Panasonic SAAK-960-GCP Service manual

CD Stereo System

SA-AK960GCP

Colour

(K)... Black Type

ORDER NO. MD0707023CE

Notes: This model’s CD mechanism changer unit is CRS1. Please refer to the original Service Manual (Order No. MD0509368C0) for this mechanism.

Specifications

AMPLIFIER SECTION

RMS output power

Front Ch 200 W per channel (7 Ω), 1 kHz,

10% THD

Subwoofer Ch 240 W per channel (7 Ω), 1 kHz,

10% THD

otal RMS Dolby Digital Mode

power

PMPO output power 10000 W

FM/AM TUNER, TERMINALS SECTION

Preset station FM 20 stations

FrequencyModulation (FM)

Frequencyrange 87.50 to 108.00 MHz

Sensitivit

880 W

AM 15 stations

(50 kHz step)

4.0 µV (IHF)

S/N 26 dB 2.2 µV

Antenna terminal(s) 75 Ω (unbalanced)

Amplitude Modulation (AM)

Frequency range 522 to 1629 kHz (9 kHz step)

520 to 1630 kHz (10 kHz step)

Sensitivity S/N 20 dB (at 999 kHz) 1000 µV/m

Phone jack

Terminal Stereo, 3.5 mm jack

MIC jack

Sensitivity 0.7 mV, 1.2 kΩ

Terminal Mono, 3.5 mm jack (1 system)

Music Port (Front)

Sensitivity 100 mV, 4.7 kΩ

Terminal Stereo, 3.5 mm jack

USB Port

SA-AK960GCP

USB standard USB 2.0 full speed

Media file format support MP3 (*.mp3)

USB device file system FAT12, FAT16, FAT32

USB port power 500 mA (Max)

I CASSETTE DECK SECTION

Track system 4 track, 2 channel

Heads

Record/playback Solid permalloy head

Erasure Double gap ferrite head

Motor DC servo motor

Recording system AC bias 100 kHz

Erase system AC erase 100 kHz

Tape speed 4.8 cm/s

Overall frequency response (+3 dB, -6 dB) at DECK OUT

NORMAL 35 Hz to 14 kHz

S/N Ratio 50 dB (A-WTD)

Wow and flutter 0.18% (WRMS)

Fast forward and rewind time Approx. 120 seconds with

C-60 cassette tape

I DISC SECTION

Disc played [8 cm or 12 cm]

CD, CD-R/RW (CD-DA, MP3 *)

*MPEG-1 Layer 3, MPEG-2 Layer 3

Pick up

Wavelength 785 nm

Laser power CLASS 1

Audio output (Disc)

Number of channels (FL, FR, SL, SR, SW) 4.2 ch

Audio performance (measurement at: CD out terminal)

Frequency response (CD-Audio) 4Hzto20kHz

S/N ratio (CD-Audio) 95 dB

Dynamic range (CD-Audio) 93 dB

Total harmonic dist. (CD-Audio) 0.005%

I GENERAL

Power supply AC 110 to 127/220 to 240 V,

50/60Hz

Power consumption 235 W

Dimensions (W x H x D) 250 x 331.5 x 358 mm

Mass 8.3 kg

Operating temperature range +5 to +35°C

Operating humidity range 5 to 90% RH (no condensation)

Power consumption in standby mode

I SYSTEM

SC-AK960 (GCP) Music center: SA-AK960 (GCP)

(SF-AK960GCP) Front speakers: SB-PF960 (GCP)

Surround speakers: SB-PS960 (GCP)

Subwoofer: SB-WAK960 (PL)

Subwoofer: SB-WAK860 (GCP)

For Information on speaker system, plesae refer to the original Service Manual (Order No. MD0707024CE) for SB-PF960G CP-K, (Order No. MD0707025CE) for SB-PS960GCP-K, (Order No. MD0707026CE) for SB-WAK960PL-K & (Order No. MD0707022CE) for SB-WAK860GCP-K.

This model uses CRS1 mechanism (CD changer mechanism)

Note:

1. Specifications are subject to change without notice. Mass and dimensions are approximate.

2. Total harmonic distortion is measured by the digital spectrum analyzer.

0.99 W (Approx.)

CONTENTS

Page Page

1 Safety Precautions

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

3 Precaution of Laser Diode

4 Handling Precautions For Traverse Unit

5 Handling the Lead Free Solder

6 Accessories

7 Operation Procedures

8 New Features

9 Self diagnosis and special mode setting

10 Assembling and Disassembling

11 Service Position

12 Adjustment Procedures

13 Voltage Measurement & Waveform Chart

14 Wiring Connection Diagram

15 Block Diagram

16 Notes Of Schematic Diagram

17 Schematic Diagram

18 Printed Circuit Board

19 Illustration of IC’s, Transistors and Diodes

20 Terminal Function of IC’s

21 Troubleshooting Flowchart (CD Section Circuit)

22 Exploded Views

23 Replacement Parts List

100

103

105

109

SA-AK960GCP

1 Safety Precautions

1.1. General Guidelines

1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.

2. After servicing, ensure that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

3. After servicing, check for leakage current checks to prevent from being expose d to shock hazards.

1.1.1. Leakage Current Cold Check

1. Unplug the AC cord and connect a jumper between the two prongs on the plug.

2. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the chassis, the reading should be between 1MΩ and 5.2Ω. When the exposed metal does not have a return path to the chassis, the reading must be

1.1.2. Leakage Current Hot Check

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15µF capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1.

3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.

4. Check each exposed metallic part, and measure the voltage at each point.

5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.

6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. should the measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is returned to the customer.

Fig. 1

SA-AK960GCP

1.2. Before Use

Be sure to disconnect the mains cord before adjusting the voltage selector.

Use a minus(-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit

will be used. (If the power supply in your area is 110V or 120V, set to the “127V” position.)

Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries, the correct voltage is already set.)

1.3. Before Repair and Adjustment

Disconnect AC power, discharge Power Supply Capacitors C5104, C5171, C5172, C5920, C5940 and C5950 through a 10Ω,1W resistor to ground.

DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.

After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

• Current consumption at AC 110 - 127 V, at 60 Hz in NO SIGNAL mode (at volume min in CD mode) should be ~500 mA.

• Current consumption at AC 220 - 240 V, at 50 Hz in NO SIGNAL mode (at volume min in CD mode) should be ~350 mA.

1.4. Protection Circuitry

The protection circuitry may have operated if either of the following conditions are noticed:

• No sound is heard when the power is turned on.

• Sound stops during a performance.

The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are "shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.

If this occurs, follow the procedure outlines below:

1. Turn off the power.

2. Determine the cause of the problem and correct it.

3. Turn on the power once again after one minute.

Note:

When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.

1.5. Safety Part Information

Safety Parts List:

There are special components used in this equipment which are important for safety.These parts are marked by Schematic Diagrams & Replac ement Parts List. It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of manufacturer.

Table 1

Reference No. Part No. Part Name & Description Remarks F1 K5D502BLA013 FUSE [M] F2 K5D312BLA015 FUSE [M] JK5950 K2AA2B000011 JK AC INLET [M] T5950 G5CYBYY00006 MAIN TRANSFO RMER [M] T5951 G4C2AAJ00005 SUB TRANSFORMER [M] A2 K2CQ2CA00006 AC CORD [M] RL5950 K6B1AEA00003 PC POWER RELAY [M] L5950 ELF15N035AN LINE FILTER [M] Z5950 ERZV10V511CS ZENER [M] S5950 K0ABLB000003 SW VOLTAGE SELECTOR [M] 360 RAE0165A-V TRAVERSE UNIT [M] FP5950 K5G402AA0002 FUSE PROTECTOR [M]

in the

SA-AK960GCP

2 Prevention of Electro Static Discharge (ESD) to

Electrostatically Sensitive (ES) Devices

Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the inciden ce of component damage caused by electro static discharge (ESD).

1. Immediately before handlin g any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your body by touchin g a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applyin g power to the unit under test.

2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as aluminium foil, to prevent electrostatic charge build up or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can generate electrical charge to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

Caution

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize body motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

SA-AK960GCP

3 Precaution of Laser Diode

CAUTION:

This unit utilizes a class 1 laser diode in the optical pickup unit.

Invisible laser radiation is emitted from the optical pickup lens.

Wavelength: 785 nm

When the unit is turned on:

1. Do not look directly into the pick up lens.

2. Do not use optical instruments to look at the pick up lens.

3. Do not adjust the preset variable resistor on the pickup lens.

4. Do not disassemble the optical pick up unit.

5. If the optical pick up is replaced, use the manufacturer’s specified replacement pick up only.

6. Use of control or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

CAUTION!

THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

I Use of Caution Labels

SA-AK960GCP

4 Handling Precautions For Traverse Unit

The laser diode in the traverse uint may break down due to potential difference caused by the static electricity of clothes or our human body.

So, be careful of electrostatic breakdown during repair of the traverse unit.

• Way of handling the traverse unit

1. Do not subject the traverse unit to static electricity as it is extremely sensitive to electrical shock.

2. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board).

3. Do not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish the job in as short time as possible.

4. Do not turn the variable resistor for laser power adjustment. (It is pre-adjusted during production time)

Fig 4.1

Grounding for electrostatic breakdown preven tion

1. Human body grounding

Use the anti-static wrist strap to discharge the static electricity from your body.

2. Work table grounding

Put a conductive material (sheet) or steel sheet on the area where the traverse unit is place, and ground the sheet.

Caution :

The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch the traverse unit.

Caution when replacing the Traverse Unit

The traverse unit has a short point shorted with solder to protect the laser diode against electrostatics breakdown. Be sure to remove the solder from the short point before making connections.

SA-AK960GCP

Fig 4.2

SA-AK960GCP

5 Handling the Lead Free Solder

5.1. General description about Lead Free Solder (PbF)

The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation.

The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin (Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that of the normal solder.

Definition of PCB Lead Free Solder being used

The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder. (See right figure)

Service caution for repair work using Lead Free Solder (PbF)

• The lead free solder has to be used when repairing the equipment for which the lead free solder is used.

(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)

• To put lead free solder, it should be well molten and mixed with the original lead free solder.

• Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.

• Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt

the lead free solder.

• Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30

degrees C (662±86°F).

Recommended Lead Free Solder (Service Parts Route.)

• The following 3 types of lead free solder are available through the service parts route.

RFKZ03D01K-----------(0.3mm 100g Reel)

RFKZ06D01K-----------(0.6mm 100g Reel)

RFKZ10D01K-----------(1.0mm 100g Reel)

Note

* Ingredient: Tin (Sn), 96.5%, Silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%

SA-AK960GCP

6 Accessories

Note : Refer to Replacement Parts List (Section 23) for the part number.

Remote

Control

AC Cord

FM Indoor

Antenna

AM Loop Antenna

Power Plug

Adaptor

7 Operation Procedures

7.1. Main Unit Key Buttons Operation

SA-AK960GCP

7.2. Remote Control Key Buttons Operation

7.3. Disc Information

8 New Features

8.1. Using the Music Port and Connecting & Playing a USB Mass Storage

Class Device

SA-AK960GCP

9 Self diagnosis and special mode setting

This unit is equipped with features of self-diagnostic & special mode setting for checking the functions & reliability.

9.1. Service Mode Summary Table

The service modes can be activated by pressing various button combination on the main unit and remote control unit.Below is the summary for the various modes for checking:

Player button Remote control button unit Application Note

[ ] [4], [7] Entering into Doctor Mode Refer to the section,

Mode Remote control button unit Application Note

In Doctor Mode [ ], [4]+[7] Display firmware version & EEPROM checksum Refer to the section,

[4] Set for cold start when reset start is executed the next time Refer to the section,

[Muting] Clock Setting Refer to the section,

[0] Tape Eject Test Refer to the section,

[DIMMER] All segment display for the FL Refer to the section,

[DISC] CRS1 Inspection Refer to the section,

[7] Volume 50 Setting check Refer to the section, [8] Volume 41 Setting check [9] Volume 35 Setting check

“9.2.1 Service Mode Table 1 for more information.

“9.2.1 for more information.

“9.2.2 for more information.

“9.2.3 for more information.

“9.2.2 for more information.

“9.2.3 for more information.

9.2. Service Mode

9.2.1. Service Mode Table 1

Item FL Display Key Operation

Mode Name Description Front Key

Self -Diagnostic Mode

To enter into self diagnostic checking for main unit.

1. Select [TAPE, ] for TAPE mode (Ensure

2. Press and hold [STOP, I] button follow by

To exit, press [ unit or remote control.

no TAPE inserted).

[

, POWER] button on main

SA-AK960GCP

Item FL Display Key Operation

Mode Name Description Front Key

Doctor Mode To enter into Doctor

Mode for checking of various items and displaying EEPROM and firmware version.

Note: The microprocessor version as shown is an example. It will be revise when there is an updates.

(Display 1)

In CD Mode:

1. Press [STOP, I] button on main unit follow by [4] and [7] on remote control.

To exit, press [ENTER] button on remote control or press [

, POWER] button on main

unit or remote control.

FL display sequence Display 1 → 2

1. The Check Sum of EEPROM and firmware version will be display

* ROM correction. ** Firmware version No:

checksum : (Condition 1)

(a) If there is NO EEPROM header string OR (b) If there is no EEPROM ( no data is

received by micro-processor) [NO] is displayed.

checksum : (Condition 2)

If the version of the EEPROM does not match or not working properly [NG] is display.

checksum : (Condition 3)

If the EEPROM version matches, checksum [YYYY] is displayed.

(Display 2)

9.2.2. Service Mode Table 2

Item FL Display Key Operation

Mode Name Description Front Key

CD Test Mode Checking of CD

CD Auto Adjustment

Operation.

To check the CD auto adjustment result for FLOCK, TLOCK and CLVS. FLOCK: Focus Lock. TLOCK: Traverse Lock. CLVS: Constant Linear Velocity Speed.

In CD mode:

1. Select [CD,

2. Press and hold [STOP, I] button for 3

To exit, press [ unit or remote control.

In CD Test mode:

1. Press [0] button on remote control.

To exit, press [ENTER] button on remote control or press [ unit or remote control.

/ ] for CD mode.

seconds follow by [

, POWER] button on main

SA-AK960GCP

CD Changer Reliability Test (CRS 1)

Service Mode (For traverse unit)

CD changer unit Open / Close Test

Tape Eject Test To check on the tape

FL Display Test To check the FL

To determine the reliability of CD Loading Unit. (For more information, refer to section 9.2.4)

To unlock the traverse unit for service. FL display sequence Display 1 → 2

To check the function operation of changer unit. (For more information refer to 9.2.4)

eject function (For deck 1/2)

segments display (All segments will light up and LED will blink at 0.5 second interval)

(Display 1)

(Display 2)

In Self-Diagnostic mode:

1. Select [CD,

2. Press [

To exit, press [ unit or remote control. (The tray will return to PLAY position and then power off)

In TAPE mode:

1. With no cassette tape inserted.

2. Press [STOP, I], [ unit.

3. Press [SINGLE CHANGE] on main unit.

To exit, press [ unit or remote control.

In doctor mode:

1. Press [DISC] button on remote control.

To exit, press [ENTER] button on remote control or press [ unit or remote control.

In doctor mode:

1. Press [0] button on remote control.

To exit, press [ENTER] button on remote control or press [ unit or remote control.

In doctor mode:

1. Press [DIMMER] button on remote control.

To exit, press [ENTER] button on remote control or press [ unit or remote control.

/ ] for CD mode.

] button.

, POWER] button on main

] button on main

, POWER] button on main

Cold Start To activate cold start

upon next AC power up.

In doctor mode:

1. Press [4] button on remote control.

To exit, press [ENTER] button on remote control or press [ unit or remote control.

, POWER] button on main

SA-AK960GCP

9.2.3. Service Mode Table 3

Item FL Display Key Operation

Mode Name Description Front Key

Clock Setting Check

To indicate that a clock time was set properly.

In doctor mode:

1. Press [MUTING] button on remote control.

To exit, press [ENTER] button on remote control or press [ unit or remote control.

, POWER] button on main

Volume Setting To check for volume

setting during this mode.

Display 1 In doctor mode:

9.2.4. Reliability Test Mode (CRS1 Mechanism)

Below is the process flow chart of ageing for the CD changer unit. (CRS1)

1. Press [7] button on remote control. To exit, press [ENTER] button on remote control or press [ unit or remote control.

2. Press [8] button on remote control. To exit, press [ENTER] button on remote control or press [ unit or remote control.

3. Press [9] button on remote control. To exit, press [ENTER] button on remote control or press [ unit or remote control.

, POWER] button on main

SA-AK960GCP

9.3. Error code Table Display

Self-Diagnosis Function (refer Section 9.2) provides information on any problems occuring for the unit and its respective components by display ing the error codes. These error code such as U**, H** and F** are stored in memory and held unless it is cleared.

The error code is automatically display after entering into self-diagnostic mode.

9.3.1. Error Code Table for Deck Mechanism

Error Code Diagnosis Contents Description of error Automatic FL Display Remarks

H01 Mode switch

abnormal (Plunger and capstan motor)

H02 REC_INHFswitch

abnormal

H03 HALF switch

abnormal

F01 Reel pulse abnormal Detection of switch for the

F02 TPS abnormal Tape position detection

Detection of switch for “On” when the deck mechanism is in the driving mode. Detection time at 1.6ms in 6 times interval

Detection of switch for presence of the FORWARD recording tab when a cassette is loaded into the deck. Detection time is 20ms at 2 times interval.

Detection of switch for "ON" state when a casstte is loaded into the deck. Detection time is 20ms at 2 times interval. When no cassette is loaded, it shall be in "OFF" state

reel pulse signal toggling between high and low.

signal. It is abnormal condition when the tape ends before the checking is completed

For Deck Mechanism Unit (Deck 1/2) Press [ next error. To exit, press [POWER] button on main unit. Normal operation shall executed upon next powering on of the main unit.

] on main unit for

9.3.2. Error Code Table For CD Changer Block

SA-AK960GCP

9.3.3. Error Code Table For Power Supply

9.3.4. CRS1 Error Code display

CRS1 Error Code display

1. The errors that occured in CRS1 Mechanism can be recalled and displayed, in the order of the occurence under self-diagnostic for procedures to enter this mode.

• Only the first 5 errors will be memorized (in backup memory). The subsequence error shall be ignored and not memorize.

For system with EEPROM as memory backup,memory space in EEPROM is neccesary.

2. To display all error code memorized

In CRS1 Self-Diagnostic mode, press [SINGLE CHANGE] to display subsequence error code.

It shall repeat after reaching error no. 5.

e.g.:

[1____IHMS]→ [SINGLE CHANGE]

[2____ITOP]→ [SINGLE CHANGE]

[3____HOME]→ [SINGLE CHANGE]

[4____LOAD]→ [SINGLE CHANGE]

[5_____UDD]→ [SINGLE CHANGE]

3. To clear the error code memory

In CRS1 Self-Diagnostic mode, long press [SINGLE CHANGE] key (2s or more)

SA-AK960GCP

10 Assembling and Disassembling

“ATTENTION SERVICER”

Be careful when disassembling and servicing.

Some chassis components may have sharp edges.

Special Note:

1. This model uses a CD changer mechanism unit (CRS1). In this following section does not contain the necessary assembly and disassembly information except the assembly and disassembly of the traverse unit. Kindly refer to the original service manual for the CD changer mechanism unit. (Order No. MD0509368C 0).

2. This section describes the disassembly procedures for all the major printed circuit boards and main components.

3. Before the disassembly process was carried out, do take special note that all safety precautions are to be carried out.

(Ensure that no AC power supply is connected during disassembling.)

4. For assembly after operation checks or replacement, reverse the respec tive procedures.

Special reassembly procedures are described only when required.

5. The Switch Regulator IC may have high temperature after prolonged use.

6. Use caution when removing the top cabinet and avoid touching heat sinks located in the unit.

7. Select items from the following index when checks or replacement are required.

• Disassembly of Top Cabinet

• Disassembly of CD Changer Unit (CRS1)

• Disassembly of Subwoofer Interface P.C.B

• Disassembly of Rear Panel

• Disassembly of Transformer P.C.B

• Disassembly of Main P.C.B

• Disassembly of Sub Power P.C.B

• Replacement of Regulator IC (IC5101)

• Replacement of Regulator Transistor (Q5111)

• Replacement of Regulator Transistor (Q5112)

• Replacement of Regulator Transistor (Q5105)

• Replacement of Regulator Transistor (Q5106)

• Disassembly of Power P.C.B

• Replacement of Digital-Amp IC (IC5300)

• Replacement of Digital-Amp IC (IC5200)

• Replacement of Digital-Amp IC (IC5000)

• Replacement of Digital-Amp IC (IC5400)

• Disassembly of Front Panel

• Disassembly of USB P.C.B

• Disassembly of Panel P.C.B, Remote Sensor P.C.B & Sub Panel P.C.B

• Disassembly of Deck Mechanism Unit

• Disassembly for Deck P.C.B

• Disassembly of Deck Mechanism

• Disassembly of Traverse Unit

• Disassembly CD Lid

• Disassembly Cassette Lid

• Rectification for Tape Jam Problem

SA-AK960GCP

10.1. Disassembly flow chart

The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing.

To assemble the unit, reverse the steps shown in the chart below.

SA-AK960GCP

10.2. Main Parts Location Diagram

10.3. Disassembly of Top Cabinet

SA-AK960GCP

Step 1 : Remove 3 screws on Top Cabinet (L) side.

Step 2 : Remove 3 screws on Top Cabinet (R) side.

Step 5 : Push the Top Cabinet backwards to release catches.

Step 6 : Remove Top Cabine t.

10.4. Disassembly of CD Changer Unit (CRS1)

• Follow the (Step 1) - (Step 6) of Item 10.3

Step 1 : Remove 1 screw.

Step 3 : Remove 5 screws.

Step 4 : Lift the both sides of Top Cabinet outwards.

SA-AK960GCP

Step 2 : Release the claws outwards on both ends.

Step 3 : Lift up the CD changer unit upwards.

Step 4 : Detach FFC cable at the connectors (CN2805 &

CN2801) on Main P.C.B.

Step 5 : Detach cable at the connector (CN2812) on Main P.C.B.

Step 6 : Remove CD changer unit (with chassis).

Step 7 : Remove 2 screws.

Step 8 : Remove the CD changer mechanism as arrow shown.

Note:

For disassembly & assembly of traverse unit, please refer to section 10.26 of this service manual. Please refer to original Service Manua l for the Disassembly and Assembly of the CD Changer Unit (CRS1).

10.5. Disassembly of Subwoofer Interface P.C.B

• Follow the (Step 1) - (Step 6) of Item 10.3

• Follow the (Step 1) - (Step 6) of Item 10.4

• Disassembly of CD changer mechanism

Step 1 : Upset the CD changer mechanism.

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