuitry on the DSP PCB requires two different regulated voltages, +5V and +3.3V. The +5V regulator U1 [sheet 1, A5] is a standard 3 terminal linear regulator in a surface mount package and is located on the DSP PCB. It’s powered from the +20V rail via fusing resistor R704 [amplifier schematic sheet 2, C6] on the amplifier PCB, and supplies about 120mA to the DSP PCB, most of which is consumed by the microcontroller and codec.

The +3.3V regulator U500 [sheet 4, D4] is a switch-mode regulator and must be located under the shield to avoid EMI problems (harmonics of the 100 kHz switching frequency will stray into the AM broadcast band if left unshielded). This regulator is also powered from the +20V rail and supplies about 350mA to the DSPs.

Operation of the 5V linear regulator is very simple. Current is supplied to the regulator via surface-mount power resistors R10 and R11 [sheet1 A5], which drop the voltage supplied to the regulator to avoid excessive power dissipation. The regulator needs a minimum of about 7V at its input terminal to stay in regulation and it should be able to do this even as the +20V rail sags to +10V or so.

Operation of the +3.3V switch-mode regulator is more complicated. In its simplest terms, the unregulated input is “chopped” at about 100 kHz, and the resulting pulse train is low-pass filtered to extract the DC. This DC output is compared to a +3.3V reference, and the duty cycle of the switching waveform is adjusted accordingly. The high-side switch (the switch that connects +20V to the output filter) is integrated into the controller, while the low-side switch (the switch that connects ground to the output filter) is an external diode D500. When the controller is running, you should be able to observe the switching waveform at L500.

Microcontroller

The microcontroller U202 on the DSP PCB is used for the following housekeeping and control functions:

 to interpret SmartSpeaker commands from the head-end.  to interpret special test mode commands from the functional tester.  to store and retrieve data from nonvolatile memory (U201).  to boot and reprogram the codec (U100) as required by the operating mode of the system.

- to monitor for bass and treble PWM voltage level from U15 on the I/O board.

- DC offset on the amplifier outputs.

- PCB over-temperature.

- presence/absence of a digital S/PDIF signal.

THEORY OF OPERATION

Digital Signal Processor (DSP) PCB (continued)

Microcontroller (continued)

 to sequence the amplifier and codec mute lines as required.  to boot and monitor the performance of the DSPs.  and relay information to/from DSPs.

In detail:

1. SmartSpeaker commands are interpreted by watching for digital activity on the serial data input line (J5, pin 12 [sheet 1, C8]). This serial input can be either the “standard” SmartSpeaker protocol, compatible with the outputs of CD-5, CD-20, etc., or it can be 4800 baud RS232 with 5V logic levels. The microcontroller decides which protocol to use based on the voltage level present on the serial data input at boot time. If the line is low, it assumes RS232; if the line is high, it assumes SmartSpeaker. It checks only once, at boot time, so switching from one protocol to the other requires a power cycle to reboot the system.

2. Test mode commands are special commands to facilitate testing, or to retrieve stored information from the nonvolatile memory. Test mode commands are RS232 only, e.g., the revision of the firmware can be queried by sending the command “tv”, the answer “2200/2000” might come back on the serial data output line. This would indicate version 22.00 for the microcontroller and version 20.00 for the DSPs.

3. The nonvolatile memory is used to store the following information:

 choice of equalization curve.  system, center, and surround volume settings at power-down.  US or Euro bass tone control preference.  system usage statistics.  number of times system was powered off.  minutes spent powered on.

4. The codec U100 [sheet 1, C4] has a fair number of internal registers, all of which must be set up properly for correct operation, e.g., to switch between the ADC inputs and the S/PDIF input (both functions are integrated into the codec), the codec must be reprogrammed. In addition, there are a number of error status bits which are periodically sampled by the microcontroller, the codec can be rebooted if problems are discovered.

5. The tone control potentiometers are not used on the Digital BUILT-INvisible bass and treble are adjusted by means of pulse width modulation as acheived with the I/O board microcontroller and support circuitry. See the I/O board theory of operation for a complete description. The DSP microcontroller has several ADC inputs, two of which are used to detect the voltage used to adjust the bass and treble. Everytime this voltage changes it is presented to the DSPs, which adjust their tone control filter coefficients accordingly.

amplifier. The

THEORY OF OPERATION

Digital Signal Processor (DSP) PCB (continued)

Microcontroller (continued)

6. Other ADC ports are used for the following functions:

• To monitor the gross DC offset on the five satellite speaker channels. Excessive DC offset is

assumed to be an indication of a serious problem and the microcontroller will respond to this by shutting off the power to the amplifier.

• To detect the presence or absence of a digital S/PDIF signal. The codec cannot be set up for

an analog input and a digital S/PDIF input simultaneously and it cannot be reprogrammed from analog to digital (or vice versa) without interrupting the audio signal.

• To sequence the mute line. As with the Series I, there are three so-called “speaker modes”,

2-channel (bass, left, right); 3-channel (bass, left, right and center) and 5-channel (bass, plus all 5 satellites). Unused output channels are muted, not only at the DSP but also at the power amplifier. The mute inputs to the power amplifiers are 5V logic-level outputs from the microcontroller.

• The microcontroller is in charge of booting the DSPs at power-up in the following

sequence:

- Boots the codec and establishes the correct output signals from the codec (bit_clock, frame_clock, and data).

- Enables the 3.3V power supply, and verifies the correct voltage from it.

- Releases the DSP reset line and waits for the DSPs to boot and acknowledge.

The microcontroller is always engaged in dialogue with both DSPs. If the DSPs should fail to respond within a certain time-out, it is assumed that the DSPs have “crashed” and the DSPs are rebooted. The microcontroller must pass some of the nonvolatile information in the EEPROM over to the DSPs at boot time, e.g.: speaker eq, system volume (all volume control in is done in the DSPs), center and surround volume and bass and treble pot position. The microcontroller itself can be reset in two ways, by a hardware reset signal, which is generated by U200 when the 5V supply drops below 4.75V and by the microcontoller itself, once it has already booted successfully (it can pull its own reset line if the 8 MHz clock is running).

Codec

The codec U100 [sheet 1, C4] is a highly integrated device which includes the following functions:

•An I 2 C interface for control and status information.

• Three channels of 20-bit ACD; only two are used, one for the left analog input and one for

the right. The ADCs will input signal levels in excess of 1 Vrms.

• Six channels of output DAC; all six are used. Maximum output signal level is 1 Vrms.

• A crystal oscillator which establishes the ADC/DAC sampling rate, in this case, it is

11.2896 MHz / 256 = 44.1 kHz.

• A S/PDIF receiver. “S/PDIF” stands for Sony/Philips Digital Interface Format. Essentially, for

every pair of 20-bit audio samples, another 24 bits of status, parity-checking and general housekeeping bits are sent along for the ride. The data is encoded in such a way that: a) there is no net DC content to the bit steam, allowing transformer or AC coupling and b) the bit clock can be recovered from the bit steam.

THEORY OF OPERATION

Digital Signal Processor (DSP) PCB (continued)

Codec (continued)

The codec generates three output signals, either from the 11.2896 MHz crystal, or from the input S/PDIF bitstream;

• a serial bit stream containing the 20-bit audio data.

• a bit_clock, which indicates when to sample the serial bit stream.

• and a frame_clock, which indicates the start of an audio sample.

In addition, there is a serial data input (6 20-bit audio samples) to the codec, with timing that corresponds exactly to the timing of the serial data output. These four signals (data out, data in, bit_clock, and frame_clock) are used by the serial ports on the DSPs. The timing of the data flow into and out of the DSP subsystem is driven entirely by the codec; the serial ports on the DSP run asynchronously to the 40 MHz clock which drives the DSPs.

DSPs

The DSPs [DSP1, sheet 3 C/D7; DSP2, A/B7] are Analog Devices 21061L general purpose floating point digital signal processors, each capable of about 40 MIPs of performance. Two are required to provide enough MIPs for:

• AC-3 decoding.

• Videostage®.

• bass management.

• six channels of speaker equalization.

• tone controls.

The DSPs have no internal ROM; at boot time they load themselves from the external PROM U401 [sheet 3, C2]. This boot process is more or less automatic; i.e., no intervention from the microcontroller is required (although the microcontroller has control of the DSP reset line). The 21061L processors are designed to be bussed together, which accounts for the relatively large number of pins found on each DSP (240).

For instance, the signals required to connect the DSPs to each other and to the boot PROM include:

• an external data address buss (32 bits, of which 24 are used).

• an external data buss (48 bits, of which 16 are used).

• buss control signals (buss priority, address and r/w strobes, etc).

Also, there are 30 power and 30 ground pins on each DSP, and a 40 MHz clock oscillator (U400, crystal CR400, and associated components) which drives both processors.

THEORY OF OPERATION

Digital Signal Processor (DSP) PCB (continued)

Signal Path

The signal path through the system takes the following route(s):

For analog signals, the L/R stereo pair is introduced from the source via the input cable from the Input/Output board and the 14-pin connector J9 [schematic sheet 1, A-D8]. Each signal is received pseudo-differentially by op-amp U105 [B/C6] and associated components and -6 dB of gain is applied to match with the maximum in/out signal level of the codec (1Vrms).

Digital S/PDIF input signals enter the DSP board at J9 pin 10 [B8] (which come directly from a S/PDIF signal source selected from one of four possible inputs on the I/O board), the signal is routed directly to the codec U100 [C4] via a network of components (D1 [B5] and surrounding) designed to clamp and filter ESD transients.

The codec takes in either the pair of analog inputs, or the single S/PDIF digital input, and outputs three digital signals (data, bit_clock, and frame_clock, as described earlier). Since the codec runs on 5V and the DSPs run on 3.3V, any signals passing between them must be level-shifted via the buffers U101 [D5] and U102 [D3].

Without going into a lot of detail, DSP1 handles (mostly) Dolby® Digital (AC-3) decoding and Videostage® 5 processing and DSP2 handles (mostly) equalization. With the signal processing complete, DSP2 formats the six output channels into a single serial bitstream and sends this back to the output side of the codec U100. The analog buffers following the codec (U103, U104 and associated components) do three things:

• Remove the 2.3VDC reference voltage from the codec’s outputs. The codec is a

single supply (+5V) device and references any of its internal analog signals to a reference voltage at approximately 2.3V, about one-half the +5V supply voltage.

• Reference the signal to the amplifier ground, not the local ground. The power amps are single

ended and are referenced to their own local ground on the amp PCB, which is not the same as the local ground at the codec on the DSP PCB. Amplifying the differences between the two grounds will produce audible hum in the output speakers.

• Provide enough gain to increase the output signal for output to the amplifier board.

The signals leave the codec itself at about 1Vrms full-scale, this is amplified up to about 6Vrms full-scale by the output buffers.

Power-Up Sequence

At power-up, all of the microcontroller ports are in a high impedance state, which means that:

• The amplifier mute lines are held low, muting the power amps.

• The 3.3V regulated supply is disabled, reducing the demand on the +20V supply until

things have stabilized.

• The DSP reset line is held low, holding the DSPs in reset.

THEORY OF OPERATION

Digital Signal Processor (DSP) PCB (continued)

Power-Up Sequence (continued)

The microcontroller proceeds to:

• Set up its I/O ports.

• Print out a “reset” message on the TTY output.

• Program the codec and verify that it responds.

• Retrieve system variables from nonvolatile memory and print out the “power_cycle” and “eq” variables.

• Boot the DSPs, and wait for them to respond.

• Pass over system variables to the DSPs.

• Print out any appropriate error messages.

• Unmutes the power amplifiers, then unmutes the DSPs.

At this point, normal signal processing commences. It should take no more than 1.5 seconds from the time power is applied until the time audio appears at the speaker outputs.

Power-Down Sequence

Upon receiving the “off” command from the head-end, the microcontroller;

• Mutes the DSPs.

• Mutes the power amplifiers.

• Powers down the codec and the DSPs.

• Stores system variables in EEPROM.

And then monitors the voltage level at the turn-on input. When it sees a low to high transition, it resets itself as if the power had just come on.

Detailed Theory of Operation (see schematic diagram SD256431)

Digital Signal Processor (DSP) Board, Sheet 1 of 4

Sheet 1 of 4 shows the analog input buffers, codec’s power supply, analog output buffers and some “glue logic” around the codec. The analog input buffers consist of op-amp U105 [B/C6] and associated components. The ratio of R102 (and R107) to R100 sets the gain; -6 dB from J9 to the input of the codec. The dual-diodes D100 [D7], D102 [C7], and D104 [B7] are there to clamp ESD discharges into J9. The filter capacitors C100 [D7], C105 [C7], etc., are present to filter off RF picked up by the input cable.

The output signal from the buffer is ground referenced, but the codec’s analog inputs are biased at about 2.3V. C104 [C6] is required to AC-couple the signal from the buffer into the codec. R103 and D103 are present to prevent transients from the op-amp (±12V rails) from overdriving and perhaps damaging the codec (5V rail). R104 and C102 [C6] are an EMI filter to prevent any RF leaking from the codec from getting outside the metal EMI shield. The codec is located under the shield, while the input buffer is not.

THEORY OF OPERATION

Detailed Theory of Operation (see schematic diagram SD256431)

Digital Signal Processor (DSP) Board, Sheet 1 of 4 (continued)

The S/PDIF input enters the DSP board at J9 pin 10 [B8] and is routed to the codec by means of C151, R1, R2, D1, C1, C7 and R5 [B5]. C151 AC couples the digital S/PDIF signal, and R1 terminates the input with 75 Ohms. R2 and D1 clamp the input (a typical S/PDIF input is about 500 mVpp into a 75 Ohm load). C1 AC couples the signal at D1 (which is ground referenced) to the codec input (which will be biased at about 2.3V when the S/PDIF receiver is working). R5 and C7 are an EMI filter designed to prevent RF from leaking outside the shield.

The codec’s power supply consists of U1 [A5] and associated components. R10 and R11 are power resistors designed to drop the voltage at the voltage regulator’s input, for reducing the power dissipation of the voltage regulator itself.

D2, D3, and R4 [A5/6] are used to draw a little current from the +12V regulated supply when the power supplies start to sag severely, as they will at low AC line and heavy amplifier load. The +12V regulator is fed from the +40V unregulated supply and has considerably more headroom than the +5V regulator fed from the +20V supply. Also fed from the +20V supply is the 3.3V switching regulator, which tends to draw more current as its input voltage drops (it delivers a fixed amount of power, at a fixed conversion efficiency). So, as the +20V supply starts to sag, the current load on it actually starts to increase, which tends to make it sag more.

The +5 volts supplied by the regulator is sent to two different components; the codec U100 [C4] and the microcontroller U202 [sheet 2, C5] and associated components. Since the regulator is located outside the EMI shield and the +5V supply line might be carrying EMI (Electro Magnetic Interference), ferrite beads L1 and L2 [A4] were placed in series with each of the supply lines.

L1 and R3 [A4] serve to isolate the two different power supply pins on the codec (the “analog” +5VA from the “digital” +5VD). C5 and C6 are bypass capacitors placed directly under the codec.

Codec glue logic

U101 [D5] is a 74LCX244, a 3.3V IC that can tolerate 5 volts on its inputs. It’s used to convert 5V to 3.3V logic signals.

U102 [D3] is a 74ACT244, a 5V part that understands the logic levels used by the 3.3V IC. It’s used to convert the 3.3V logic signals to 5V logic signals.

U106 [A7] is a flip-flop, used to convert a falling edge (from the codec) to a narrow pulse (to the DSP). This removes a potential timing ambiguity.

R192 [D6] (and others) is a 75 Ohm series resistor used to series-terminate some of the high speed logic signals, to preserve edge fidelity at the receiving end.

R6 and R7 [C3] comprise a low performance 5V to 3.3V shifter. Using such large series resistances in the presence of even moderate amounts of stray and input gate capacitance slows down the signal’s edge, but this particular signal is very low bandwidth.

THEORY OF OPERATION

Detailed Theory of Operation (see schematic diagram SD256431)

Digital Signal Processor (DSP) Board, Sheet 1 of 4 (continued)

Analog output buffers consists of U103, U104 [B-D2], and associated components. Gain is set by the ratio of R132 to R131 [D2]; to about 6x. Note that the ratio of R189 to R188 [D2] must match. Gain of the output buffers = (codec_out - codec_reference) - amp_ground_sense).

Sheet 2 of 4 (microcontroller and associated components)

The bass and treble control signal enters the DSP board at J9 pins 1 and 2 [D8]. This signal is generated on the Input/Output board and connected to a pair of microcontroller ADC inputs at U202 [C5] pins 19 and 20. All of these connections are EMI filtered.

Thermistor R207 [C8] is mounted on the topside of the DSP PCB. When the DSP PCB temperature rises to about 70 degrees C, the microcontroller starts turning down the output volume by programming the codec, effectively controlling the maximum temperature inside the amplifier enclosure and preventing damage.

R211 [D7] connects the signal “CMOUT” to one of the microcontroller’s ADC ports. CMOUT is the codec’s 2.3V reference voltage. This voltage is monitored as one of the codec’s “vital signs”, if out-of-bounds, the microcontroller reboots the codec.

R208 [C8] connects the 3.3V power supply to one of the microcontroller’s ADC ports. The microcontroller has the ability to turn the 3.3V regulator on and off, thus having the ability to check that the 3.3V supply is within limits. The microcontroller needs to be able to turn the 3.3V off at power down to avoid draining the +20V supply faster than the -20V supply. If the upper rails sag faster than the lower rails, the bass amp will unmute causing a “thump” to be heard (about 5 seconds after power down).

R44 throught R48 [I/O schematic sheet, E2] sum together all the satellite outputs and feeds them out through J4-5 [I/O sheet, E4] to DSP J9-5 [A7] to one of the microcontroller’s ADC ports at U202 pin 25. The microcontroller watches for grossly excessive DC offset at any of the speaker outputs. If DC is detected the microcontroller will shut down the AC power.

U201 [B6] is the non-volatile memory. Read/write access is via the 2-wire serial I2C buss.

U200 [D6] generates a 250msec reset pulse for the microcontroller whenever the +5V supply drops below 4.75V.

D200 [A5] forms a simple level translator. The CLIP signal is generated on the amp PCB whenever one of the satellite power amplifiers starts to clip. It’s an open-collector output that pulls down to -12V. D200 level shifts this signal from -12V through +12V, to 0V through 5V. This levelshifted signal goes to both the microcontroller and DSP2 (via a 5V to 3.3V buffer). As it turns out, the microcontroller ignores this signal, but DSP2 turns down the system volume until the CLIP signal disappears, then lets the volume drift back up to the original setpoint.

Q204 and Q201 [B3] form a simple S/PDIF detector. Q204 sets the bias for Q201 such that it is just barely off. An S/PDIF signal arriving at Q201 will cause C216 to be discharged, causing the voltage at C216 to drop from 5V to something closer to ground. This voltage is connected to one of the microcontroller’s ADC ports and is sampled periodically by the microcontroller.

THEORY OF OPERATION

Detailed Theory of Operation (see schematic diagram SD256431)

Digital Signal Processor (DSP) Board, Sheet 2 of 4 (continued)

Q200 [C2] allows the microcontroller to pull down on the DSP’s reset line. When the microcontroller first boots, all of its output ports are set to a high impedance state. Q200 remains turned on by R252, which holds the DSPs in reset, until the microcontroller is ready to boot the DSPs.

R246, R248, [C/D2] etc. connect several of the microcontroller output ports to the MUTE inputs on the power amplifiers. The mute signals are organized into three groups; (bass, left, right), (center) and (left_surround, right_surround), corresponding to the three speaker modes the product supports. Each line is EMI filtered. Pulldown resistors R813, R814 and R815 [amplifier schematic sheet 2, [D5] guarantee that the signals will assume a LOW state i.e., muted) at power-up.

Sheet 3 of 4 (DSPs)

There are only two DSPs, but since they each have 240 pins, they’ve been broken into several different schematic symbols so as not to clutter the page:

- address and data busses.

- buss control, and miscellaneous.

- link ports (sheet 4).

- power and ground (sheet 4).

Without going into any detail, the DSPs are connected to each other and to the boot PROM U401 [C2], as follows:

- address buss connected to address buss.

- data buss connected to data buss.

- buss control signals connected to buss control signals.

- power pins connected to 3.3V power plane.

- ground pins connected to ground plane.

The large number of interconnects and the fact that each signal has extremely fast rise times (2 nsec), required the use of a four layer PCB. One of the inner layers is a (more or less) solid ground plane; the other is used for a power plane, plus additional signal interconnect where required.

U400 [B2] and associated components form a third-overtone 40 MHz oscillator. There are two buffered outputs; one drives both DSPs and one is connected to the test connector J401 [B1], which was used to help debug the prototype PCBs but is no longer loaded.

Sheet 4 of 4

U500 [C/D4] and associated components form a 3.3V regulated supply. C500 and L500 [C5] are the regulator’s output filter. R500 and C501 [D4] set the regulator’s switching frequency (about 100 kHz). C503 [C4] is the “bootstrap” capacitor required for establishing an internal bias voltage higher than the supply voltage (for turning on the internal N-channel MOSFET switch). C515, L501, and C505 [C4] prevent switching harmonics from leaking back out onto the raw DC input voltage. R501, C507, C508 [C3], etc., are feedback and compensation components.

THEORY OF OPERATION

Detailed Theory of Operation (see schematic diagram SD256431)

Digital Signal Processor (DSP) Board, Sheet 4 of 4 (continued)

C506 [D3] is the “soft-start” capacitor, which forces the regulator to start up slowly when power is first applied, thus limiting the inrush current. R510 and Q500 [D3] allow the “soft-start” pin to be pulled low, shutting off the regulator. The 3.3V supply is turned off as part of the normal power down sequence.

Detailed Theory of Operation (see schematic diagram SD256421)

Power Amplifier Board

Note: Unless otherwise noted, refer to the schematic diagrams for the power amplifier board for

the following information. The references in brackets [ ] are the schematic sheet and grid coordinates for the component.

Sheet 1 of 2

The satellite channel power amplifiers are a discrete high efficiency Class-G design. Maximum power is 35 W per channel into 4 Ohms at less than 0.1% THD. In Class-G operation the amplifiers are powered by two different power supplies depending on the amplitude of the signal input. When the audio amplitude is low, the amplifiers run off of the lower supply rails, but during musical peaks they switch to the higher supply rails. Efficiency is typically increased from 20% to 40% and power dissipation is reduced by a factor of 2.5.

Bass Channel Power Amplifier

Audio input is applied to the amplifier PCB at pin 12 of connector J700 [amplifier schematic sheet 2, D7] and is AC coupled through C727 [D8]. The amplifier is controlled by negative feedback to op-amp U707 [C6], which is configured as an inverting amplifier with a voltage gain of 12 (21.6 dB). With no signal applied to the input, all output power devices are biased off. For a negative input signal, pin 1 goes high and conducts driver transistor Q713 [D6]. Collector current is pulled through R707 and R774 [D6] until the voltage drop across R774 reaches about 1 Volt, at which time the high gain darlington transistor Q718 [D6] begins to conduct emitter current through power diode D711 [D5/6], which connects to the +20VDC supply.

Collector current from Q718 [D6] flows through the speaker load and the voltage at this node is regulated by feedback to the op-amp via resistor R789 [D7].

When the audio output voltage approaches the 20VDC power supply rail, output transistor Q718 begins to saturate and conducts much more base current than the normal maximum of 5mA. At approximately 8mA the voltage drop across 75 Ohm resistor R707 [D6] exceeds 0.6V and small signal transistor Q714 [D6] begins to conduct. This in turn conducts Class-G Darlington transistor Q715 [D6], which turns on the 40VDC power supply and reverse biases power diode D711 [D6], effectively turning off the 20VDC supply. During this period, the waveform at the collector of Q715 resembles the audio output signal plus the saturation drop of Q718 and Q715 is operated in the active region (not as a switch), thus sharing the power dissipation.

Crossover distortion and switching transients are not an issue due to the relatively low bandwidth of the amplifier (less than 250 Hz) and the ability of the bass module to roll off high frequency distortion products. Crossover distortion is less than 0.5% at 200 Hz, 1 Watt.

THEORY OF OPERATION

Detailed Theory of Operation (see schematic diagram SD256421)

Power Amplifier Board, Bass Channel Power Amplifier (continued)

Short circuit protection is provided through current sense resistor R822. At greater than 16A, Q726 conducts and triggers the one-shot op-amp circuit U707, pins 5, 6 and 7, and mutes the amp for several seconds. The amp will cycle in and out of mute until the short circuit is removed.

Satellite Power Amplifiers

Each of the five satellite amplifiers are operated in Class-G configuration and consist of a 50W, Class AB monolithic integrated circuit (in a multiwatt-15 package, TDA7294). The amplifier is short circuit and thermally protected. External to this IC is a pair of TO-220 Darlington transistors (the same as used in the discrete bass amplifier) to perform the Class-G power supply switching. The following detailed operation is described for the left surround channel, however the other four channels would be the same.

The surround signal enters the amplifier board at J700 pin 11 [sheet 2, D7] and is applied to capacitor C717 [C5] and couples to the non-inverting input of the TDA7294 amplifier IC. It is configured as a non-inverting amplifier with a voltage gain of 4 (12 dB). The output stage consists of a pair of MOSFET transistors and the positive FET must develop gate drive well above the supply voltage and hence there is a bootstrap cap, C716 [C3], between pin 6 and 14.

With low amplitude signal, the amplifier runs off of the 20VDC rails through power diodes D704 [D3] and D710 [C3]. The power supply voltage at pin 13 is subtracted by 5.6V zener diode D703 [D3] and divided down by the ratio of 1 + R731/R732 [D3/4]. This bias voltage sets the threshold at which transistor Q703 [D4] turns on. When the audio or the input to the amplifier exceeds the voltage at the emitter of Q703 by two diode drops, D716 [C4] and Q703 conduct. In turn this conducts small signal transistor Q704 [D4] which in turn conducts output transistor Q705 [D3]. A negative feedback loop is established that prevents Q705 from turning completely on and the voltage at the collector of Q705 resembles the audio output wave form plus several volts of saturation headroom. Q705 operating in the active region (instead of as an on/off switch), results in shared power dissipation between the transistor and the power amplifier IC. The phase lag created by the input network R753 and C745 [C4] allows the power circuit to switch on slightly ahead of the power amplifier at high frequencies (above 8 kHz) to minimize turn-on glitch.

Power Amplifier Board, Sheet 2 of 2

Power Supplies and Connectors

AC power is sent to the amplifier board at J702 [A/B5] from the secondary of the power transformer [I/O schematic sheet, D1] located in the center cutout of the Input/Output board. The raw AC is recitified by bridge rectifiers B700 and B701 [A/B4]. The filtered DC from B701 is passed through fusible resistors R713 and R714 [B3] and output as +40V fused. These 40V rails are used as the higher rail voltage for the Class G amplifier output devices as shown on amplifier schematic sheet 1. The +40Vdc fused outputs are also are regulated down to +12Vdc by regulators U708 and U709 [B/C2]. This +12Vdc is fed to both the DSP board through J700 pins 2 and 6 and to the Input/Output board at J701 pins 13 and 15 [A7]. The filtered DC from B700 provides +20Vdc and is used as the lower rail voltage for the amplifier Class G output devices.

THEORY OF OPERATION

Power Amplifier Board, Sheet 2 of 2 (continued)

Outputs to the DSP board from the amplifier board at J700 also include the +20Vdc at pin 4 through fusible resistor R704 [C6] to create +20 fused. The mute and standby signals for the power amplifiers are brought into the amplifier board at J700 on pins 15, 16 and 18.

The audio inputs to the power amplifier board are applied at J700 [C/D7] pins 8-12 and 14 via a cable running from J8 of the DSP board. These inputs are then applied to the inputs of the individual amplifier channels as shown on amplifier schematic sheet 1.

The outputs of all six of the amplifier channels are brought out of the amplifier board at J701 pins 2, 3, 4, 6, 8 and 10. These outputs are fed back to the Input/Output board at J22 by a cable. The bass channel output is also monitored and output to the Input/Output board as the PROTECT signal at J701 pin 11. This PROTECT signal is applied to the Input/Output board at J22 pin 11 [Input/Output board schematic, D2]. It is passed to a window comparitor made up of transistors Q1 and Q2. The output of this comparitor is the signal BUF_PROTECT. This signal is sent to the microcontroller U5 [C4] at pin 3. In the event of a failure, this BUF_PROTECT signal will cause the microcontroller to send out a shutdown command on the Amp_Power pin 11 of the microcontroller to shut down power to the amplifier.

DISASSEMBLY/ASSEMBLY PROCEDURES

Note: Refer to figures 1, 2 and 3 for the following procedures.

1. Heatsink Removal

1.1 Using a Phillips-head screwdriver,

remove the four screws (20) that secure the heatsink (16) to the chassis (8).

1.2 Lift the heatsink straight up just far

enough to be able to reach the amplifier board (9 & 10) cables. Disconnect these two cables. The amplifier board is mounted to the underside of the heatsink. Lift the heatsink clear of the chassis.

2. Heatsink Replacement

2.1 Align the heatsink (16) with the chassis

base (8). Reconnect the two cables removed in step 1.2. Slide the heatsink down over the chassis until it is flush with the chassis end plates.

3. Input/Output Board Removal

3.1 Perform procedure 1.

3.2 Disconnect the two cables that run to the

power transformer (4).

3.3 Using a nut driver, remove the one hex head bolt (2) that secures the power transformer to the chassis (8). Lift the power transformer out of the chassis. Lift the power transformer gasket out of the chassis.

3.4 Using a Phillips-head screwdriver, remove the four screws (1) that secure the input/output board (6) to the chassis. Lift the input/output board straight out of the chassis.

4. Input/Output Board Replacement

4.1 Align the input/output board (6) with the

chassis (8) and secure it in place using the four screws (1) removed in step 3.4.

2.2 Secure the heatsink to the chassis using

the four screws (20) removed in step 1.1.

4.2 Place the power transformer gasket into the chassis.

DISASSEMBLY/ASSEMBLY PROCEDURES

4.3 Align the power transformer (4) with the chassis and secure it in place using the hex head bolt (2) removed in step 3.3.

4.4 Perform procedure 2.

5. DSP Board Removal

5.1 Perform procedure 1.

5.2 Disconnect the cable that runs from the

Input/Output board (6) to the DSP board (5). Disconnect the cable that runs from the amplifier board (14) to the DSP board.

5.3 Using a Phillips-head screwdriver, remove the four screws (1) that secure the DSP board to the chassis (8). Lift the DSP board out of the chassis.

6. DSP Board Replacement

8. Amplifier Board Replacement

8.1 Place the thermal conducting insulating

tape strips (15) onto the heatsink (16) where the amplifier board (14) output devices will be located.

8.2 Align the amplifier board with the heatsink and secure it in place using the two standoffs (13) removed in step 7.3.

8.3 Align the tension clamp (12) with the amplifier board and secure it in place using the two screws (11) removed in step 7.2.

8.4 Perform procedure 2.

6.1 Align the DSP board (5) with the

chassis (8) and secure it in place using the four screws (1) removed in step 5.3.

6.2 Connect the cable that runs from the DSP board to the input/output board (6). Connect the cable that runs from the DSP board to the amplifier board (14).

6.3 Perform procedure 2.

7. Amplifier Board Removal

7.1 Perform procedure 1.

7.2 Using a Phillips-head screwdriver,

remove the two screws (11) that secure the tension clamp (12) to the amplifier board (14). Lift the tension clamp off of the amplifier board.

7.3 Using a nut driver, remove the two standoffs (13) that secure the amplifier board to the heatsink. Lift the amplifier board out of the heatsink (16).

TEST PROCEDURES

Test Setup

Note: The commands used in the following

tests can either be issued by an IR remote control or PC generated (using hyperterminal) through the RS-232 (TAP) interface at J9. Refer to the IR commands table in the appendix of this manual. There is a built-in remote receiver located on the Input/Output PCB behind the IR sensor input connector (J10). If you aim the IR remote at this connector, the IR command will be received by IR sensor U11. Refer to the Input/Output PCB schematic sheet for more information.

The following test procedures use TAP commands issued by an IBM compatible PC. The TAP commands are used to emulate commands that would normally be sent by an IR remote control, with the exception of the max volume command (S31101), which is a Lifestyle® Smart Speaker command. To set the amplifier to full volume using an IR remote, hold the volume up button for 10 seconds.

Setup instructions for the PC and fabrication instructions for the TAP cable are located in the appendix.

Equipment Required:

Audio Signal Generator S/PDIF Analog to Digital Converter CAT-5 Cable with RJ-45 connectors 75 Ohm RCA to RCA S/PDIF video cable Bose® Digital Source plate IBM Compatible PC w/Windows TAP Cable Digital Multimeter Audio Distortion Analyzer 5 - 8 Ohm, 50 Watt load resistors 1 - 4 Ohm, 150 Watt load resistor

Note: Refer to figures 7 and 8 for the following test setup information.

1. Connect the signal generator inputs to the left and right Music Audio inputs at J6 pins 1, 2, 4 and 5.

2. Place the balanced/unbalanced switches (S1) to the unbalanced (single-ended) position. Use a piece of wire to jumper the negative inputs (J6 pins 2 and 5) to ground at J6 pin 3.

3. Connect the TAP cable to the amplifiier at the RS-232 Serial Data Input jack at J9. Connect the other end to the IBM compat ible PC comm port. TAP cable fabrication and IBM PC setup are outlined in the appendix of this manual.

4. Connect an 8 Ohm load resistor to the satellite speaker channels at J12, J13 and J14. Connect the 4 Ohm load resistor to the bass channel speaker output at J15.

5. Set the speaker selector DIP switch (S4) position 1 to the UP position. Set positions 2, 3 and 4 to the DOWN position. Cycle the AC mains power to allow this change to go into effect. This will select the Jewel Cube® satellite EQ for the following tests.

6. Issue the following commands to the amplifier under test via hyperterminal. These commands will put the TA-1 ampli fier into the proper mode for testing.

Note: These commands are case sensitive.

- ICA (selects music audio inputs)

- I78 (DRC off)

- IF4 (film EQ off)

- IA0 (1-to-5 off)

- IDA (bass boost to mid)

- IB2 (treble boost to mid)

- ID0 (surround mode)

- IF7 (center channel level to mid)

- IF9 (surround channel level to mid)

- S31101 (sets amplifier volume to max)

TEST PROCEDURES

Music Audio Tests

1. Front Channel Audio Tests

1.1 Set up the amplifier under test as outlined

in the test setup.

1.2 Apply a 100 mV, 1 kHz signal to the left music audio input at J6 pins 1 and 2.

1.3 Reference a dB meter to the input level.

1.4 Measure the output level at the left front

speaker output at J12 pins 3 and 4. It should be +34.6 dB + 1.5 dB.

1.5 Apply a 100 mV, 200 Hz signal to the left music audio input at J6 pins 1 and 2.

1.6 Reference a dB meter to the input level.

1.7 Measure the output level at the left front

speaker output at J12 pins 3 and 4. It should be +37.1 dB + 1.5 dB.

1.8 Apply a 100 mV, 12 kHz signal to the left music audio input at J6 pins 1 and 2.

1.15 Apply a 1.8 Vrms, 1 kHz signal to the left music audio input at J6 pins 1 and 2.

1.16 Measure the compressor signal distortion level at the left front speaker output at J12 pins 3 and 4. It should be < 2.0% THD+N.

1.17 Repeat steps 1.2 to 1.16 for the right music audio input, applying the signal at J6 pins 4 and 5 and measuring the output at the right front speaker output at J12 pins 1 and 2.

2. Center Channel Audio Tests

2.1 Set up the amplifier under test as out-

lined in the test setup.

2.2 Apply an in-phase, 100 mV, 1 kHz signal to the left and right music audio inputs at J6.

2.3 Reference a dB meter to the input level.

2.4 Measure the output level at the center

channel speaker output at J13 pins 1 and 2. It should be +33.7 dB + 1.5 dB.

1.9 Reference a dB meter to the input level.

1.10 Measure the output level at the left front

speaker output at J12 pins 3 and 4. It should be +39.0 dB + 1.5 dB.

1.11 Apply a 50 mV, 1 kHz signal to the left music audio input at J6 pins 1 and 2.

1.12 Measure the small signal distortion level at the left front speaker output at J12 pins 3 and 4. It should be < 0.5% THD+N.

1.13 Apply a 600 mV, 1 kHz signal to the left music audio input at J6 pins 1 and 2.

1.14 Measure the large signal distortion level at the left front speaker output at J12 pins 3 and 4. It should be < 0.2% THD+N.

2.5 Apply an in-phase, 100 mV, 200 Hz signal to the left and right music audio inputs at J6.

2.6 Reference a dB meter to the input level.

2.7 Measure the output level at the center

channel speaker output at J13 pins 1 and 2. It should be +37.7 dB + 1.5 dB.

2.8 Apply an in-phase, 100 mV, 12 kHz signal to the left and right music audio inputs at J6.

2.9 Reference a dB meter to the input level.

2.10 Measure the output level at the center

channel speaker output at J13 pins 1 and 2. It should be +39.8 dB + 1.5 dB.

TEST PROCEDURES

2.11 Apply an in-phase, 50 mV, 1 kHz signal

to the left and right music audio inputs at J6.

2.12 Measure the small signal distortion

level at the center channel speaker output at J13 pins 1 and 2. It should be < 0.5% THD+N.

2.13 Apply an in-phase, 600 mV, 1 kHz

signal to the left and right music audio inputs at J6.

2.14 Measure the large signal distortion

level at the center channel speaker output at J13 pins 1 and 2. It should be < 0.2% THD+N.

2.15 Apply an in-phase, 1.8 Vrms, 1 kHz

signal to the left and right music audio inputs at J6.

2.16 Measure the compressor signal distor-

tion level at the center channel speaker output at J13 pins 1 and 2. It should be < 2.0% THD+N.

3. Surround Channel Audio Tests

3.1 Set up the amplifier under test as out-

lined in the test setup.

3.2 Apply a L= -R, 100 mV, 1 kHz signal to

the left and right music audio inputs at J6. You can do this by inverting the phase of the right channel input signal from the signal generator.

3.7 Measure the output level at the left and right surround channel speaker outputs at J14. It should be +36.9 dB + 1.5 dB.

3.8 Apply a L= -R, 100 mV, 12 kHz signal to the left and right music audio inputs at J6.

3.9 Reference a dB meter to the input level.

3.10 Measure the output level at the left and

right surround channel speaker outputs at J14. It should be +39.2 dB + 1.5 dB.

3.11 Apply a L= -R, 50 mV, 1 kHz signal to the left and right music audio inputs at J6.

3.12 Measure the small signal distortion level at the left and right surround channel speaker outputs at J14. It should be < 0.5% THD+N.

3.13 Apply a L= -R, 600 mV, 1 kHz signal to the left and right music audio inputs at J6.

3.14 Measure the large signal distortion level at the left and right surround channel speaker output at J14. It should be < 0.2% THD+N.

3.15 Apply a L= -R, 1.8 Vrms, 1 kHz signal to the left and right music audio inputs at J6.

3.16 Measure the compressor signal distortion level at the left and right surround channel speaker output at J14. It should be < 2.0% THD+N.

3.3 Reference a dB meter to the input level.

3.4 Measure the output level at the left and

right surround channel speaker outputs at J14. It should be +34.5 dB + 1.5 dB.

3.5 Apply a L= -R, 100 mV, 200 Hz signal to

the left and right music audio inputs at J6.

3.6 Reference a dB meter to the input level.

4. Bass Channel Audio Tests

4.1 Set up the amplifier under test as out-

lined in the test setup.

4.2 Apply an in-phase, 100 mV, 100 Hz signal to the left and right music audio inputs at J6.

4.3 Reference a dB meter to the input level.

TEST PROCEDURES

4.4 Measure the output level at the bass channel speaker output at J15 pins 1 and 2. It should be +38.4 dB + 1.5 dB.

4.5 Apply an in-phase, 100 mV, 20 Hz signal to the left and right music audio inputs at J6.

4.6 Reference a dB meter to the input level.

4.7 Measure the output level at the bass

channel speaker output at J15 pins 1 and 2. It should be +19.1 dB + 1.5 dB.

4.8 Apply an in-phase, 100 mV, 200 Hz signal to the left and right music audio inputs at J6.

4.9 Reference a dB meter to the input level.

4.10 Measure the output level at the bass

channel speaker output at J15 pins 1 and 2. It should be +29.9 dB + 1.5 dB.

4.16 Measure the compressor signal distortion level at the bass channel speaker output at J15 pins 1 and 2. It should be < 4.0% THD+N.

5. DC Offset Test

5.1 Set up the amplifier under test as out-

lined in the test setup.

5.2 With no input signal applied, measure the DC offset level at the front, center, surround and bass channel speaker outputs at J12, J13, J14 and J15. It should be < 10 mVdc.

6. Output Noise Test

6.1 Set up the amplifier under test as out-

lined in the test setup.

6.2 Short out the left and right music audio inputs at J6.

4.11 Apply an in-phase, 50 mV, 100 Hz signal to the left and right music audio inputs at J6.

4.12 Measure the small signal distortion level at the bass channel speaker output at J15 pins 1 and 2. It should be < 0.5% THD+N.

4.13 Apply an in-phase, 230 mV, 100 Hz signal to the left and right music audio inputs at J6.

4.14 Measure the large signal distortion level at the bass channel speaker output at J15 pins 1 and 2. It should be < 0.2% THD+N.

4.15 Apply an in-phase, 600 mV, 100 Hz signal to the left and right music audio inputs at J6.

6.3 Measure the A-weighted output noise level at the left and right front and center channel speaker outputs. It should be < 3.0 mVrms.

6.4 Measure the A-weighted output noise level at the surround channel speaker outputs. It should be < 330 uVrms.

6.5 Measure the A-weighted output noise level at the bass channel speaker output. It should be < 1.0 mVrms.

TEST PROCEDURES

Video Audio Tests

Note: The following tests are a subset of the

tests performed for the Music Audio tests. The purpose of these tests is to ensure that the I/O board multiplexer IC U3 has properly switched the audio to the video audio input and that the differential amplifiers have the proper gain and bandwidth.

7. Front Channel Audio Tests

7.1 Set up the amplifier under test as out-

lined in the test setup.

7.2 Connect the signal generator inputs to

the left and right video audio inputs at J21 pins 1, 2, 4 and 5.

7.3 Issue a TV ON command (IF5). This will

cause the amplifier to change to the video audio inputs.

7.13 Repeat steps 7.2 to 7.12 for the right channel, applying the input signal at J21 pins 4 and 5 and measuring the output at the right front speaker output at J12 pins 1 and 2.

8. Digital Audio (S/PDIF) Input Tests

Test Setup:

- Connect the audio signal generator to the input of the A/D converter.

- Using the 75 Ohm video cable, connect the output of the A/D converter to the Digital Source 1 connector on the Digital Source plate (see below).

- Connect the CAT-5 cable from the rear of the Digital Source plate to the S/PDIF input at J7 of the TA-1 amplifier.

7.4 Apply a 100 mV, 1 kHz signal to the left

video audio input at J21 pins 1 and 2.

7.5 Reference a dB meter to the input level.

7.6 Measure the output level at the left front

speaker output at J12 pins 3 and 4. It should be +34.6 dB + 1.5 dB.

7.7 Apply a 100 mV, 200 Hz signal to the left

video audio input at J21 pins 1 and 2.

7.8 Reference a dB meter to the input level.

7.9 Measure the output level at the left front

speaker output at J12 pins 3 and 4. It should be +37.1 dB + 1.5 dB.

7.10 Apply a 100 mV, 12 kHz signal to the

left video audio input at J21 pins 1 and 2.

7.11 Reference a dB meter to the input level.

IR Sensor input jack

BOSE

S/PDIF digital input jacks

8.1 Issue a source select VIDEO 1 command (I88) to select S/PDIF input 1 on the TA-1 amplifier. Set the TA-1 amplifier to full volume (issue a SmartSpeaker full volume command [S31101] in hyperterminal, or hold down the IR remote VOLUME UP button for 10 seconds).

7.12 Measure the output level at the left front

speaker output at J12 pins 3 and 4. It should be +39.0 dB + 1.5 dB.

8.2 Apply a 100 mVrms, 1 kHz S/PDIF encoded mono signal from the A/D converter.

TEST PROCEDURES

8.3 Verify that the TA-1 center channel output at J13 pins 1 and 2 is +33.7 dB + 1.5 dB.

8.4 Move the output of the A/D converter to the Digital Source 2 input of the Digital Source plate. Issue the VIDEO 2 source select command (I48) to select S/PDIF input 2 on the TA-1 amplifier.

8.5 Apply a 100 mVrms, 1 kHz S/PDIF encoded mono signal from the A/D converter.

8.6 Verify that the TA-1 center channel output at J13 pins 1 and 2 is +33.7 dB + 1.5 dB.

8.7 Move the output of the A/D converter to the Digital Source 3 input of the Digital Source plate. Issue the AUX source select command (IC8) to select S/PDIF input 3 on the TA-1 amplifier.

10. Relay K1 Test

Note: Music Center Input pins 1 and 2 of J8

(normally used for the 10 Vdc turn-on and serial data input from the music center) can also be used for RS-232 Tx (transmit) and Rx (receive) respectively. These tests will check proper operation of relay K1 which performs this switching. Refer to the Input/ Output board schematic diagram for more information.

Test Setup:

- Connect the TAP cable to the serial data COM port on the rear of the computer.

- Connect the other end of the TAP cable to J8 pins 1 and 2. Pin 1 is used for Rx (re ceive) and pin 2 is used for Tx (transmit).

- Set up the serial data COM port as shown in the Appendix (4800 baud, 8 data bits, no parity, 1 stop bit [8N1]).

8.8 Apply a 100 mVrms, 1 kHz S/PDIF encoded mono signal from the A/D converter.

8.9 Verify that the TA-1 center channel output at J13 pins 1 and 2 is +33.7 dB + 1.5 dB.

8.10 Move the output of the A/D converter to the Digital Source 4 input of the Digital Source plate. Issue the TAPE source select command (I28) to select S/PDIF input 4 on the TA-1 amplifier.

8.11 Apply a 100 mVrms, 1 kHz S/PDIF encoded mono signal from the A/D converter.

8.12 Verify that the TA-1 center channel output at J13 pins 1 and 2 is +33.7 dB + 1.5 dB.

9. TV Sensor Test

9.1 With the TA-1 amplifier OFF, momentarily

apply +5 Vdc to the TV Sense ON input at J11-1. The TA-1 amplifier should power up. You can obtain the needed +5 Vdc level at J10 pin 4.

10.1 Connect a jumper wire from J10 pin 4 (+5 Vdc) to J8 pin 3 (ANT/DTR). This will activate relay K1.

10.2 On the PC, open a Hyperterm window and connect to the TA-1 amplifier. In the Hyperterm window, click on CALL, then CONNECT. You should hear 3 beeps indicating the the PC is connected to the TA-1 amplifier.

10.3 Click in the Hyperterm window. On the PC keyboard, enter the following command.

Ben

This will enable you to communicate directly with the DSP board. Next enter:

ef ff

Your command will not echo on the computer screen. Within 2 seconds you should see the following response in the Hyperterm window.

Press CTRL-S on the keyboard to return to normal communications mode.

TEST PROCEDURES

11. DSP Board Tests

Note: These tests will verify that the DSP

board is working properly.

Note: If you are performing these tests using a Digital BUILT-INvisible® IR remote, you will not be able to perform tests 11.24 (1:5 Toggle), 11.27 (DRC Toggle) or 11.30 (FEQ Toggle) as these functions are not incorporated into the remote control. In order to perform these tests you need to use either a programmable remote such as the Philips Pronto, or TAP commands to emulate the IR commands as listed in the procedures.

Note: The TA-1 uses 1.5 dB gain steps between 0 and 9 dB and 1 dB steps between 0 and -6 dB.

11.1 Setup the unit under test as listed in the

Test Setup Parameters. Connect the TA-1 amplifier to an IBM compatible PC using the TAP cable described in the appendix. Set up a hyperterminal session as listed in the appendix.

11.2 Set the TA-1 amplifier bass and treble

controls to the center position using the TAP commands IDA and IB2.

11.3 Enter the following TAP commands and

check the TA-1 amplifier for the correct response from the TA-1 amplifier.

11.4 Apply a 100 mV, 1 kHz signal to the left

and right music audio inputs at J6.

11.5 Reference a dB meter to the left front

satellite speaker output at J12 pins 3 and 4.

11.6 On the IBM PC, issue one VOLUME

UP command (IC0). Confirm that the output volume level has been raised 1 dB.

11.7 Issue one VOLUME DOWN command

(I40). Confirm that the output volume level has decreased 1 dB.

11.8 Issue one 5 SPEAKER mode command (I38). Confirm that the TA-1 amplifier is now in 5 channel mode.

11.9 Issue one SURROUND UP command (ID0). Confirm that the surround volume has been raised either 1 or 1.5 dB.

11.10 Issue one SURROUND DOWN command (I50). Confirm that the surround volume has decreased either 1 or 1.5 dB.

11.12 Issue one 3 SPEAKER mode command (IF2). Confirm that the unit is now in 3 channel mode.

11.13 Issue one CENTER UP command (I90). Confirm that the center volume has been raised either 1 or 1.5 dB.

11.14 Issue one CENTER DOWN command (I10). Confirm that the center volume has decreased either 1 or 1.5 dB.

11.15 Issue one STEREO command (ID2). Confirm that the unit is now in 2 channel (stereo) mode.

11.16 Issue one BASS UP command (I7A). Confirm that the bass volume has increased one increment.

11.17 Issue one BASS DOWN command (IFA). Confirm that the bass volume has decreased one increment.

11.18 Issue one BASS MIDDLE command (IDA). Confirm that the bass volume is in the center of the range.

11.19 Issue one TREBLE UP command (I0A). Confirm that the treble volume has increased one increment.

11.20 Issue one TREBLE DOWN command (I8A). Confirm that the treble volume has decreased one increment.

11.21 Issue one TREBLE MIDDLE command (IB2). Confirm that the treble volume is in the center of the range.

TEST PROCEDURES

11.22 Issue one 1:5 ON mode command (I20). Confirm that the 1:5 processing is on.

11.23 Issue one 1:5 OFF mode command (IA0). Confirm that the 1:5 processing is off.

11.24 Issue one 1:5 TOGGLE command (I68). Confirm that the 1:5 processing is toggled.

11.25 Issue one DRC ON command (I9A). Confirm that the Dynamic Range Compression is on.

11.26 Issue one DRC OFF command (I78). Confirm that the DRC is off.

11.27 Issue one DRC TOGGLE command (IE8). Confirm that the DRC is toggled.

11.28 Issue one FEQ ON command (IF3). Confirm that the Film EQ is on.

13.34 Issue one VIDEO 1 mode command (I70). Confirm that the FEQ and DRC are on.

13.35 Issue one VIDEO 2 mode command (IB0). Confirm that the FEQ and DRC are on.

13.36 Issue one AUX mode command (IF0) with an analog signal present. Confirm that the FEQ and DRC are off.

13.37 Issue one AUX mode command (IF0) with an AC-3 signal present. Confirm that the FEQ and DRC are on.

13.38 Issue one TAPE mode command (I4A). Confirm that the FEQ and DRC are off.

13.39 Issue one AM/FM command (I60). Confirm that the FEQ and DRC are off.

13.40 Issue one CD mode command (ICA). Confirm that the FEQ and DRC are off.

11.29 Issue one FEQ OFF command (IF4). Confirm that the FEQ is off.

11.30 Issue one FEQ TOGGLE command (I5A). Confirm that the FEQ is toggled. You must be in Video 1, Video 2, Aux or Tape to do this.

11.31 Issue one MUTE command (I80). Confirm that the unit mutes.

11.32 Issue one VOLUME UP command (IC0). Confirm that from the mute state, the volume up command will unmute the amplifier and increase the volume.

Note: The following tests will check the default behavior of the FEQ and DRC functions by verifying that both features are on when a source change to VIDEO is performed and off when a source change to CD or AM/FM is performed. Perform these steps with the TA-1 amplifier EXT DIP switch in the down position.

13.41 With the amplifier still in CD mode, confirm that the FEQ state cannot be changed by issuing one FEQ ON command (IF3). Switch to AM/FM mode by issuing one AM/FM mode command (I60) and confirm that the FEQ state cannot be changed.

13.42 Switch to VIDEO 1 by issuing one VIDEO 1 mode command (I70). Confirm that the FEQ state can be changed in this mode. Repeat this step with VIDEO 2 (IB0), AUX (IF0) and TAPE (I4A) modes as well.

13.33 Turn the TA-1 amplifier on by issuing one CD mode command (ICA). Confirm that the FEQ and DRC are off.

PART LIST NOTES

1. This part is not normally available from Customer Service. Approval from the Field Service

Manager is required before ordering.

2. The individual parts located on the PCBs are listed in the Electrical Part List.

3. This part is critical for safety purposes. Failure to use a substitute replacement with the

same safety characteristics as the recommended replacement part might create shock, fire and/or other hazards.

MAIN PART LIST

Digital BUILT-INvisible® Amplifier (see Figures 1, 2 and 3)

Item

Number

1 SCREW, MACH, PH, X-REC, 8-32, .4375 256439-07 9 2 SCREW, MACH, PH, X-REC, 10-32, 1.75L 189265-028 1 3 WASHER, AN970-3, OD=.875, ID=.203, T=.062 256436 1 4 XFMR, TOROID, 120V, 60Hz 256454 1 3

5 PCB ASSY, DSP 256432 1 6 PCB ASSY, INPUT/OUTPUT 256442 1 7 SCREW, MACH, FH, X-REC, BLACK, 4-40, .375 256438-06 1 8 CHASSIS, BACKPLATE, DBIS 256452 1

9 CABLE ASSY, J701 AMP TO J22 I/O, 15 WIRE 256461 1 10 CABLE ASSY, J700 AMP TO J8 DSP, 18 WIRE 256463 1 11 SCREW, MACH, PH, X-REC, 8-32,.375 256439-06 2 12 CLAMP, TENSION, HEATSINK 256455 1 13 STANDOFF, .375 HEX, .375 HIGH, M-F, 8-32 256456-06 2 14 PCB ASSY, AMPLIFIER 256422 1 15 TAPE, INSUL, THERM COND, 6.625 L X1.0 W X

.010 T, T500 16 HEATSINK, ENCLOSURE 256453 1 17 PLUG, LOCKING, 180D, .200, P0S=3,

SERIAL I/O, TV SENSE 18 PLUG, LOCKING, 180D, .200, P0S=4,

MUS CNTR IN, FRONT OUT, SURR OUT 19 PLUG, LOCKING, 180D, .200, P0S=5,

MUS AUD IN, VID AUD IN, IR IN 20 SCREW, MACH, FH, X-REC, BLACK, M4X12 256437-12 4 21 PAD, SUPPORT, FOAM 256440 1 22 PLUG, LOCKING, 180D, .200, P0S=2,

CENTER, BASS OUTPUT

Description Part Number Qty Note

256457 2 3

172930-3 2

172930-4 3

172930-5 3

172930-2 2

Note: This cable is soldered directly to the I/O PCB.

Figure 1. Input/Output PCB, DSP PCB and Chassis Exploded View

Figure 2. Amplifier PCB Assembly with Heatsink Exploded View

202x

17 2x

18 2x

22 2x

Figure 3. Assembled Amplifier with Heatsink Open

20 2x

I/O PCB ELECTRICAL PART LIST

Resistors

Reference

Designator

RN1 5K, RESNET, SOIC 16, 1/10W, 1% 250124-5001 RN2 5K, RESNET, SOIC 16, 1/10W, 1% 250124-5001 RN3 5K, RESNET, SOIC 16, 1/10W, 1% 250124-5001 RN4 5K, RESNET, SOIC 16, 1/10W, 1% 250124-5001 R1 4.99K, 0805, 1/10W, 1% 133625-4991 R2 2K, 0805, 1/10W, 1% 133625-2001 R3 470 OHM, 0805, 1/10W, 1% 133625-4700 R4 470 OHM, 0805, 1/10W, 1% 133625-4700 R8 4.99K, 0805, 1/10W, 1% 133625-4991 R9 100K, SM, 0805, 1/10W, 1% 133625-1003 R10 100 OHM, 0805, 1/10W, 1% 133625-1000 R11 47K, 0805, 1/10W, 1% 133625-4702 R12 47K, 0805, 1/10W, 1% 133625-4702 R13 47K, 0805, 1/10W, 1% 133625-4702 R14 10K, 0805, 1/10W, 1% 133625-1002 R15 20K, 0805, 1/10W, 1% 133625-2002 R16 20K, 0805, 1/10W, 1% 133625-2002 R17 2K, 0805, 1/10W, 1% 133625-2001 R18 2K, 0805, 1/10W, 1% 133625-2001 R19 2K, 0805, 1/10W, 1% 133625-2001 R20 4.99K, 0805, 1/10W, 1% 133625-4991 R21 2K, 0805, 1/10W, 1% 133625-2001 R22 2K, 0805, 1/10W, 1% 133625-2001 R23 2K, 0805, 1/10W, 1% 133625-2001 R24 2K, 0805, 1/10W, 1% 133625-2001 R25 75 OHM, 0805, 1/10W, 1% 133625-75R0 R26 2K, 0805, 1/10W, 1% 133625-2001 R27 2K, 0805, 1/10W, 1% 133625-2001 R28 75 OHM, 0805, 1/10W, 1% 133625-75R0 R29 4.75K, 0805, 1/10W, 1% 133625-4751 R30 4.75K, 0805, 1/10W, 1% 133625-4751 R31 4.75K, 0805, 1/10W, 1% 133625-4751 R32 4.75K, 0805, 1/10W, 1% 133625-4751 R33 4.75K, 0805, 1/10W, 1% 133625-4751 R34 4.75K, 0805, 1/10W, 1% 133625-4751 R35 4.75K, 0805, 1/10W, 1% 133625-4751 R36 4.75K, 0805, 1/10W, 1% 133625-4751 R37 75 OHM, 0805, 1/10W, 1% 133625-75R0 R38 4.99K, 0805, 1/10W, 1% 133625-4991 R39 75 OHM, 0805, 1/10W, 1% 133625-75R0 R40 10K, 0805, 1/10W, 1% 133625-1002 R44 200K, 0805, 1/10W, 1% 133625-2003 R45 200K, 0805, 1/10W, 1% 133625-2003 R46 200K, 0805, 1/10W, 1% 133625-2003 R47 200K, 0805, 1/10W, 1% 133625-2003 R48 200K, 0805, 1/10W, 1% 133625-2003

Description Part Number Note

I/O PCB ELECTRICAL PART LIST

Resistors (continued)

Reference

Designator

R49 10 OHM, 0805, 1/10W, 1% 133625-10R0 R53 10 OHM, 0805, 1/10W, 1% 133625-10R0 R63 10 OHM, 0805, 1/10W, 1% 133625-10R0 R64 10 OHM, 0805, 1/10W, 1% 133625-10R0 R65 10 OHM, 0805, 1/10W, 1% 133625-10R0 R66 100 OHM, 0805, 1/10W, 1% 133625-1000 R67 10K, 0805, 1/10W, 1% 133625-1002 R69 200 OHM, 0805, 1/10W, 1% 133625-2000 R70 10 OHM, 0805, 1/10W, 1% 133625-10R0 R71 330 OHM, 0805, 1/10W, 1% 133625-3300 R72 1K, 0805, 1/10W, 1% 133625-1001 R73 10 OHM, 0805, 1/10W, 1% 133625-10R0 R74 10K, 0805, 1/10W, 1% 133625-1002 R75 2K, 0805, 1/10W, 1% 133625-2001 R76 300 OHM, 0805, 1/10W, 1% 133625-3000 R77 47K, 0805, 1/10W, 1% 133625-4702 R78 75 OHM, 0805, 1/10W, 1% 133625-75R0 R79 47K, 0805, 1/10W, 1% 133625-4702 R80 2K, 0805, 1/10W, 1% 133625-2001 R81 0 OHM, 0805, 1/10W 133627 R82 100 OHM, 0805, 1/10W, 1% 133625-1000 R83 10K, 0805, 1/10W, 1% 133625-1002 R84 10K, 0805, 1/10W, 1% 133625-1002 R86 100 OHM, 1206, 1/8W, 1% 124894-1000 R87 0 OHM, 0805, 1/10W 133627 R88 300 OHM, 0805, 1/10W, 1% 133625-3000 R89 10K, 0805, 1/10W, 1% 133625-1002 R90 100 OHM, 0805, 1/10W, 1% 133625-1000 R91 0 OHM, 0805, 1/10W 133627 R92 10K, 0805, 1/10W, 1% 133625-1002 R93 10K, 0805, 1/10W, 1% 133625-1002 R94 0 OHM, 0805, 1/10W 133627 R95 10K, 0805, 1/10W, 1% 133625-1002 R98 2K, 0805, 1/10W, 1% 133625-2001 R99 100K, SM, 0805, 1/10W, 1% 133625-1003 R104 4.99K, 0805, 1/10W, 1% 133625-4991 R105 1.0K, 1206, 1/8W, 1% 124894-1001 R106 1.0K, 1206, 1/8W, 1% 124894-1001 R108 470 OHM, 0805, 1/10W, 1% 133625-4700 R109 1.0K, 1206, 1/8W, 1% 124894-1001 R112 1.0K, 1206, 1/8W, 1% 124894-1001 R115 100K, SM, 0805, 1/10W, 1% 133625-1003 R116 1.0K, 1206, 1/8W, 1% 124894-1001 R117 1.0K, 1206, 1/8W, 1% 124894-1001 R118 1.0K, 1206, 1/8W, 1% 124894-1001 R119 1K, 0805, 1/10W, 1% 133625-1001

Description Part Number Note

I/O PCB ELECTRICAL PART LIST

Resistors (continued)

Reference

Designator

R120 1.0K, 1206, 1/8W, 1% 124894-1001 R121 100K, SM, 0805, 1/10W, 1% 133625-1003 R122 100K, SM, 0805, 1/10W, 1% 133625-1003 R123 1K, 0805, 1/10W, 1% 133625-1001 R124 100K, SM, 0805, 1/10W, 1% 133625-1003 R125 100K, SM, 0805, 1/10W, 1% 133625-1003 R126 1.0K, 1206, 1/8W, 1% 124894-1001 R127 1.0K, 1206, 1/8W, 1% 124894-1001 R128 200K, 0805, 1/10W, 1% 133625-2003 R129 470 OHM, 0805, 1/10W, 1% 133625-4700 R130 100 OHM, 0805, 1/10W, 1% 133625-1000 R131 1.0K, 1206, 1/8W, 1% 124894-1001

Reference

Designator

C1 47pF, 0805, C0G, 50V, 5% 133622-470 C2 1000pF, 0805, X7R, 50V, 10% 133623-102 C3 270pF, 0805, C0G, 50V, 5% 133622-271 C4 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C5 270pF, 0805, C0G, 50V, 5% 133622-271 C6 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C7 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C8 47pF, 0805, C0G, 50V, 5% 133622-470 C10 270pF, 0805, C0G, 50V, 5% 133622-271 C11 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C12 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C13 1000pF, 0805, X7R, 50V, 10% 133623-102 C14 270pF, 0805, C0G, 50V, 5% 133622-271 C15 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C16 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C17 15pF, 0805, C0G, 50V, 5% 133622-150 C18 15pF, 0805, C0G, 50V, 5% 133622-150 C19 47pF, 0805, C0G, 50V, 5% 133622-470 C20 1000pF, 0805, X7R, 50V, 10% 133623-102 C21 270pF, 0805, C0G, 50V, 5% 133622-271 C22 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C23 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C24 1000pF, 0805, X7R, 50V, 10% 133623-102 C25 270pF, 0805, C0G, 50V, 5% 133622-271 C26 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C27 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C28 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C29 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C30 47pF, 0805, C0G, 50V, 5% 133622-470

Description Part Number Note

Capacitors

Description Part Number Note

I/O PCB ELECTRICAL PART LIST

Capacitors (continued)

Reference

Designator

C31 1000pF, 0805, X7R, 50V, 10% 133623-102 C32 270pF, 0805, C0G, 50V, 5% 133622-271 C33 .033uF, 0805, X7R, 50V, 5% 133623-3335 C34 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C35 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C37 270pF, 0805, C0G, 50V, 5% 133622-271 C38 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C39 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C40 .033uF, 0805, X7R, 50V, 5% 133623-3335 C41 .033uF, 0805, X7R, 50V, 5% 133623-3335 C42 .033uF, 0805, X7R, 50V, 5% 133623-3335 C44 .033uF, 0805, X7R, 50V, 5% 133623-3335 C45 .033uF, 0805, X7R, 50V, 5% 133623-3335 C46 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C47 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C48 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C49 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C50 22uF, ALUM EL, SM, 16V, 85C, 20% 177902-220C C51 1000uF, EL, 105C, 35V, 20% 261416-102 C52 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C53 4.7uF, AL EL, SM, 35V, 85C, 20% 177902-4R7V C54 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C55 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C56 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C57 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C58 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C59 22uF, ALUM EL, SM, 16V, 85C, 20% 177902-220C C60 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C61 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C62 47pF, 0805, C0G, 50V, 5% 133622-470 C64 47pF, 0805, C0G, 50V, 5% 133622-470 C67 1000pF, 0805, X7R, 50V, 10% 133623-102 C68 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C69 .068uF, 0805, X7R, 50V, 10% 133622-683 C70 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C71 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C72 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C73 .068uF, 0805, X7R, 50V, 10% 133622-683 C74 1000pF, 0805, X7R, 50V, 10% 133623-102 C75 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C76 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C77 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C78 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C79 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C80 .1uF, SM, 0805, X7R, 50V, 10% 133623-104 C81 .1uF, SM, 0805, X7R, 50V, 10% 133623-104

Description Part Number Note

I/O PCB ELECTRICAL PART LIST

Diodes

Reference

Designator

D1 ZENER, SOT23, 7.5V 261419 D2 DUAL, BAV99R-R, SOT23 147239 D3 LED, TH, 3MM, IR, 1.2V 256474 D8 DUAL, BAV99R-R, SOT23 147239 D9 DUAL, BAV99R-R, SOT23 147239 D18 DUAL, BAV99R-R, SOT23 147239 D19 DUAL, BAV99R-R, SOT23 147239 D21 DUAL, BAV99R-R, SOT23 147239 D22 RECTIFIER, BRIDGE, 50V, 1.0A 112027 D23 DUAL, BAV99R-R, SOT23 147239 D24 DUAL, BAV99R-R, SOT23 147239 D25 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D26 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D27 LED, TH, 5MM, 2V, DIFFUSE, GRN 261420-05 D28 LED, TH, 5MM, 2V, DIFFUSE, YEL 261420-07 D29 LED, TH, 5MM, 2V, DIFFUSE, RED 261420-01 D30 LED, TH, 5MM, 2V, DIFFUSE, YEL 261420-07 D31 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D32 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D33 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D34 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D35 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D36 DUAL, BAV99R-R, SOT23 147239 D37 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D38 DUAL, BAV99R-R, SOT23 147239 D39 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D40 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414 D41 DUAL, ZENER, SOT23, 16V, COMMON ANODE 261414

Description Part Number Note

Transistors

Reference

Designator

Q1 NPN, SOT23, 2SC2812 134741 Q2 NPN, SOT23, 2SC2812 134741 Q4 NPN, SOT23, 2SC2812 134741 Q5 RELAY, SSR, LO-RON, 6-PIN, SMT 252450 3

Q6 TRIAC, 8A, 600V, D2PAK 197226 3

Q7 NPN, SOT23, 2SC2812 134741

Description Part Number Note

I/O PCB ELECTRICAL PART LIST

Integrated Circuits

Reference

Designator

U1 OP AMP, DUAL, SO8, NJM5532M-TE2 256429 U2 OP AMP, DUAL, SO8, NJM5532M-TE2 256429 U3 CMOS ANALOG MUX, DUAL 4-CHANNEL,

DG409CY

U4 MICRO RESET CIRCUIT, SOT23,

MAX809JEUR U5 MICRO, PROGRAMMED, PIC16F877 256469-001 U6 SERIAL EEPROM, 128X8 BIT, SOIC8, 24C01A 184044 U7 OP AMP, DUAL, SO8, NJM5532M-TE2 256429 U8 OP AMP, DUAL, SO8, NJM5532M-TE2 256429 U9 CMOS ANALOG MUX, DUAL 4-CHANNEL,

DG409CY U10 +5V, RS232 TRANSCVR, SO16, MAX202CSE 256487 U11 SENSOR, IR DET, RPM-7138-H5, NO SHLD 256780-001 U12 VOLT REG, 5V, TO 252 (DPAK), L78M05 197227-001 U14 +8V REG, TO 92, 78L08 146234 U15 OP AMP, DUAL, SO8, NJM5532M-TE2 256429 U16 2 INPUT POS AND GATE,5 PIN SOP 261421

Description Part Number Note

256483

250096

256483

Miscellaneous

Reference

Designator

T1 XFMR, S/PDIF 254185 T2 XFMR, S/PDIF 254185 T3 XFMR, S/PDIF 254185 T4 XFMR, S/PDIF 254185 T5 XFMR, STANDBY, DUAL PRIMARY,

115/230V, 50/60Hz F1 POLYSWITCH, FUSE, RESETTABLE, 50V,

100mA HOLD CURRENT F2 POLYSWITCH, FUSE, RESETTABLE, 50V,

100mA HOLD CURRENT F4 FUSE, T4A, 5x20mm, 250V, 4A, SLO BLO 177311-04000 3

FC1 CLIP, FUSE, PCB MOUNT 178548 3

FC2 CLIP, FUSE, PCB MOUNT 178548 3

J4 RIBBON CABLE, J4 IO TO J9 DSP, 14 COND 256462 J5 CONN, HOUSING, AC, 125V, 7A 146563 3

J6 HDR, PCB MNT, 5 POS, L&R A IN, L&R V IN,

IR I/O J7 RJ-45 JACK 196357 J8 HDR, PCB MNT, 4 POS, LIFESTYLE INPUT,

FRONT OUT, REAR OUT

Description Part Number Note

256458 3

190348-010 3

177291-05

177291-04

I/O PCB ELECTRICAL PART LIST

Miscellaneous (continued)

Reference

Designator

J9 HDR, PCB MNT, 3 POS, SERIAL I/O,

TV&EXT PWR

J10 HDR, PCB MNT, 5 POS, L&R A IN, L&R V IN,

IR I/O

J11 HDR, PCB MNT, 3 POS, SERIAL I/O,

TV&EXT PWR

J12 HDR, PCB MNT, 4 POS, LIFESTYLE INPUT,

FRONT OUT, REAR OUT

J13 HDR, PCB MNT, 2 POS, CENTER & BASS

OUTPUT

J14 HDR, PCB MNT, 4 POS, LIFESTYLE INPUT,

FRONT OUT, REAR OUT

J15 HDR, PCB MNT, 2 POS, CENTER & BASS

OUTPUT

J18 HDR, PCB MNT, 3 POS, XFMR PRIMARY 261417-03 3

J21 HDR, PCB MNT, 5 POS, L&R A IN, L&R V IN,

IR I/O J22 CONN, HEADER, SOCKET, PCB MNT 133224-15 JP1 JUMPER, 6MM 261418 JP3 JUMPER, 6MM 261418 S1 SWITCH, DIP, SM, PCB MNT, 2 CKT 256774-002 S4 SWITCH, DIP, SM, PCB MNT, 4 CKT 256774-004 S7 SWITCH, DIP, SM, PCB MNT, 4 CKT 256774-004 S9 SWITCH, POWER, PCB MNT, SPST, 125V, 16A 196101 3

Description Part Number Note

177291-03

177291-05

177291-03

177291-04

177291-02

177291-04

177291-02

177291-05

K1 RELAY, DPDT, 5V 256476-05 Y1 RES, CER, 8.00MHZ +/- .5% 180997 U5a SOCKET, SM, POL, 44PIN PLCC W/POST 256488

DSP PCB ELECTRICAL PART LIST

Resistors

Reference

Designator

R2 100 OHM, 0805, 1/10W, 5% 133626-1015 R3 2 OHM, 0805, 1/10W, 5% 133626-2R05 R4 30 OHM, 1206, 1/8W, 5% 124895-3005 R5 100 OHM, 0805, 1/10W, 5% 133626-1015 R6 3.48K, 0805, 1/10W, 1% 133625-3481 R7 6.19K, 0805, 1/10W, 1% 133625-6191 R10 16 OHM, 2512, 1W, 5% 181895-16R0 3

R11 16 OHM, 2512, 1W, 5% 181895-16R0 3

R12 2.00K, 0805, 1/10W, 5% 133626-2025 R100 1.0K, ARRAY, SMT, 4 POS, 5% 186433-1024 R101 1.0K, ARRAY, SMT, 4 POS, 5% 186433-1024 R102 1.00K, 0805, 1/10W, 1% 133625-1001 R103 100 OHM, 0805, 1/10W, 1% 133625-1000 R104 300 OHM, 0805, 1/10W, 5% 133626-3015 R107 1.00K, 0805, 1/10W, 1% 133625-1001 R108 3.0K, 0805, 1/10W, 5% 133626-3025 R111 1.00K, 0805, 1/10W, 1% 133625-1001 R112 100 OHM, 0805, 1/10W, 1% 133625-1000 R113 300 OHM, 0805, 1/10W, 5% 133626-3015 R116 1.00K, 0805, 1/10W, 1% 133625-1001 R125 3.0K, 0805, 1/10W, 5% 133626-3025 R131 10.0K, 0805, 1/10W, 1% 133625-1002 R132 60.4K, 0805, 1/10W, 1% 133625-6042 R135 200 OHM, 0805, 1/10W, 5% 133626-2015 R136 10.0K, 0805, 1/10W, 1% 133625-1002 R137 60.4K, 0805, 1/10W, 1% 133625-6042 R140 200 OHM, 0805, 1/10W, 5% 133626-2015 R141 10.0K, 0805, 1/10W, 1% 133625-1002 R142 60.4K, 0805, 1/10W, 1% 133625-6042 R145 200 OHM, 0805, 1/10W, 5% 133626-2015 R146 10.0K, 0805, 1/10W, 1% 133625-1002 R147 60.4K, 0805,1/10W,1%, 133625-6042 R150 200 OHM, 0805, 1/10W, 5% 133626-2015 R151 10.0K, 0805, 1/10W, 1% 133625-1002 R152 60.4K, 0805, 1/10W, 1% 133625-6042 R155 200 OHM, 0805, 1/10W, 5% 133626-2015 R156 10.0K, 0805, 1/10W, 1% 133625-1002 R157 60.4K, 0805, 1/10W, 1% 133625-6042 R160 200 OHM, 0805, 1/10W, 1% 133625-2000 R161 75 OHM, 0805, 1/10W, 5% 133626-7505 R164 200 OHM, 0805, 1/10W, 5% 133626-2015 R165 100K, 0805, 1/10W, 5% 133626-1045 R166 100K, 0805, 1/10W, 5% 133626-1045 R167 100K, 0805, 1/10W, 5% 133626-1045

Description Part Number Note

DSP PCB ELECTRICAL PART LIST

Resistors (continued)

Reference

Designator

R168 100K, 0805, 1/10W, 5% 133626-1045 R169 100K, 0805, 1/10W, 5% 133626-1045 R170 100K, 0805, 1/10W, 5% 133626-1045 R171 100K, 0805, 1/10W, 5% 133626-1045 R175 1.0 M, 0805, 1/10W, 1% 133625-1004 R176 2 OHM, 0805, 1/10W, 5% 133626-2R05 R185 75 OHM, 0805, 1/10W, 5% 133626-7505 R186 75 OHM, 0805, 1/10W, 5% 133626-7505 R187 75 OHM, 0805, 1/10W, 5% 133626-7505 R188 1.00K, 0805, 1/10W, 1% 133625-1001 R189 6.04K, 0805, 1/10W, 1% 133625-6041 R190 1.00K, 0805, 1/10W, 1% 133625-1001 R191 6.04K, 0805, 1/10W, 1% 133625-6041 R192 75 OHM, 0805, 1/10W, 5% 133626-7505 R193 300 OHM, 0805, 1/10W, 5% 133626-3015 R194 300 OHM, 0805, 1/10W, 5% 133626-3015 R195 300 OHM, 0805, 1/10W, 5% 133626-3015 R196 300 OHM, 0805, 1/10W, 5% 133626-3015 R197 300 OHM, 0805, 1/10W, 5% 133626-3015 R198 300 OHM, 0805, 1/10W, 5% 133626-3015 R202 10.0K, 0805, 1/10W, 5% 133626-1035 R205 10.0K, 0805, 1/10W, 5% 133626-1035 R206 2.80K, 0805, 1/10W, 1% 133625-2801 R207 10K, THERMISTOR, 0805, 5% 197229 3

Description Part Number Note

R208 10.0K, 0805, 1/10W, 5% 133626-1035 R211 300K, 0805, 1/10W, 5% 133626-3045 R216 20K, 0805, 1/10W, 5% 133626-2035 R217 100K, 0805, 1/10W, 5% 133626-1045 R218 20K, 0805, 1/10W, 5% 133626-2035 R222 10.0K, 0805, 1/10W, 5% 133626-1035 R226 40.2K, 0805, 1/10W, 1% 133625-4022 R230 20K, 0805, 1/10W, 5% 133626-2035 R232 200K, 0805, 1/10W, 5% 133626-2045 R233 200K, 0805, 1/10W, 5% 133626-2045 R234 300 OHM, 0805, 1/10W, 5% 133626-3015 R244 10.0K, 0805, 1/10W, 5% 133626-1035 R245 10.0K, 0805, 1/10W, 5% 133626-1035 R246 1.00K, 0805, 1/10W, 1% 133625-1001 R248 1.00K, 0805, 1/10W, 1% 133625-1001 R250 1.00K, 0805, 1/10W, 1% 133625-1001 R252 10.0K, 0805, 1/10W, 5% 133626-1035 R253 2.00K, 0805, 1/10W, 5% 133626-2025 R254 10.0K, 0805, 1/10W, 5% 133626-1035 R255 2.00K, 0805, 1/10W, 5% 133626-2025 R256 2.00K, 0805, 1/10W, 5% 133626-2025

DSP PCB ELECTRICAL PART LIST

Resistors (continued)

Reference

Designator

R257 300 OHM, 0805, 1/10W, 5% 133626-3015 R260 1.00K, CHIP, 0805, 1/10W, 1% 133625-1001 R261 10.0K, 0805, 1/10W, 5% 133626-1035 R262 1.00K, 0805, 1/10W, 1% 133625-1001 R263 30K, 0805, 1/10W, 5% 133626-3035 R265 2.00K, 0805, 1/10W, 5% 133626-2025 R266 1.00K, 0805, 1/10W, 1% 133625-1001 R268 2.00K, 0805, 1/10W, 5% 133626-2025 R270 2.00K, 0805, 1/10W, 5% 133626-2025 R275 30K, CHIP, 0805, 1/10W, 5% 133626-3035 R280 10.0K, 0805, 1/10W, 5% 133626-1035 R281 20K, 0805, 1/10W, 5% 133626-2035 R282 20K, 0805, 1/10W, 5% 133626-2035 R402 3.9K, ARRAY, SMT, 4 POS, 5% 186433-3924 R404 3.9K, ARRAY, SMT, 4 POS, 5% 186433-3924 R405 3.90K, 0805, 1/10W, 5% 133626-3925 R406 75 OHM, CHIP, 0805, 5% 133626-7505 R407 75 OHM, CHIP, 0805, 5% 133626-7505 R408 75 OHM, CHIP, 0805, 5% 133626-7505 R409 510 OHM, 0805, 1/10W, 5% 133626-5115 R410 3.90K, 0805, 1/10W, 5% 133626-3925 R411 3.0K, 0805, 1/10W, 5% 133626-3025 R412 510 OHM, 0805, 1/10W, 5% 133626-5115 R415 3.90K, 0805, 1/10W, 5% 133626-3925 R416 3.90K, 0805, 1/10W, 5% 133626-3925 R417 3.90K, 0805, 1/10W, 5% 133626-3925 R418 3.90K, 0805, 1/10W, 5% 133626-3925 R419 3.90K, 0805, 1/10W, 5% 133626-3925 R420 3.90K, 0805, 1/10W, 5% 133626-3925 R421 3.9K, ARRAY, SMT, 4 POS, 5% 186433-3924 R435 3.90K, 0805, 1/10W, 5% 133626-3925 R500 48.7K, 0805, 1/10W, 1% 133625-4872 R501 301K, 0805, 1/10W, 1% 133625-3013 R502 49.9K, 0805, 1/10W, 1% 133625-4992 R503 4.99K, 0805, 1/10W, 1% 133625-4991 R510 100 OHM, 0805, 1/10W, 5% 133626-1015

Description Part Number Note

Capacitors

Reference

Designator

C1 .01uF, 0805, X7R, 50V, 10% 133623-103 C2 10uF, EL, 85C, 25V, 20% 149947-100E C3 0.01uF, 0805, X7R, 50V, 10% 133623-103 C4 330pF, 0805, COG, 50V, 5% 133622-331 C5 1.0uF, 1206, X7R, 25V, 10% 262063-105 C6 1.0uF, 1206, X7R, 25V, 10% 262063-105 C7 47pF, 0805, COG, 50V, 5% 133622-470

Description Part Number Note

DSP PCB ELECTRICAL PART LIST

Capacitors (continued)

Reference

Designator

C8 1.0uF, 1206, X7R, 25V, 10% 262063-105 C100 3300pF, 0805, X7R, 50V, 10% 133623-332 C102 330pF, 0805, COG, 50V, 5% 133622-331 C103 100pF, 0805, COG, 50V, 5% 133622-101 C104 10uF, EL, 85C, 25V, 20% 149947-100E C105 3300pF, 0805, X7R, 50V, 10% 133623-332 C106 .01uF, 0805, X7R, 50V, 10% 133623-103 C107 .01uF, 0805, X7R, 50V, 10% 133623-103 C108 .01uF, 0805, X7R, 50V, 10% 133623-103 C109 3300pF, 0805, X7R, 50V, 10% 133623-332 C110 330pF, 0805, COG, 50V, 5% 133622-331 C111 100pF, 0805, COG, 50V, 5% 133622-101 C112 10uF, EL, 85C, 25V, 20% 149947-100E C113 3300pF, 0805, X7R, 50V, 10% 133623-332 C114 .22uF, TANT, SMT, 35V, 20% 262073-V224A C115 .022uF, 0805, X7R, 50V, 10% 133623-223 C116 2.2uF, TANT, 10V, 20%, A SIZE 196981-

C117 .01uF, 0805, X7R, 50V, 10% 133623-103 C118 .01uF, 0805, X7R, 50V, 10% 133623-103 C121 1000pF, 0805, COG, 50V, 5% 133622-102 C124 1000pF, 0805, COG, 50V, 5% 133622-102 C127 1000pF, 0805, COG, 50V, 5% 133622-102 C130 1000pF, 0805, COG, 50V, 5% 133622-102 C131 .01uF, 0805, X7R, 50V, 10% 133623-103 C132 .01uF, 0805, X7R, 50V, 10% 133623-103 C135 1000pF, 0805, COG, 50V, 5% 133622-102 C138 1000pF, 0805, COG, 50V, 5% 133622-102 C139 39pF, 0805, COG, 50V, 5% 133622-390 C140 39pF, 0805, COG, 50V, 5% 133622-390 C144 .01uF, 0805, X7R, 50V, 10% 133623-103 C145 .01uF, 0805, X7R, 50V, 10% 133623-103 C146 0.01uF, 805, X7R, 50V, 10% 133623-103 C150 47pF, 0805, COG, 50V, 5% 133622-470 C151 .01uF, 0805, X7R, 50V, 10% 133623-103 C155 100pF, 0805, COG, 50V, 5% 133622-101 C156 100pF, 0805, COG, 50V, 5% 133622-101 C157 100pF, 0805, COG, 50V, 5% 133622-101 C158 100pF, 0805, COG, 50V, 5% 133622-101 C159 100pF, 0805, COG, 50V, 5% 133622-101 C160 1000pF, 0805, COG, 50V, 5% 133622-102 C200 .01uF, 0805, X7R, 50V, 10% 133623-103 C201 .01uF, 0805, X7R, 50V, 10% 133623-103 C203 .01uF, 0805, X7R, 50V, 10% 133623-103 C204 10uF, EL, 85C, 25V, 20% 149947-100E C205 33pF, 0805, COG, 50V, 5% 133622-330

Description Part Number Note

A225A2

DSP PCB ELECTRICAL PART LIST

Capacitors (continued)

Reference

Designator

C206 33pF, 0805, COG, 50V, 5% 133622-330 C207 1.0uF, 1206, X7R, 25V, 10% 262063-105 C208 1.0uF, 1206, X7R, 25V, 10% 262063-105 C209 1000pF, 0805, COG, 50V, 5% 133622-102 C211 330pF, 0805, COG, 50V, 5% 133622-331 C212 330pF, 0805, COG, 50V, 5% 133622-331 C213 330pF, 0805, COG, 50V, 5% 133622-331 C214 1000pF, 0805, COG, 50V, 5% 133622-102 C215 330pF, 0805, COG, 50V, 5% 133622-331 C216 330pF, 0805, COG, 50V, 5% 133622-331 C217 1000pF, 0805, COG, 50V, 5% 133622-102 C400 .033uF, 0805, X7R, 50V, 10% 133623-333 C402 33pF, 0805, COG, 50V, 5% 133622-330 C403 33pF, 0805, COG, 50V, 5% 133622-330 C404 .033uF, 0805, X7R, 50V, 10% 133623-333 C410 33pF, 0805, COG, 50V, 5% 133622-330 C411 33pF, 0805, COG, 50V, 5% 133622-330 C414 .033uF, 0805, X7R, 50V, 10% 133623-333 C415 .033uF, 0805, X7R, 50V, 10% 133623-333 C416 .033uF, 0805, X7R, 50V, 10% 133623-333 C417 .033uF, 0805, X7R, 50V, 10% 133623-333 C418 .033uF, 0805, X7R, 50V, 10% 133623-333 C419 .033uF, 0805, X7R, 50V, 10% 133623-333 C420 .033uF, 0805, X7R, 50V, 10% 133623-333 C421 .033uF, 0805, X7R, 50V, 10% 133623-333 C422 .033uF, 0805, X7R, 50V, 10% 133623-333 C423 .033uF, 0805, X7R, 50V, 10% 133623-333 C424 .033uF, 0805, X7R, 50V, 10% 133623-333 C425 .033uF, 0805, X7R, 50V, 10% 133623-333 C426 .033uF, 0805, X7R, 50V, 10% 133623-333 C427 .033uF, 0805, X7R, 50V, 10% 133623-333 C428 .033uF, 0805, X7R, 50V, 10% 133623-333 C429 .033uF, 0805, X7R, 50V, 10% 133623-333 C500 470uF, EL, 105C, 16V, 20% 137454-471 C501 1200pF, 0805, X7R, 50V, 10% 133623-122 C503 .22uF, BOX, 85C, 50V, 5% 137127-224 C504 .033uF, 0805, X7R, 50V, 10% 133623-333 C505 470uF, EL, 85C, 25V, 20% 149948-471E C506 .47uF, 1206, X7R, 25V, 10% 262063-474 C507 3300pF, 0805, X7R, 50V, 10% 133623-332 C508 33pF, 0805, COG, 50V, 5% 133622-330 C509 1200pF, 0805, X7R, 50V, 10% 133623-122 C515 10uF, EL, 85C, 25V, 20% 149947-100E

Description Part Number Note

DSP PCB ELECTRICAL PART LIST

Inductors

Reference

Designator

L1 400 OHMS, CHIP, 0805 188587-401 L2 400 OHMS, CHIP, 0805 188587-401 L200 400 OHMS, CHIP, 0805 188587-401 L500 100uH, FIXED, SMT, 20% 251161-101 L501 22uH, SMD, 20% 173273-220

Reference

Designator

D1 BAV99, DIODE, DUAL, SOT-23 147239 D2 BAV99, DIODE, DUAL, SOT-23 147239 D3 BAV99, DIODE, DUAL, SOT-23 147239 D100 BAV99, DIODE, DUAL, SOT-23 147239 D102 BAV99, DIODE, DUAL, SOT-23 147239 D103 BAV99, DIODE, DUAL, SOT-23 147239 D104 BAV99, DIODE, DUAL, SOT-23 147239 D105 BAV99, DIODE, DUAL, SOT-23 147239 D200 BAV70, DIODE, DUAL, SOT-23 147249 D202 BAV99, DIODE, DUAL, SOT-23 147239 D500 SCHOTTKY, 40V, 3A 193847-001 ZR200 1N5232, ZENER, 5.6V, 225 MW 135247-5232 ZR201 1N5232, ZENER, 5.6V, 225 MW 135247-5232

Description Part Number Note

Diodes

Description Part Number Note

Transistors

Reference

Designator

Q200 NPN, 47K BIAS RES, SOT23 258024 Q200 BPLR, NPN, 50V, 100mA, SOT23 146817 Q201 NPN, SOT, MMBT3904 146819 Q204 NPN, SOT, MMBT3904 146819 Q500 BPLR, NPN, 50V, 100mA, SOT23 146817

Description Part Number Note

DSP PCB ELECTRICAL PART LIST

Integrated Circuits

Reference

Designator

U1 L78M05, VOLT REG, 5V, DPAK 197227-001 U100 CS4226-KQ, CODEC 197221 U101 74LCX244, OCTAL BUFFER, 3V 193841-001 U102 74ACT244, OCTAL BUFFER 193842-001 U103 TLO74D, QUAD OP AMP, SOIC 186112 U104 TLO74D, QUAD OP AMP, SOIC 186112 U105 NJM2082M, OP AMP, DUAL, SO-8 146820 U106 74HC73, JK FLOP, SO-14 196670-001 U200 MAX809, RESET, SOT23, 4.63V 191158-01 U201 EEPROM, 256 X 8 BITS 252864-002 U202 TMP87PH47U, UC, OTP, PROGRAMMED 262631 U400 74LCX00IC, QUAD NAND, 3V, S0-14 193858-001 U500 VOLT REG, 3.0V, 3.5A, SMPS 193846-001 DSP1 DSP, QFP 240, ADSP21061LKS-160 193834 DSP2 DSP, QFP 240, ADSP21061LKS-160 193834

Reference

Designator

CR100 CRYSTAL, 11.2896 MHZ, HC49S, SMD 197225 CR400 CRYSTAL, 40.000 MHZ, HC49S, SMD 254053 J8 CONN, HEADER, VERT, 2MM, JSTPHD 256464-18 J9 CONN, HEADER, JSTRK-H141TD-0190 259536-14 X600 RESONATOR, CER, 8.00 MHZ +/- 5% 180997

- SHIELD, TOP COVER 196674

- SHIELD, BOTTOM COVER 196675

Description Part Number Note

Miscellaneous

Description Part Number Note

AMPLIFIER PCB ELECTRICAL PART LIST

Resistors

Reference

Designator

R700 22.1K, 1206, 1/8W, 1% 124984-2212 R701 274K, 1206, 1/8W, 1% 124894-2743 R702 1.50K, 1206, 1/8W, 5% 124895-1525 R703 1.50K, 1206, 1/8W, 5% 124895-1525 R704 5.1 OHM, FUSING, 2W, 5% 170174-5R1 3

R705 1.50K, 1206, 1/8W, 5% 124895-1525 R706 1.50K, 1206, 1/8W, 5% 124895-1525 R707 75 OHM, 1206, 1/8W, 5% 124895-7505 R708 22.1K, 0805, 1/10W, 1% 133625-2212 R709 10.0K, 0805, 1/10W, 1% 133625-1002 R710 5.1 OHM, 1206, 1/8W, 5% 124895-5R15 R711 220 OHM, 1206, 1/8W, 5% 124895-2215 R712 75 OHM, 1206, 1/8W, 5% 124895-7505 R713 20 OHM, FUSING, 1/4W, 5% 130102-200 3

R714 20 OHM, FUSING, 1/4W, 5% 130102-200 3

R715 100K, 1206, 1/8W, 5% 124895-1045 R716 274K, 1206, 1/8W, 1% 124894-2743 R717 100K, 1206, 1/8W, 5% 124895-1045 R718 274K, 1206, 1/8W, 1% 124894-2743 R719 2.49K, 1206, 1/8W, 1% 124894-2491 R720 49.9K, 1206, 1/8W, 1% 124894-4992 R721 49.9K, 1206, 1/8W, 1% 124894-4992 R722 2.49K, 1206, 1/8W, 1% 124894-2491 R723 16.5K, 1206, 1/8W, 1% 124894-1652 R724 1.0K, 1206, 1/8W, 5% 124895-1025 R725 100K, 1206, 1/8W, 5% 124895-1045 R726 1.0K, 1206, 1/8W, 5% 124895-1025 R727 100K, 1206, 1/8W, 5% 124895-1045 R728 100K, 1206, 1/8W, 5% 124895-1045 R729 2.49K, 1206, 1/8W, 1% 124894-2491 R730 1.0K, 1206, 1/8W, 5% 124895-1025 R731 3.65K, 1206, 1/8W, 1% 124894-3651 R732 1.0K, 1206, 1/8W, 5% 124895-1025 R733 100K, 1206, 1/8W, 5% 124895-1045 R734 3.65K, 1206, 1/8W, 1% 124894-3651 R735 1.0K, 1206, 1/8W, 5% 124895-1025 R736 49.9K, 1206, 1/8W, 1% 124894-4992 R737 16.5K, 1206, 1/8W, 1% 124894-1652 R738 49.9K, 1206, 1/8W, 1% 124894-4992 R739 2.49K, 1206, 1/8W, 1% 124894-2491 R740 10.0K, 1206, 1/8W, 5% 124895-1035 R741 1.0K, 1206, 1/8W, 5% 124895-1025 R742 100K, 1206, 1/8W, 5% 124895-1045

Description Part Number Note

AMPLIFIER PCB ELECTRICAL PART LIST

Resistors (continued)

Reference

Designator

R743 100K, 1206, 1/8W, 5% 124895-1045 R744 100K, 1206, 1/8W, 5% 124895-1045 R745 1.0K, 1206, 1/8W, 5% 124895-1025 R746 10.0K, 1206, 1/8W, 5% 124895-1035 R747 1.0K, 1206, 1/8W, 5% 124895-1025 R748 2.49K, 1206, 1/8W, 1% 124894-2491 R749 49.9K, 1206, 1/8W, 1% 124894-4992 R750 16.5K, 1206, 1/8W, 1% 124894-1652 R751 24.9K, 0805, 1/10W, 1% 133625-2492 R752 49.9K, 1206, 1/8W, 1% 124894-4992 R753 2.49K, 1206, 1/8W, 1% 124894-2491 R754 24.9K, 0805, 1/10W, 1% 133625-2492 R755 2.49K, 1206, 1/8W, 1% 124894-2491 R756 49.9K, 1206, 1/8W, 1% 124894-4992 R757 16.5K, 1206, 1/8W, 1% 124894-1652 R758 49.9K, 1206, 1/8W, 1% 124894-4992 R759 2.49K, 1206, 1/8W, 1% 124894-2491 R760 3.65K, 1206, 1/8W, 1% 124894-3651 R761 1.0K, 1206, 1/8W, 5% 124895-1025 R762 3.65K, 1206, 1/8W, 1% 124894-3651 R763 1.0K, 1206, 1/8W, 5% 124895-1025 R764 1.0K, 1206, 1/8W, 5% 124895-1025 R765 10.0K, 1206, 1/8W, 5% 124895-1035 R766 1.0K, 1206, 1/8W, 5% 124895-1025 R767 100K, 1206, 1/8W, 5% 124895-1045 R768 100K, 1206, 1/8W, 5% 124895-1045 R769 1.0K, 1206, 1/8W, 5% 124895-1025 R770 10.0K, 1206, 1/8W, 5% 124895-1035 R771 1.0K, 1206, 1/8W, 5% 124895-1025 R772 100K, 1206, 1/8W, 5% 124895-1045 R773 1.0K, 1206, 1/8W, 5% 124895-1025 R774 1.0K, 1206, 1/8W, 5% 124895-1025 R775 2.49K, 1206, 1/8W, 1% 124894-2491 R776 2.49K, 1206, 1/8W, 1% 124894-2491 R777 49.9K, 1206, 1/8W, 1% 124894-4992 R778 100K, 1206, 1/8W, 5% 124895-1045 R779 100K, 1206, 1/8W, 5% 124895-1045 R780 16.5K, 1206, 1/8W, 1% 124894-1652 R781 49.9K, 1206, 1/8W, 1% 124894-4992 R782 2.49K, 1206, 1/8W, 1% 124894-2491 R783 10 MEG, 1206, 1/8W, 5% 124895-1065 R784 33.2K, 1206, 1/8W, 1% 124894-3322 R785 10.0K, 1206, 1/8W, 5% 124895-1035 R786 200 OHM, 1206, 1/8W, 5% 124895-2015 R787 49.9K, 1206, 1/8W, 1% 124894-4992 R788 1 OHM, 1206, 1/8W, 5% 124895-1R05

Description Part Number Note

AMPLIFIER PCB ELECTRICAL PART LIST

Resistors (continued)

Reference

Designator

R789 200K, 1206, 1/8W, 1% 124894-2003 R790 16.5K, 1206, 1/8W, 1% 124894-1652 R791 1 MEG, 1206, 1/8W, 5% 124895-1055 R792 1.0K, 1206, 1/8W, 5% 124895-1025 R793 4.22K, 1206, 1/8W, 1% 124894-4221 R794 301 OHM, 1206, 1/8W, 1% 124894-3010 R795 1.0K, 1206, 1/8W, 5% 124895-1025 R796 100K, 1206, 1/8W, 5% 124895-1045 R797 2.49K, 1206, 1/8W, 1% 124894-2491 R798 3.65K, 1206, 1/8W, 1% 124894-3651 R799 432 OHM, 0805, 1/10W, 1% 133625-4320 R800 432 OHM, 0805, 1/10W, 1% 133625-4320 R801 3.65K, 1206, 1/8W, 1% 124894-3651 R802 3.65K, 0805, 1/10W, 1% 133625-3651 R803 1K, 2512, 1W, 5% 181895-1001 3

R804 3.65K, 0805, 1/10W, 1% 133625-3651 R805 3.65K, 0805, 1/10W, 1% 133625-3651 R806 3.65K, 0805, 1/10W, 1% 133625-3651 R807 3.65K, 0805, 1/10W, 1% 133625-3651 R808 10.0K, 1206, 1/8W, 5% 124895-1035 R809 49.9K, 0805, 1/10W, 1% 133625-4992 R810 49.9K, 0805, 1/10W, 1% 133625-4992 R812 100K, 1206, 1/8W, 5% 124895-1045 R813 30K, 0805, 1/10W, 5% 133626-3035 R814 30K, 0805, 1/10W, 5% 133626-3035 R815 30K, 0805, 1/10W, 5% 133626-3035 R816 30K, 0805, 1/10W, 5% 133626-3035 R817 30K, 0805, 1/10W, 5% 133626-3035 R818 30K, 0805, 1/10W, 5% 133626-3035 R819 30K, 0805, 1/10W, 5% 133626-3035 R820 30K, 0805, 1/10W, 5% 133626-3035 R821 100K, 1206, 1/8W, 5% 124895-1045 R822 0.062 OHM, 2512, 1W, 5% 149322-062 3

Description Part Number Note

R823 1 MEG, 0805, 1/10W, 5% 133626-1055 R824 100K, 0805, 1/10W, 1% 133625-1003 R825 2K, 0805, 1/10W, 5% 133626-2025 R826 2K, 0805, 1/10W, 5% 133626-2025 R827 2K, 0805, 1/10W, 5% 133626-2025 R828 274K, 1206, 1/8W, 1% 124894-2743 R900 332 OHM, 1206, 1/8W, 1% 124894-3320 R901 332 OHM, 1206, 1/8W, 1% 124894-3320 R903 332 OHM, 1206, 1/8W, 1% 124894-3320 R904 332 OHM, 1206, 1/8W, 1% 124894-3320 R905 332 OHM, 1206, 1/8W, 1% 124894-3320

AMPLIFIER PCB ELECTRICAL PART LIST

Capacitors

Reference

Designator

C700 .01uF, 0805, X7R, 50V, 10% 133623-103 C701 .01uF, 0805, X7R, 50V, 10% 133623-103 C702 1uF, ALUM EL, SM, 85C, 50V, 20% 177902-010H C703 .01uF, 0805, X7R, 50V, 10% 133623-103 C704 1uF, ALUM EL, SM, 85C, 50V, 20% 177902-010H C705 10uF, ALUM EL, SM, 85C, 25V, 20% 177902-100E C706 10uF, ALUM EL, SM, 85C, 16V, 20% 177902-100C C707 .47uF, ALUM EL, SM, 85C, 50V, 20% 177902-R47H C708 10uF, ALUM EL, SM, 85C, 16V, 20% 177902-100C C709 .47uF, ALUM EL, SM, 85C, 50V, 20% 177902-R47H C710 10uF, ALUM EL, SM, 85C, 16V, 20% 177902-100C C711 10uF, ALUM EL, SM, 85C, 25V, 20% 177902-100E C712 10uF, ALUM EL, SM, 85C, 25V, 20% 177902-100E C713 1uF, ALUM EL, SM, 85C, 50V, 20% 177902-010H C714 .47uF, ALUM EL, SM, 85C, 50V, 20% 177902-R47H C715 10uF, ALUM EL, SM, 85C, 16V, 20% 177902-100C C716 10uF, ALUM EL, SM, 85C, 25V, 20% 177902-100E C717 1uF, ALUM EL, SM, 85C, 50V, 20% 177902-010H C718 10uF, ALUM EL, SM, 85C, 16V, 20% 177902-100C C719 .47uF, ALUM EL, SM, 85C, 50V, 20% 177902-R47H C720 1uF, ALUM EL, SM, 85C, 50V, 20% 177902-010H C721 10uF, ALUM EL, SM, 85C, 25V, 20% 177902-100E C722 10uF, ALUM EL, SM, 85C, 16V, 20% 177902-100C C723 .47uF, ALUM EL, SM, 85C, 50V, 20% 177902-R47H C724 47uF, EL, BP, 85C, 16V, 20% 147522-470 C725 100uF, ALUM EL, SM, 85C, 16V, 20% 177902-101C C726 0.1uF, 1206, X7R, 50V, 10% 124957-104 C727 1uF, ALUM EL, SM, 85C, 50V, 20% 177902-010H C730 4700uF, EL, 105C, 50V, 20%, SNAP-IN 187394 C731 2200uF, EL, 85C, 25V, 20% 185929-222E C732 2200uF, EL, 85C, 25V, 20% 185929-222E C733 0.1uF, 1206, X7R, 50V, 10% 124957-104 C734 1000pF, 1206, COG, 50V, 10% 124956-1022 C735 1000pF, 1206, COG, 50V, 10% 124956-1022 C736 0.1uF, 1206, X7R, 50V, 10% 124957-104 C737 1000pF, 1206, COG, 50V, 10% 124956-1022 C738 1000pF, 1206, COG, 50V, 10% 124956-1022 C739 1000pF, 1206, COG, 50V, 10% 124956-1022 C740 1000pF, 1206, COG, 50V, 10% 124956-1022 C741 .01uF, 1206, X7R, 25V, 5% 131754-103 C742 .01uF, 1206, X7R, 25V, 5% 131754-103 C743 1000pF, 1206, COG, 50V, 10% 124956-1022 C744 0.1uF, 1206, X7R, 50V, 10% 124957-104 C745 1000pF, 1206, COG, 50V, 10% 124956-1022 C746 0.1uF, 1206, X7R, 50V, 10% 124957-104 C747 1000pF, 1206, COG, 50V, 10% 124956-1022

Description Part Number Note

AMPLIFIER PCB ELECTRICAL PART LIST

Capacitors (continued)

Reference

Designator

C748 1000pF, 1206, COG, 50V, 10% 124956-1022 C749 1000pF, 1206, COG, 50V, 10% 124956-1022 C750 1000pF, 1206, COG, 50V, 10% 124956-1022 C751 .01uF, 1206, X7R, 25V, 5% 131754-103 C752 .01uF, 1206, X7R, 25V, 5% 131754-103 C753 3300pF, 1206, X7R, 50V, 10% 124957-332 C754 1000pF, 1206, COG, 50V, 10% 124956-1022 C755 1000pF, 1206, COG, 50V, 10% 124956-1022 C756 1000pF, 1206, COG, 50V, 10% 124956-1022 C757 1000pF, 1206, COG, 50V, 10% 124956-1022 C758 .01uF, 1206, X7R, 25V, 5% 131754-103 C759 270pF, 1206, COG, 50V, 10% 124956-2712 C760 .10uF, 0805, X7R, 50V, 10% 133624 C761 0.1uF, 1206, X7R, 50V, 10% 124957-104 C762 1uF, 1206, X7R, 16V, 10% 181998-105 C763 .10uF, 0805, X7R, 50V, 10% 133624 C764 0.1uF, 1206, X7R, 50V, 10% 124957-104 C765 1uF, 1206, X7R, 16V, 10% 181998-105 C766 3300pF, 1206, X7R, 50V, 10% 124957-332 C767 .10uF, 0805, X7R, 50V, 10% 133624 C768 .10uF, 0805, X7R, 50V, 10% 133624 C770 0.1uF, 1206, X7R, 50V, 10% 124957-104 C771 1uF, 1206, X7R, 16V, 10% 181998-105 C772 0.1uF, 1206, X7R, 50V, 10% 124957-104 C773 0.1uF, 1206, X7R, 50V, 10% 124957-104 C774 0.1uF, 1206, X7R, 50V, 10% 124957-104 C775 0.1uF, 1206, X7R, 50V, 10% 124957-104 C776 0.1uF, 1206, X7R, 50V, 10% 124957-104 C777 0.1uF, 1206, X7R, 50V, 10% 124957-104 C778 0.1uF, 1206, X7R, 50V, 10% 124957-104 C779 0.1uF, 1206, X7R, 50V, 10% 124957-104 C780 2200uF, EL, 85C, 25V, 20% 185929-222E C781 2200uF, EL, 85C, 25V, 20% 185929-222E C790 1uF, 1206, X7R, 16V, 10% 181998-105 C791 4700uF, EL, 105C, 50V, 20%, SNAP-IN 187394 C792 .01uF, 0805, X7R, 50V, 10% 133623-103

Description Part Number Note

AMPLIFIER PCB ELECTRICAL PART LIST

Diodes

Reference

Designator

B700 RECTIFIER, BRIDGE, 100V, 6A 187611 B701 RECTIFIER, BRIDGE, 100V, 6A 187611 D701 ZENER, 5.6V, 225MW, 1N5232 135247-5232 D702 DUAL, SOT-23, BAV99 147239 D703 ZENER, 5.6V, 225MW, 1N5232 135247-5232 D704 1N5402 170219 D705 DUAL, SOT-23, BAV99 147239 D706 1N5402 170219 D707 1N5402 170219 D708 ZENER, 5.6V, 225MW, 1N5232 135247-5232 D709 ZENER, 5.6V, 225MW, 1N5232 135247-5232 D710 1N5402 170219 D711 1N5402 170219 D712 1N5402 170219 D715 DUAL, SOT-23, BAV99 147239 D716 DUAL, SOT-23, BAV99 147239 D718 DUAL, SOT-23, BAV99 147239 D719 DUAL, SOT-23, BAV99 147239 D720 DUAL, SOT-23, BAV99 147239 D721 DUAL, SOT-23, BAV99 147239 D722 DUAL, SOT-23, BAV99 147239 D723 DUAL, SOT-23, BAV99 147239 D724 ZENER, 5.6V, 225MW, 1N5232 135247-5232

Description Part Number Note

Transistors

Reference

Designator

Q700 DARL, P, TIP 147T 172285 Q701 PNP, 55V, 150mA, SOT-23 134743 Q702 NPN, SOT-23, 2SC2812 134741 Q703 NPN, SOT-23, 2SC2812 134741 Q704 PNP, 55V, 150mA, SOT-23 134743 Q705 DARL, P, TIP 147T 172285 Q706 DARL, N, TIP142T 172284 Q707 PNP, 55V, 150mA, SOT-23 134743 Q708 NPN, SOT-23, 2SC2812 134741 Q709 DARL, N, TIP142T 172284 Q710 NPN, SOT-23, 2SC2812 134741 Q711 PNP, 55V, 150mA, SOT-23 134743 Q712 NPN, SOT-23, 2SC2812 134741 Q713 NPN, SOT-23, 2SC2812 134741 Q714 NPN, SOT-23, 2SC2812 134741 Q715 DARL, P, 80V, 25A, SGSD200 197594 Q716 PNP, 2SB560F 140349 Q717 PNP, 55V, 150mA, SOT-23 134743 Q718 DARL, P, 80V, 25A, SGSD200 197594

Description Part Number Note

AMPLIFIER PCB ELECTRICAL PART LIST

Transistors (continued)

Reference

Designator

Q719 DARL, N, 80V, 25A, SGSD100 197593 Q720 DARL, N, 80V, 25A, SGSD100 197593 Q721 PNP, 55V, 150mA, SOT-23 134743 Q722 NPN, SOT-23, 2SC2812 134741 Q723 PNP, 55V, 150mA, SOT-23 134743 Q724 JFET, SOT, MMBF4392 134738 Q725 PNP, 55V, 150mA, SOT-23 134743 Q726 NPN, SOT, 47K, 2SC3395 146817 Q727 PNP, 55V, 150mA, SOT-23 134743

Reference

Designator

U700 POWER AMP, AUDIO, TDA7294 170156 U701 POWER AMP, AUDIO, TDA7294 170156 U702 VOLTAGE COMPARATOR, LM339 187618-001 U703 POWER AMP, AUDIO, TDA 7294 170156 U704 POWER AMP, AUDIO, TDA 7294 170156 U705 POWER AMP, AUDIO, TDA 7294 170156 U706 DUAL COMPARATOR, SO-8, LM393 148584 U707 OP AMP, DUAL, SO-8, NJM2082M 146820 U708 VOLT REG, 37V, TO 220, NEG 137928 U709 VOLT REG, 37V, TO 220, POS 137927

Description Part Number Note

Integrated Circuits

Description Part Number Note

Miscellaneous

Reference

Designator

J700 HDR, PCB MNT, 3A, 250V, 2-ROW, 18 POS 256464-18 3

J701 HDR, PCB MNT, 3A, 250V, 15 POS 133224-15 3

J702 HDR, PCB MNT, 5 POS, XFMR SECONDARY 261417-05 3

Description Part Number Note

PACKAGING PART LIST

Digital BUILT-INvisible® System (see Figure 4)

Item

Number

1 KIT, INSTALLATION HARDWARE, DBIS

CONSISTS OF: SCREW, MACH, #10-24X2.5, PAN, XREC TOGGLE WINGS, #10-24, STEEL

SCREW, TAPP, #10X16, PAN, XREC, 2 2 PACKING, ENDCAP, FOAM 172063 2 3 USER MANUAL, US 256472-01 1 4 SYSTEM ASSY, US 256451-1 1 5 LABEL SET, INPUT CONNECTORS, SEQ 261441 1 6 LINE CORD, 120V, POL, DETACH 198603-001 1 3

7 CARTON, TA-1 THEATER AMPLIFIER 256430 1

- BAG, POLY, 15X28X4 MIL 187487-028 1

Description Part

Number

261442

188409 179296

197892-009

Qty. Note

4 4 4

Figure 4. Digital BUILT-INvisible System Packaging View

INTEGRATED CIRCUIT DIAGRAMS

15 14 13 12 11 10

9 8 7 6 5 4 3 2 1

TOP-VIEW

+Vs (signal)

-Vs (signal)

THERMAL

SHUTDOWN

-Vs (power)

IN+MUTE

MUTE

STANDBY

TDA7294

IN-

IN+

MUTE

STANDBY

STANDBY GROUND

Bose® P/N: 170156, Power Amplifier,

Audio, TDA7294

Pin Function

15. -Vs (Power)

14. OUT

13. +Vs (Power)

12. N.C.

11. N.C.

10. MUTE

9. STAND-BY

8. -VS (Signal)

7. +VS (Signal)

6. Bootstrap

5. N.C.

4. SVR

3. Non-Inverting Input

2. Inverting Input

1. Stand-by Gnd.

+Vs (power)

SHORT-

CIRCUIT

PROTECTION

Pin Function

1. A Output

2. A Inverting Input

3. A Non-inverting Input

4. V-

5. B Non-inverting Input

6. B Inverting Input

7. B Output

8. V+

Bose P/N: 146820, Dual Op-amp, NJM2082

Pin Function

OUT

BOOT-

STRAP

1. A Output

2. A Inverting Input

3. A Non-inverting Input

4. GND

5. B Non-inverting Input

6. B Inverting Input

7. B Output

8. V+

Bose P/N: 148584, Dual Op-amp w/switch,

LM393

Pin Function

1. A Output

2. A Inverting Input

3. A Non-inverting Input

4. V-

5. B Non-inverting Input

6. B Inverting Input

7. B Output

8. V+

Bose P/N: 137927, Voltage Regulator,

LM317T

Bose P/N: 137928, Voltage Regulator,

LM337T

Bose P/N: 148598, Dual Op-amp, NJM4556

PIN FUNCTION

1. A OUTPUT

2. A -INPUT

3. A +INPUT

4. +Vcc

5. B +INPUT

6. B -INPUT

7. B OUTPUT

8. C OUTPUT

9. C -INPUT

10. C +INPUT

11. -Vcc

12. D +INPUT

13. D -INPUT

14. D OUTPUT

Bose P/N: 186112, Quad Op-amp, TL074

INTEGRATED CIRCUIT DIAGRAMS

Bose® P/N: 187618-001, Quad Op-amp, LM339M

Pin Function

1. GND

GND

RESET

Top View

2. RESET Output remains low while Vcc is below the reset

Vcc

threshold, and for a period of time after Vcc rises above the reset threshold.

3. Vcc Supply voltage

Bose P/N: 191158-01, Reset IC, MAX809

Bose P/N: 193841-001, Octal Buffer, 74LCX244

INTEGRATED CIRCUIT DIAGRAMS

Bose® P/N: 193842-001, Octal Buffer,

74ACT244

Bose P/N: 193834, DSP Pinout Diagram,

ADSP21061LKS-160

Bose P/N: 193846-001, Voltage Regulator,

SMPS

Bose P/N: 193834, DSP Pin Assignment Table, ADSP21061LKS-160

INTEGRATED CIRCUIT DIAGRAMS

Bose® P/N: 193858-001, Quad Nand Gate,

MC74CLX00

Bose P/N: 197221, Codec, CS4226KQ

Bose P/N: 196670-001, JK Flop, 74HC73

Bose P/N: 197227, Voltage Regulator, 5 Volt,

DPAK, LM7805Bose P/N: 261415, PIC16F877, I/O Micro

INTEGRATED CIRCUIT DIAGRAMS

Bose® P/N: 253903-32, Microprocessor,

TMP87PH47U

Bose P/N: 256483, Analog MUX, DG409CY, Schematic Diagram

Bose P/N: 256483, Analog MUX, DG409CY,

Pinout Diagram

Bose P/N: 261421, AND Gate, SN74ACH1G08

Bose P/N: 261417, RS-232 Transceiver,

MAX202CSE

Appendix

Accessories used with the TA-1 amplifier

Product Description Product Code

BUILT-INvisible® TA-1 theater amplifier 027356

Audio/Video Integration Accessories – for use with TA-1 amplifier

SE-1 System Expander 027574 CI-1 Control Integrator 027595 TA-1 Remote 027701 Coaxial to RJ45 adapter 027575 IR Sensor 027700

Theater Acoustimass® Series II Bass Module

Acoustimass Series II Bass Module 027383 Acoustimass Bass Module Rough-In kit with Grille - for Series I and II modules 008435

Cube Speakers

Jewel Cube® speaker with wire adapter (black) (each) Jewel Cube speaker with wire adapter (white) (each) CS-2 Cube Speaker array (black) (each) CS-2 Cube speaker array (white) (each)

Cube Speaker Accessories

UB-20 Wall Bracket (white) (available in 10 pack) 017627 UB-20 Wall Bracket (black) (available 10 pack) 017626 AC-2 adapter, for Jewel Cube speakers (white) 024821 AC-2 adapter, for Jewel Cube speakers (black) 024820

Full-Range Speakers

131®-R Speaker (square grill) (pair) 023783 Model 32-P FM Speaker (4 Ohm passive) with Quick Install Bracket 010152 Model 32-R 1.3 Ohm Speaker with Quick Install Bracket 019454 Model 32-P FM Speaker (4 Ohm passive) 008148 Model 32-R 1.2 Ohm Speaker 019455 102 SE Stereo Everywhere® Speaker

Full-Range Speakers Accessories

Model 32 Rough-In (6 per carton) 021814 Model 32 Hole Saw 009871 Full range speaker stereo transformer (8.0 Ohm to 1.2 Ohm) -- for use with TA-

1 theater amplifier, accommodates 1 pair

023983 023984 027610 027611

008510

027613

102 SE Rough-In kit 008051

Music Sources

CD-50 - Four-Zone, 4-source inputs multi-room interface, personal music center, C-1 CD changer

CD-20 Head Unit- Two-Zone, Six-Play CD Music Center w/ Remote 011273

027460

Appendix

Accessories used with the TA-1 amplifier (continued)

Product Description Product Code

Music Source Accessories

Antenna Kit 002140 CD-20 Six disc magazine 016693

Installation Accessories

Digital Source Plate (white, Decora) 027573 Source Plate (white, Decora) 026230 MRI/CD20 source connection cable -- 8 pin male mini-DIN to 8 pin male mini-

DIN, all pins connected Fixed source cable, 7 feet -- 2 male RCA’s to 8 pin male mini-DIN

Variable source cable, 7 feet -- 2 male RCA’s to 8 pin male mini-DIN 027554

026224

027553

CD-50 SYSTEM ASSEMBLY PART LIST

Description Part Number Qty. Note

Console Assembly, Changer, CB-20 188930-101C 1 Essentials Kit, CS-50, 120V Consists of:

- System Assy, PMC Controller

- Carton, D/C, LS Essentials Kit

- Packing, Tray, LS Essentials, UTL PET

- Antenna, FM Dipole, 75 Ohm, F-Connector

- Antenna Assy, AM

- Magazine, 6 Disc

- Line Cord, 120V, Polarized, Detachable

- Power Supply, 120Vac

- Battery, Alkaline, AAA Size

- Guide, Owner’s, CD-50, English

- Bag, Poly, 14.38 x 9.87 x 2 mil

- Card, Info, Warranty, Multi-Language

- Card, Registration and Warranty

- Sheet, Slip, Component Audio

- CD, Test, 9 Language, LS-50

- CD, LM Demo, US

- System Assembly, Multi-Room Interface (MRI)

- Cable, 7 ft., Mini-DIN to Mini-DIN

- Cable, C1 Changer to Multi-Room Interface

- Cable, RCA, 6 ft. Commitment Letter 251001 1 Carton 253061-001 1

259747-1 188909-001 190208-002 190209-004

148589

199824-002

256261

198603-001

178371

179223-01

260068 103351 181460 262933 255805 192262 183768

188945-001

257180 191491

185931-01

1 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 1 1 1 1 1

BUILT-INVISIBLE® SERIES II BASS MODULE

Item Number Description Part Number Note

Conn, Binding Post, Model 203



, Gray

187232-003 2 Screw, Tapp, 8-11 x .75, PAN, XRC/SQ 172672-12 3 Insert, Packing 259825 4 Bag, Poly, 23 x 44 x 10.5 x 1.25 mil 100652 5 Packing, Corner Post 130759 6 Packing, Crease Sheet 196633 7

Packing, End Cap, AM-5



139955 8 Bracket, Mounting, Series II Bass Module 259830 9 Bag, Poly, 14.38 x 9.87 x 2 mil 103351

10 Hardware Kit, Installation, Bass Module 259831 11 Card, Registration and Warranty 262933 12 Sheet, Installer’s Guide, Bass Module 259824 13 Carton, Series II Bass Module 259826-001

(2)

(4)

(2)

Note: The BUILT-INvisible Series II Bass Module is non-repairable.

SE-1 AUDIO/VIDEO SWITCHER

Item

Description Part Number Qty.

Number

1 POWER PACK, 12 VDC, 500 mA VENDOR SUPPLIED 1 2 CABLE ASSY, IR SENSOR 260074-1 1 3 CABLE ASSY, SOURCE, 7 FT. 257180 1 4 CABLE ASSY, 3.5mm TO 8 PIN MINI DIN, 6 FT. 261489 1 5 CABLE ASSY, S-VIDEO, 6 FT. VENDOR SUPPLIED 1 6 CABLE ASSY, COMPOSITE VIDEO, 6 FT. VENDOR SUPPLIED 1 7 CABLE ASSY, DIG AUDIO, RCA TO RCA, 6 FT. VENDOR SUPPLIED 1 8 SE-1 AUDIO/VIDEO SWITCHER, GRAY 260047 1 9 SE-1 INSTALLATION GUIDE 262007 1

CTL

Bubble Wrap (vendor supplied)

Product Carton (vendor supplied)

Figure 5. SE-1 Audio/Video Switcher Packing Diagram

CI-1 CONTROL INTEGRATOR

Item

Description Part Number Qty.

Numbe

1 POWER PACK, 12 VDC, 500 mA VENDOR SUPPLIED 1 2 CABLE ASSY, IR SENSOR 260074-1 1 3 CABLE ASSY, SOURCE, 3.5mm to 3.5mm, 6 FT. 260073 1 4 CABLE ASSY, SOURCE, 3.5mm to 3.5mm, 7 FT. 260075 1 5 CI-1 CONTROL INTEGRATOR VENDOR SUPPLIED 1 6 CI-1 INSTALLATION GUIDE 261488 1

Bubble wrap (vendor supplied)

Product carton (vendor supplied)

Figure 6. CI-1 Control Integrator Packing Diagram

CD-20 Music Center

to PC

COMM

port

TAP

cable

IR Sensor

Appendix

Bose

Digital

Source

plate

S/PDIF cable

CAT-5

cable

Convertor

75 Ohm

A/D

Audio Signal

Generator

TA-1 Amplifier

BOSE

Resistors

Load

150W

Bass channel

50W

Surround channels

50W

Center channel

50W

Left and Right

Front channels

9 Pin D-sub

connector

Ant/Dtr

gnd

port

786

PC to TA-1 amplifier

cable connections

serial data

COM

gnd

to PC

TA-1 J8

connector

wiring

Figure 7. TA-1 Amplifier Test Setup Diagram

connector

wiring

TA-1 J9

Appendix

MUSIC AUDIO

INPUT

BALANCED/

UNBALANCED

INPUT SWITCH

VIDEO

AUDIO

INPUT

RS-232 SERIAL

DATA

INPUT

SPDIF

INPUT

(DIGITAL

AUDIO)

LEFT +

LEFT -

GROUND

RIGHT +

RIGHT -

LEFT +

LEFT GROUND

RIGHT +

RIGHT Rx

GND

2/ORANGE

1/BLUE

3/GREEN

4/BROWN

IR+

J6-1

J6-2

J6-3

J6-4

J6-5

J21-1

J21-2 J21-3

J21-4

J21-5

J9-1

J9-2

J9-3

J7-1 J7-2

J7-3

J7-4 J7-5

J7-6 J7-7 J7-8

J10-1

J12-4

J12-3

J12-2

J12-1

J13-2

J13-1

J14-4

J14-3

J14-2

J14-1

RED

BLACK

RED

BLACK

4 3 2 1

RED

BLACK

RED

BLACK

RED

BLACK

LEFT FRONT SATELLITE

RIGHT FRONT SATELLITE

SPEAKER SELECTOR SWITCH S4

CENTER SATELLITE

LEFT SURROUND

RIGHT SURROUND

SENSOR

INPUT

MUSIC

CENTER

SENSE

IR-

IR SENSOR

+5V

GND

TURN ON/Rx

SPKR DATA/Tx

ANT/DTR

GND

+8V

GND

J10-2

J10-3

J10-4

J10-5

J8-1

J8-2

J8-3

J8-4

J11-1

J11-2

J11-3

J15-2

J15-1

RED

BLACK

Figure 8. TA-1 Amplifier Connection Diagram

BASS MODULE

AEQ EXT NORMAL/LS IND SRC

Appendix

LED Function Description

The TA-1 theater amplifier has 4 LEDs that are used to indicate various settings and states.

LED Color Description

ON Green On when the amplifiier has been powered up from any power

command (IR, music center, etc.)

Standby/ Yellow Double function LED. Command Standby function: On when AC is available at the amplifier but

a power command has not been received (ON LED is off). Turns off when it leaves stanby mode (ON LED is on). Command function: Blinks as follows:

 1 blink: music center command  2 blinks: IR command  3 blinks: serial command

Setup/ Double function LED. Analog Input Yellow Setup function: Blinks when the speaker selector switch does

not match the current EQ setting, as shipped from the factory. Off when a new EQ setting has been accepted and the unit has powered first off, then on again.

Analog input indication: Blinks in response to a command to change the selected input source to music or video.

 1 blink indicates the music input is selected  2 blinks indicate the video input is selected

Fault/ Red Double function LED. Digital Input Fault function: Flashes a number to indicate the location of a

fault condition.

Digital input indication: Flashes 1 to 4 times to indicate which of the 4 digital inputs is selected. No flash after a source command is issued indicates that the digital input is disabled.

Bass and treble controls

The bass and treble controls are available as IR and serial commands only. There are three commands for each control: up, down and flat. The 16 levels for each one range from 8 up to 8 down.

These controls are for room-specific equalization only. They are not intended to be adjusted by the customer. They are normally set once by the system installer and then left at that setting for that installation. These commands are not supported on the Bose® TA-1 IR remote control. You must use either a Phillips Pronto remote control that has been programmed for use with the TA-1 or use serial data commands through an IBM compatible PC.

Appendix

Switches

There are three sets of switches on the TA-1 amplifier; the speaker selector set, the mode set, and the balanced input set.

Speaker selector switches

These switches are used to set the EQ for various speaker configurations. Refer to "Setting the speaker configuration DIP switches" on the next page for the settings for each speaker configuration.

Mode switch

AEQ Future use

EXT Down for Aux mode

Normal/LS Set to the UP position for normal mode.

Set to the DOWN position for the Lifestyle® system mode.

IND SRC Moving this switch, either up or down, will instruct the TA-1 theater amplifier to

provide source indication on the analog and digital input LEDs.

Balanced input switch

The TA-1 amplifier has a set of switches located between the MUSIC and VIDEO analog inputs. The left switch shorts the negative inputs of the MUSIC input together. The right switch shorts the VIDEO negative inputs together. These switches can be changed, as necessary, when balanced sources are used.

In the down position, they short L- to R- (default). In the up position, 2 separate negative inputs are provided and should be connected to the negative outputs of the balanced source - assuming you have a balanced source. Do not short the negative inputs together with a jumper wire if you are using an unbalanced source. Instead, put the switch in the down/unbalanced position this will short the negative inputs together eliminating the need for the jumper wire.

Setting the speaker configuration DIP switches

When first connected to power, the TA-1 theater amplifier is in the "setup mode", as indicated by the flashing SETUP LED. In this mode the system is operational, but the EQ for the speakers will not necessarily be correct. To correct the EQ and exit this mode, you must set the DIP switches on the amplifier to the proper EQ for the speaker configuration you have chosen.

To set the EQ

1. Set the SPEAKER SELECTOR DIP switches as shown below for the speaker configuration installed. For example: if you are using all CS-2 speakers, select Configuration 3 by setting the SPEAKER SELECTOR DIP switch 3 to the up position.

2. Cycle the AC power to the TA-1 amplifier.

Appendix

Setting the speaker configuration DIP switches (continued)

Important: Be sure to select the right settings for the speaker configuration you are using from

the table below. If an error is made, the speakers will have the wrong equalization and will not sound right when played.

Configuration Left & Right Center Surround Settings

Unconfigured None None None

1 Jewel Cube

Jewel Cube Jewel Cube

speaker speaker speaker

2 Jewel Cube Jewel Cube 102® series*

speaker speaker speaker

3 CS-2 cube CS-2 cube CS-2 cube

speaker array speaker array speaker array

4 CS-2 cube CS-2 cube 102 series

speaker array speaker array speaker

5 CS-2 cube VCS-10

CS-2 cube

speaker array speaker speaker array

6 131®-R 131-R 102 series

speaker speaker speaker

7 131-R VCS-10 102 series

speaker speaker speaker

*102 series speakers include the 102SE, the 131-R and the Model 32-R.

Table 1. Satellite Speaker EQ DIP Switch Settings

After setting the speaker configuration, changing it will cause the SETUP LED to flash continually to indicate that the current EQ does not match the switch settings. To set the EQ to the new switch settings and stop the flashing, cycle the AC power to the TA-1 amplifier.

Appendix

Computer Setup Procedure

Use this procedure to configure your IBM compatible PC for communication with the digital bass module.

1. Open a terminal window, as shown at right, in either Terminal or Hyperterm, as applicable for the version of Microsoft Windows® you are using on your PC.

2. In the terminal window, click on File, then Properties. Set the Test Properties in the dialog box as shown at right.

3. In the Test Properties dialog box shown in step 2, click on Configure to set the COM 1 Properties as shown at right. Click OK to return to the Test Properties dialog box.

See the next page for the conclusion of this procedure.

Appendix

Computer Setup Procedure (continued)

4. In the Test Properties dialog box, click on the

Settings tab and set the controls as shown in the example at right. Note: Be sure to check “Beep three times when connecting or disconnecting”.

5. In the Test Properties dialog box under the settings tab, click on the ASCII Setup button and set the controls to look like the dialog box at right. Click OK to return to the Test Properties dialog box.

6. Once you have made all of the settings in the Test Properties dialog box, click OK to close it. You have now configured your PC to communicate with the TA-1 amplifier. To connect to the module under test, in the terminal window, click on Call, then Connect, and listen for 3 beeps. This will tell you that the PC is connected to communicate with the module.

Appendix

Amplifier Firmware Upgrade Procedure

TAP Cable build instructions

Obtain a female DB9 9 pin D-Sub connector. Obtain a 3 pin connector, part number 172930-3. This is the same connector as used for the Serial I/O and TV Sense inputs to the TA-1 amplifier. Obtain 3 different colored 18 AWG wires. Twist them together to reduce induced noise into the cable. Connect/solder the three wires as listed below.

This would be the part

of the connector where the

wires are soldered on

6789

END VIEW (FRONT)

This would be the part

of the connector that

plugs into the computer

12345

REAR VIEW (BACK)

Cable: DB9 female to 3-pin plug. DB9-3 -> 1 (amplifier Rx) DB9-5 -> 2 (amplifier Gnd) DB9-2 -> 3 (amplifier Tx)

Establishing Serial Communication with the amplifier

1. Set up your IBM compatible PC as shown in the Computer Setup Procedure in the Appendix of this manual.

2. Connect the test cable to the TA-1 amplifier at J9. Connect the DB-9 connector to the serial data port on the the IBM PC that you configured in step 1.

3. Open the connection you have set up in the Hyperterm window.

4. Once connected, power up the TA-1 amplifier. You should see: *D0B or a similar response.

If you do not, there could be a cabling problem.

5. Press Enter and you should see the TA-1 amplifier respond with a ‘>’.

Downloading New Firmware to the amplifier

1. Leave the PC connected to the TA-1 amplifier.

2. Remove AC power to the TA-1 amplifier.

3. Short the IR “IN” to ground with a jumper.

4. Return AC to the TA-1 amplifier. This time when you power up the TA-1 amplifier you should not see any serial messages.

5. Select Transfer, Send Text File, and select the correct hex file (the version you want to upgrade to.) You will need to change the Files of type to “All files” to “see” the .hex file.

6. Immediately after selecting the file, it will be downloaded to the TA-1 amplifier but you will not

see any activity. Be patient, this will take a little over 30 seconds.

7. At the completion of the download you should see many “.”s followed by a “+”. Wait for the “+” before proceeding. You may see a batch of “.”s without the “+”. This first set of “.”s will be followed eventually with a “+”.

8. Remove the shorting wire and cycle the AC power to the TA-1 amplifier. Press return and then “V<cr>”. This will show the firmware version and date. The version should match the one you just loaded (e.g. 2C for dh2c.hex).

Appendix

TAP Commands Table

These commands are used to control the TA-1 amplifier. You will need to configure your IBM compatible PC for a hyperterminal session as outlined earlier in the appendix. You will also need to construct a TAP cable using the instructions on the previous page.

Command Format

Command: single ASCII character (case sensitive) Argument: 0-5 ASCII characters, command dependant Delimiter: <CR>

Serial Commands to the TA-1 amplifier

Description Cmnd Arg Arg Values Action Notes/Examples

IR code emulation

Smart Speaker code emulation

Set TA-1 volume directly to maximum

Bypass RS232 code to the DSP PCB

Pass character to the DSP PCB

Character Echo Enable or Disable

I nn nn = 00 – ff Emulates as an

IR code received

S hhn or

hhnmm

S 31101 The command

B en Only ‘en’ letters

P c C = any ASCII

C p P = 0,1 Enables or

h,n,m = 0 – f hh=header code n=command code mm=extended command code

S31101 set the volume directly to maximum.

are valid

character

Emulates as a Smart Speaker code received from a Lifestyle head unit

Connects RS232 port to the DSP PCB serial port with software

Pass the ASCII parameter to the DSP PCB

disables Echo

IC0 acts the same way as VOLUME UP command from the IR receiver. See the IR Commands table for a listing or IR codes. S312 acts as VOLUME DOWN arrived from LS. S31127 acts as DIRECT VOLUME 27 arrived from LS (extended Smart Speaker command). 01 is the dB of output attenuation. Use any number between 01 and 80. 01 is max volume. 80 is minimum. Enables direct communication with the DSP PCB. The only way to resume normal operation: send ‘Ctrl-s’ for software restart. p<CR> will send a CD (==0x0D) to the DSP PCB. pA<CR> will pass ‘A’ to the DSP PCB. C1<CR> = Echo enabled (default) C0<CR> = Echo disabled

Appendix

Serial Commands to the TA-1 amplifier (continued)

Description Cmnd Arg Arg Values Action Notes/Examples

Ack enable or disable

Enable TA-1 responses

Disable TA-1 responses

Lifestyle command disable

Remote input disable

TV sensor ON or OFF



A p P = 0,1 Enables or

disables Command Acknowledgem ents

E nn nn = 00-FF Enables

selected DBIS responses

D nn nn = 00-FF Disables

selected DBIS response

L p P = 0,1 Disables Smart

Speaker commands from LS

R p P = 0,1 Disables input

from IR remote

T p P = 0,1 Software TV

sensor

A1<CR> = Acknowledge enabled A0<CR> = Acknowledge disabled Acknowledge = ‘>’ if cmnd ok Acknowledge = ‘?’ if bad cmnd Bit 0 = DIP switch change detect Bit 1 = 1 Enables TV detection response Bit 2 = 1 Enables IR response Bit 3 = 1 Enables LS command response Bit 4 = 1 Enables error status response Bit 5= 1 Enables DSP PCB msg response Bit 6 = 1 Enables DSP PCB status response Bit 0 = DIP switch change detect Bit 1 = 1 Disables TV detection response Bit 2 = 1 Disables IR response Bit 3 = 1 Disables LS command response Bit 4 = 1 Disables error status response Bit 5= 1 Disables DSP PCB msg response Bit 6 = 1 Disables DSP PCB status response L0<CR> = LS enabled (default) L1<CR> = LS disabled

R0<CR> = Remote enabled (default) R1<CR> = Remote disabled T1<CR> = simulates TV sensor ON T0<CR> = simulates TV sensor OFF

Appendix

Serial Commands to the TA-1 amplifier (continued)

Description Cmnd Arg Arg Values Action Notes/Examples

Version display

Display serial number Plant Code and Date of Manufacture (DOM)

Serial Commands from the TA-1 amplifier

Description Cmnd Arg Arg Values Action Notes/Examples

DIP switch detection

TV detection

IR command received Lifestyle command received

Error result E nn nn = 00-ff Error E00 = no error

DSP PCB RS232 message received DSP PCB status changed

V none Displays

software version

N <CR> Five character

serial number (ASCII)

X <CR> Five character

(ASCII)

D nn nn = 00-FF S3..S6 DIP

TON or

OFF

I nn nn = 00-FF IR command

L hhn or

hhnmm

M c C=1 ASCII

S nn nn = 00-ff Bit0=0 DC offset signal

ON or OFF Television

h,n,m = 0 – f hh = header code n = command code mm = extended command code

character

Displays unit serial number

Displays plant code and DOM

switch change detection

detection change

received

LS command received

V<CR> Displays software version number N<CR> Displays serial number

X<CR> Displays P and D codes

Dnn = the new value of the DIP switches

Ton = TV detector on Tof = TV detector off

I02 = IR VOLUME DOWN command received LS312 LS VOLUME DOWN Smart Speaker code received

E01 = Amp. turn on failed C = ‘1’ character came from the DSP PCB

OFF Bit1=0 DSP shutdown OFF Bit2..7 Free

IR Commands Table

Appendix

DATA

(HEX)

00 1 22 37 4 80 2 Mute A2 38 5 40 3 Vol Down 62 39 6

C0 4 Vol Up E2 40 7

20 5 1:5 On 12 41 8

A0 6 1:5 Off 92 42 9

60 7 AM/FM 52 43 Random disc

E0 8 Mute Off D2 44 Stereo

10 9 Center - 32 45 Off 90 10 Center + B2 46 Treble Middle 50 11 Surround - 72 47 Surround

D0 12 Surround + F2 48 Stereo + Center

30 13 AM 0A 49 Treble +

B0 14 MC Video 2 8A 50 Treble -

70 15 MC Video 1 4A 51 Tape F0 16 Aux CA 52 CD 08 17 FM 2A 53 Disc 88 18 Digital 1 AA 54 Play 48 19 Digital 2 6A 55 Pause

C8 20 Digital 3 EA 56 Fast Rev

28 21 Digital 4 1A 57 Fast Fwd

A8 22 Digital 0 9A 58 DRC On

68 23 1:5 Toggle 5A 59 FEQ Toggle

E8 24 DRC Toggle DA 60 Bass Middle

18 25 Skip Rev 3A 61 Random 98 26 Skip Fwd BA 62 Disc + 58 27 CD Stop 7A 63 Bass +

D8 28 CD Play/Pause FA 64 Bass -

38 29 Video 5 F3 N/A FEQ On

B8 30 AM/FM Preset + F4 N/A FEQ Off

78 31 DRC Off F5 N/A TV On F8 32 AM/FM Preset - F6 N/A TV Off 02 33 0 F7 N/A Center level middle 82 34 1 F9 N/A Surround level middle 42 35 2 FB N/A Mute all

C2 36 3

Index/

NEC

KEY #

Description IR

DATA (HEX)

Index/

NEC

KEY #

Description

Appendix

System Troubleshooting Information

Use the table below to troubleshoot SE-1 system expander setup problems. Keep in mind that a symptom listed near the end of this table may be caused by problems addressed earlier in the table.

Symptoms Possible cause What to check or try

All LEDs are off No power to the amp.

If there is power to the amp, the standby LED should be on. (If the amp has received an ON command, the ON LED will be lit instead.)

Setup LED is flashing This is normal when

the EQ in use does not match the speaker configuration set by the speaker selector switch.

Setup LED is on This is a special

setup mode.

Won’t turn on Amplifier

malfunctioning

Won’t turn on Not receiving an ON

command

Not responding to commands from the SE-1 system expander or CI-1 control integrator. Not responding to IR commands while using the modulated IR input.

No digital audio

Wiring problem

Wiring problem or interference

• Power cord connected at the amp and the AC outlet.

• AC power switch (bottom of amp beside power cord)

is in the ON position.

• AC power is available at the outlet.

• The speaker selector switches are set to a valid

speaker configuration.

• That the power has been cycled after the speaker

configuration was changed in order for the change to take effect.

• Remove the IR input connector, then cycle the power

to the amp. The LED should turn off. Reconnect the IR input connector and cycle the power to the amp again. If the LED comes on steady again, you have a problem with wiring to the IR sensor input.

• Short +8V on the TV sensor input to the TV sensor

ON input. The ON LED should illuminate and the amp should come on. This will verify that the amp is working. Be sure to remove the short after this test.

• Use an IR remote and send an ON command (TV ON,

any music center command) through the vent holes in the bottom of the chassis. This will verify that the amp is responding to IR commands.

• Connect the music center and press a source button

(Video 1, AUX, etc.) on the RF remote. This will verify that the amp is responding to music center commands.

• Serial input connector is wired correctly.

• Source plate (regular or digital) is wired correctly.

• SE-1 system expander or CI-1 control expander is

plugged into the correct jack on the source plate.

• Positive output of the IR distribution system connected

to positive modulated IR input on the TA-1 amplifier, and negative output is connected to the TA-1 amp’s negative input. Do not connect the negative output to ground.

• None of the sensors are saturated with light.

• Digital source connected to the correct input on the

digital source plate.

• The CAT-5 cable is connected between the digital

source plate and the TA-1 amplifier.

• The CAT-5 cable is properly terminated according to

the color coding.

• The TA-1 amplifier has selected the appropriate input.

Appendix

System Troubleshooting Information (continued)

Symptoms Possible cause What to check or try

Amp responds to volume buttons (command LEDs blink) but there is no sound Amp is on, but no sound

Amp is on; it has selected the correct input, but no sound Hum Differential input

IR macro doesn’t always work Amp won’t turn off Only turns off when

Amp may be off. The amp will not respond to volume commands unless it is on.

Wrong input selected

Muted or source problem

switches in the wrong position Commands are too close together

the music center is off and the TV source has issued an OFF command

An ON command has been issued.

•

Use the IND SRC switch to determine which input the

•

amp has selected. The source is wired correctly, is on, and is playing.

•

Power the music center off, then on.

•

Differential input switches between the video and

•

music inputs.

Insert small delays (.1s) between commands.

•

Turn off the music center.

•

Issue TV OFF command.

•

TV sensor is off.

•

TA-1 Home Theater Amplifier Installation Notes

The TA-1 Home Theater amplifier is typically installed in 3 different configurations, which correspond to three different levels of complexity and system price points. These three configurations are referred to as the TS-200, TS-400 and TS-600 systems. The connection details for each of these are shown in Figures 9, 10 and 11 on the following pages. The table below gives an overview of the three systems.

Basic system

configurations

Lifestyle

music center

TS-200 system None TA-1 IR remote + TV

TS-400 system CD-20 Phillips Pronto or other

TS-600 system CD-50 Phillips Pronto or other



Home theater remote Video

switching

Additional

music zones

TV 0 remote. A single learning remote can also be used instead.

TV 1 programmable IR remote.

3 programmable IR remote.

SE-1

system

expander

Figure 9. TS

-200 S

ystem

C o

nnectio

n D etails

F igu

re 10.

-400 S

ystem

C o

nnectio

n D etails

Figure 11. TS-600 S

ystem

C onnection D

etails

BUILT-INvisible® TA-1 Theater Amplifier

2002 Bose Corporation

Service Manual

Part Number 263494 Rev. 00

SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE

Bose Corporation The Mountain Framingham Massachusetts USA 01701

P/N: 263494 Rev. 00 6/2002 (H) FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-233-4408 http://serviceops.bose.com

BOSE BUILT-INVISIBLE TA-1 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

SAFETY INFORMATION

WARRANTY

SPECIFICATIONS

SPEAKER EQ CURVES

THEORY OF OPERATION

DISASSEMBLY/ASSEMBLY PROCEDURES

TEST PROCEDURES

PART LIST NOTES

Figure 1. Input/Output PCB, DSP PCB and Chassis Exploded View

Figure 2. Amplifier PCB Assembly with Heatsink Exploded View

Figure 3. Assembled Amplifier with Heatsink Open

DSP PCB ELECTRICAL PART LIST

AMPLIFIER PCB ELECTRICAL PART LIST

Figure 4. Digital BUILT-INvisible System Packaging View

INTEGRATED CIRCUIT DIAGRAMS

Appendix

Accessories used with the TA-1 amplifier

CD-50 SYSTEM ASSEMBLY PART LIST

SE-1 AUDIO/VIDEO SWITCHER

Figure 5. SE-1 Audio/Video Switcher Packing Diagram

CI-1 CONTROL INTEGRATOR

Figure 6. CI-1 Control Integrator Packing Diagram

Figure 7. TA-1 Amplifier Test Setup Diagram

Figure 8. TA-1 Amplifier Connection Diagram

Table 1. Satellite Speaker EQ DIP Switch Settings

Computer Setup Procedure

Amplifier Firmware Upgrade Procedure

System Troubleshooting Information