Panasonic SA-AKX34 Schematic

PSG1202003CE

CD Stereo System

Model No. SA-AKX34PH

SA-AKX34PN

Product Color: (K)...Black Type

Please refer to the original service manual for:

 CD Mechanism Unit (BRS11C), Order No. PSG1201019AE  Speaker system SB-AKX34PN-K , Order No. PSG1202004CE

TABLE OF CONTENTS

PAGE PAGE

1 Safety Precautions----------------------------------------------- 3

1.1. General Guidelines---------------------------------------- 3

1.2. Before Use (For PH only)-------------------------------- 3

1.3. Before Repair and Adjustment------------------------- 3

1.4. Protection Circuitry----------------------------------------4

1.5. Caution For Fuse Replacement------------------------ 4

1.6. Safety Parts Information--------------------------------- 5

2 Warning-------------------------------------------------------------- 6

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive (ES) Devices -------------- 6

2.2. Precaution of Laser Diode------------------------------- 7

2.3. Service caution based on Legal restrictions-------- 8

2.4. Handling Precautions for Traverse Unit-------------- 9

3 Service Navigation --------------------------------------------- 11

3.1. Service Information-------------------------------------- 11

4 Specifications ----------------------------------------------------12 5 General/Introduction-------------------------------------------13

5.1. Media Information---------------------------------------- 13

6 Location of Controls and Components------------------ 14

6.1. Remote Control Key Button Operation ------------- 14

6.2. Main Unit Key Button Operation----------------------15

7 Installation Instructions -------------------------------------- 16

7.1. Speaker and A/C Connection-------------------------16

8 Service Mode----------------------------------------------------- 17

8.1. Cold-Start --------------------------------------------------17

8.2. Doctor Mode Table---------------------------------------18

8.3. Reliability Test Mode (CD Mechanism Unit (BRS11C)) -------------------------------------------------21

8.4. Self-Diagnostic Mode -----------------------------------22

8.5. Self-Diagnostic Error Code Table--------------------22

8.6. Sales Demonstration Lock Function ---------------- 23

9 Troubleshooting Guide----------------------------------------24

9.1. Part Location ----------------------------------------------24

9.2. Troubleshooting Guide for F61 and/or F76--------27

9.3. D-Amp IC Operation & Control -----------------------28

10 Service Fixture & Tools---------------------------------------30 11 Disassembly and Assembly Instructions---------------31

11.1. Disassembly Flow Chart--------------------------------32

11.2. Main Components and P.C.B. Locations-----------33 1 1 .3. Disassembly of Top Cabinet---------------------------34

11.4. Disassembly of Front Panel Unit---------------------35

11.5. Disassembly of Panel P.C.B.--------------------------36

11.6. Disassembly of Memory LED P.C.B.----------------38 1 1 .7. Disassembly of Remote Sensor P.C.B.-------------38

11.8. Disassembly of USB P.C.B. ---------------------------39

11.9. Disassembly of Music Port P.C.B. -------------------39

1 1 .10. Disassembly of CD Lid----------------------------------40

11.11. Disassembly of Main P.C.B.---------------------------40

11.12. Replacement of Voltage Regulator IC (IC2010) ----------------------------------------------------42

11.13. Replacement of Voltage Regulator IC (IC2011) ----------------------------------------------------43

11.14. Replacement of Audio Digital Amp IC (IC5800) ----------------------------------------------------44

1 1.15. Disassembly of SMPS P.C.B.-------------------------45

11.16. Replacement of Switching Regulator IC (IC5701) ----------------------------------------------------46

11.17. Replacement of Rectifier Diode (D5702)-----------47

11.18. Replacement of Rectifier Diode (D5801)-----------48

11.19. Replacement of Rectifier Diode (D5802)-----------50

11.20. Replacement of Regulator Diode (D5803)---------51

11.21. Disassembly of CD Mechanism Unit (BRS11C) --------------------------------------------------53

11.22. Disassembly of CD Interface P.C.B.-----------------55

1 1.23. Disassembly of CD Servo P.C.B.---------------------55

11.24. Disassembly of Rear Panel----------------------------56

11.25. Disassembly of Voltage Selector P.C.B.------------57

12 Service Position-------------------------------------------------58

12.1. Checking and Repairing of Main P.C.B. ------------58

12.2. Checking and Repairing of Panel P.C.B.-----------58

12.3. Checking and Repairing of SMPS P.C.B.---------- 59

12.4. Checking and Repairing of CD Servo P.C.B. (Side A)-----------------------------------------------------60

12.5. Checking and Repairing of CD Servo P.C.B. (Side B)-----------------------------------------------------61

13 Simplified Block Diagram ------------------------------------63

13.1. Power Block Diagram-----------------------------------63

14 Block Diagram ---------------------------------------------------64

14.1. Servo & System Control--------------------------------64

14.2. IC Terminal Chart-----------------------------------------66

14.3. Audio --------------------------------------------------------67

14.4. Power Supply ---------------------------------------------68

15 Wiring Connection Diagram---------------------------------70 16 Schematic Diagram---------------------------------------------71

16.1. Schematic Diagram Notes-----------------------------71

16.2. CD Servo Circuit------------------------------------------73

16.3. Main(MICON) Circuit------------------------------------77

16.4. Main(D-Amp) Circuit------------------------------------ 85

16.5. Panel Circuit ---------------------------------------------- 87

16.6. Remote Sensor, USB, Music Port and Memory LED Circuit------------------------------------- 89

16.7. CD Interface and Voltage Selector Circuit--------- 90

16.8. SMPS Circuit---------------------------------------------- 91

17 Printed Circuit Board------------------------------------------ 93

17.1. CD Servo P.C.B. ----------------------------------------- 93

17.2. Main P.C.B. (Side A) ------------------------------------ 94

17.3. Main P.C.B. (Side B) ------------------------------------ 95

17.4. Panel, Remote Sensor, USB and Music Port P.C.B. ------------------------------------------------------- 96

17.5. Memory LED and CD Interface P.C.B -------------- 97

17.6. SMPS and Voltage Selector (PH) ------------------- 98

17.7. SMPS P.C.B. (PN)--------------------------------------- 99

18 Appendix Information of Schematic Diagram -------101

18.1. Voltage & Waveform Chart---------------------------101

18.2. Illustration of ICs, Transistor and Diode-----------108

18.3. Terminal Function of ICs ------------------------------109

19 Exploded View and Replacement Parts List---------- 111

19.1. Exploded View and Mechanical replacement Part List --------------------------------------------------- 111

19.2. Electrical Replacement Part List--------------------117

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, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

3. After servicing, carry out the following leakage current checks to prevent the customer from being exposed 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. Measure the resistance value, with an ohmmeter, 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 1M and 5.2M. 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 1.5k, 10 watts resistor, in parallel with a 0.15F 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 pote ntial 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. In case a measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer.

Figure 1

1.2. Before Use (For PH only)

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 ~ 127V or 220V ~ 240V, set to the “110V ~ 127V or 220V ~ 240V” 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 to discharge unit AC Capacitors as such (C5700, C5701, C5703, C5704 (Fo r PH), C5705 (For PH), C5708) through a 10 , 10 W resistor to ground.

Caution:

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 / 220~240 V, 50/60 Hz in Power ON, FM Tuner, No Signal, volume minimal mode should be ~ 600 mA (PH). Current consumption at AC 120 V, 60 Hz in Power ON, FM Tuner, No Signal, volume minimal mode should be ~ 600 mA (PN).

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. Caution For Fuse Replacement

1.6. Safety Parts Information

Safety Parts List:

There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Exploded View & Replacement 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.

Safety Ref No. Part No. Part Name & Description Remarks

8 REX1536 1P RED WIRE (VOLTAGE SELEC-

9 REXX1122-J 1P BLACK WIRE (VOLTAGE SELEC-

20 RKMX1011-K1 TOP CABINET 21 RGRX1008M-A REAR PANEL PN 21 RGRX1008N-A REAR PANEL PH 301 RAE1034Z-V TRAVERSE ASS'Y A2 K2CB2YY00059 AC CORD PN A2 K2CQ2CA00007 AC CORD PH A3 RQT9617-M O/I BOOK (Sp) PN A3 RQT9619-M O/I BOOK (Sp) PH PCB9 REP4783F SMPS P.C.B. (RTL) PH PCB9 REP4783DA SMPS P.C.B. (RTL) PN PCB11 REP4783F VOLTAGE SELECTOR P.C.B. (RTL) PH DZ5701 ERZV05Z471CS ZNR S5701 K0ABCA000007 SW AC VOLTAGE SELECTOR PH L5706 G0B612H00002 LINE FILTER PH L5707 G0B612H00002 LINE FILTER PN T5701 G4DYZ0000051 MAIN TRANSFORMER PH T5701 G4DYZ0000060 MAIN TRANSFORMER PN T5751 ETS19AB2E6AG SUB TRANSFORMER T6000 G4DYA0000214 SWITCHING TRANSFORMER PC5701 B3PBA0000503 PHOTO COUPLER PC5702 B3PBA0000503 PHOTO COUPLER PC5720 B3PBA0000503 PHOTO COUPLER PC5799 B3PBA0000503 PHOTO COUPLER F1 K5D632BK0007 FUSE PH F1 K5D802APA008 FUSE PN TH5000 D4CC11040013 THERMISTOR TH5702 D4CAA2R20001 THERMISTOR TH5860 D4CC11040013 THERMISTOR TH5861 D4CC11040013 THERMISTOR PN P5701 K2AA2B000011 AC INLET PH P5701 K2AB2B000007 AC INLET PN R5708 ERJ8GEYJ155V 1.5M 1/4W R5709 ERJ8GEYJ155V 1.5M 1/4W C5700 F1BAF471A013 470pF C5701 F0CAF104A105 0.1uF C5703 F0CAF224A105 0.22uF C5704 F1BAF471A013 470pF PH C5705 F1BAF471A013 470pF PH C5708 F1BAF1020020 1000pF

TOR-SMPS)

2Warning

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive

(ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static 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 incidence of component da mage caused by electrostatic discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching 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 applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup 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 removal device. Some solder removal devices not classified as “anti-static (ESD protected)” can generate electrical charge sufficient 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, aluminum 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 bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lif ting of your foot from a carpeted floor can generate static electricity (ESD) suf-

ficient to damage an ES device).

2.2. Precaution of Laser Diode

Caution:

This product utilizes a laser diode with the unit turned “on”, invisible laser radiation is emitted from the pickup lens. Wavelength: 790 nm (CD) Maximum output radiation power from pickup: 100 W/VDE Laser radiation from the pickup unit is safety level, but be sure the followings:

1. Do not disassemble the pickup unit, since radiation from exposed laser diode is dangerous.

2. Do not adjust the variable resistor on the pickup unit. It was already adjusted.

3. Do not look at the focus lens using optical instruments.

4. Recommend not to look at pickup lens for a long time.

2.3. Service caution based on Legal restrictions

2.3.1. General description about Lead Free Solder (PbF)

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

The normal solder is the alloy of tin (Sn) and l ead (Pb). On the other hand, the lead free solder is the alloy mainl y 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) equi pped with th e temperature co ntrol after setting the temp erature 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%

2.4. Handling Precautions for Traverse Unit

The laser diode in the optical pickup unit may break down due to static electricity of clothes or human b ody. Special care must be taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the traverse unit.

2.4.1. Cautions to Be Taken in Handling the Optical Pickup Unit

The laser diode in the optical pickup un it may be damaged due to electrostatic discharge generating from clothes or human body. Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode.

1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure.

2. To p revent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed should be short-circuited with a short pin or a clip.

3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable.

4. The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexible cable, cut off the antistatic FPC.

2.4.2. Grounding for electrostatic breakdown prevention

Some devices such as the DVD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electricity in the working environment. Proceed servicing works under the working environment where grounding works is completed.

2.4.2.1. Worktable grounding

1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and groun d the sheet.

2.4.2.2. Human body grounding

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

3 Service Navigation

3.1. Service Information

This service manual contains technical information which will allow service personnel’s to understand and service this model. Please place orders using the parts list and not the drawing reference numbers.

If the circuit is changed or modified, this information wil l be fol lowed by supplemen t service manual to be filed with original se rvice manual.

• CD Mechanism Unit (BRS11C):

1) This model uses CD Mechanism Unit (BRS11C).

• Micro-processor:

1) The following components are supplied as an assembled part.

- Micro-processor IC, IC2003 (RFKWMAKX34M0)

• Speaker System:

1) This model uses Speaker System, SB-AKX34PN-K.

4 Specifications

 Amplifier section RMS output power stereo mode

Front Ch (both ch driven) 190 W per channel (4), 1

kHz, 10% THD

250 W per channel (4), 1

kHz, 30% THD

Total RMS stereo mode power 380 W (10% THD)

500 W (30% THD)

PMPO Output Power 5500 W

 Tuner, terminals section Preset station FM 30 stations AM 15 stations Frequency modulation (FM)

Frequency range 87.50 to 108.00 MHz

(50 kHz step)

Antenna terminals 75  (unbalanced)

Amplitude modulation (AM)

Frequency range 522 kHz to 1629 kHz

(9 kHz step)

Music port (front)

Sensitivity 100 mV, 4.7 k

Terminal Stereo, 3.5 mm jack

 General

Power consumption 77 W Power Consumption in st andby mode Power supply AC 110 to 127/220 to 240 V,

Dimensions (W x H x D) 220 mm x 334 mm x 245 mm Mass 3 kg Operating temperature range 0 C to +40 C Operating humidity range 35% to 80% RH

1. Specifications are subject to change without notice. Mass and dimension are appropriate

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

 System: SC-AKX34PH-K

Front Speakers: SB-AKX34PN-K

 System: SC-AKX34PN-K

Front Speakers: SB-AKX34PN-K

0.3 W (approximate)

50/60 Hz (for PH)

AC 120 V, 60 Hz (for PN)

(no condensation)

Main Unit: SA-AKX34PH-K

Main Unit: SA-AKX34PN-K

Aux Input RCA pin jack

 Disc section Discs played (8 cm or 12 cm) CD, CD-R/RW(CD-DA, MP3*)

Pick up

Wavelength 790 nm(CD) Laser power CLASS 1

Audio output (disc)

Number of channels 2 ch (FL, FR) FL = Front left channel FR = Front right channel *MPEG-1 Layer 3

 USB section USB Port

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) Bit rate 16 kbps to 320 kbps (playback)

USB Recording

Bit rate 128 kbps USB recording speed 1x, 3x max (CD only) Recording file format MP3 (*.mp3)

 Internal memory section Memory

Memory size 2 GB

Media file format support MP3 (*.mp3)

Memory Recording

Bit rate 128 kbps Memory recording speed 1x, 3x max (CD only) Recording file format MP3 (*.mp3) Capacity of total songs recorded (use 128 kbps, approximately 1 song = 4 mins)

510 songs

5 General/Introduction

5.1. Media Information

6 Location of Controls and Components

6.1. Remote Control Key Button Operation

6.2. Main Unit Key Button Operation

7 Installation Instructions

7.1. Speaker and A/C Connection

8 Service Mode

8.1. Cold-Start

Here is the procedure to carry out cold-start or initialize to shipping mode.

1. Unplug AC power cord

2. Press & hold [POWER] button

3. Plug AC power cord while [POWER] button being pressed FL Display will show “_ _ _ _ _ _ _ _”

4. Release [POWER] button

8.2. Doctor Mode Table

FL Display

Key Operation

Front Key

Item

DescriptionMode Name

Doctor Mode

EEPROM checksum check

(Decimal)

To enter into Doctor Mode In CD Mode:

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

In CD mode:

1. Enter Doctor Mode

2. To exit, press [DELETE] button on remote control

Displaying of

1. Year Develop.

2. Model Type.

3. ROM Type.

4. Firmware Version.

23 41

Version No. (001 ~ 999) specific for each firmware

Cold Start To active cold start upon next AC

power up when reset start is execute the next time .

In Doctor Mode :

1. Press [SLEEP] button on remote control.

or, press [POWER, /I] button on Main Unit

8.2.1. Doctor Mode Table 1

8.2.2. Doctor Mode Table 2

FL Display

Key Operation

Front Key

Item

DescriptionMode Name

Volume Setting Check

FL Display Check

To check the volume setting of a main unit.

To check the FL segment display All segment will light up while all LED blink at 0.5s,intervals.(if any)

In Doctor Mode :

1. Press [7], [8], [9] button on remote control.

In Doctor mode :

1. Press [1] button on remote control.

Press [7]: VOL50 Press [8]: VOL35 Press [9]: VOL0

Volume

In this mode, the tray will open & close.

Note: Refer to Section 8.3 Fig 1 for process flow .

The counter will increment by one . When reach 9999 will change to 0000

Cancellation Display

BRS11C Reliability Test (Loading)

To determine CD Mechanism Unit (BRS11C) Open/Close operation.

Note: Refer to Section 8.3 Fig 2. for process flow .

The counter will increment by one . When reach 9999 will change to 0000

Cancellation Display

BRS11C Reliability Test (Traverse)

Test

To determine CD Mechanism BRS11C Access Inner & Outer disc operation.

Note: Refer to Section 8.3 Fig 3. for process flow .

The counter will increment by one . When reach 9999 will change to 0000

Cancellation Display

BRS11C Reliability

(Combination)

In this mode,ensure the CD is in the main unit.

To determine CD Mechanism Unit (BRS11C) Open/Close & Access Inner & Outer Disc Operation.

In this mode,ensure the CD is in the main unit.

In Doctor Mode :

1. Press [10] [2] [1] button on remote control.

2. To cancel, press [0] on remote control.

In Doctor Mode :

1. Press [10] [1] [2] button on remote control.

2. To cancel, press [0] on remote control.

2. To cancel, press [0 ] on remote control.

In Doctor Mode :

1. Press [10] [1] [5] button on remote control.

2. To cancel, press [0] on remote control.

8.2.3. Doctor Mode Table 3

FL Display

Key Operation

Front Key

Item

DescriptionMode Name

Self- Adjustment

(AJST)

Result Display

i. Function: To display result of

self-adjustment for CD .

This is used for servicing

and analysis.

CD LSI Version Check

For checking CD LSI Version and checksum information.

In Doctor Mode:

1. Press [10] [1] [4] button on remote control .

In Doctor Mode :

1. Press [4] button on remote control .

Display of auto adjustment result

Reference table:

ERROR Code Status Condition

012468 ACEF

AOC1/AOC2 O O O O OOOO -

ABC2/ABC1 O - X O X O X O X -

AOC1 O - O X X O O X X -

FAGC/T AGC O - O O O X X X X -

AGC2 O - OOOOOO O

O: OK ; X: NG (In case that time out happens.)

: Either one of FO AOC, TR AOC and

FO coarse AGC is NG .

: If the AGC is NG (ignore others).

2.To cancel, press [0] on remote control .

ROM Version

(Display 1)

(Display 2)

Year

Develop

Year

Develop

ROM Type

Version (Decimal)

after 2 sec

Version (Decimal ) C hecksum (Hex)

8.3. Reliability Test Mode (CD Mechanism Unit (BRS11C))

OPEN Operation

OPEN wait for 1 s

CLOSE Operation

CLOSE wait for 4 s

Count up

First Track

Access

First Track

Play 5 s

Last Track

Access

Last Track

Play 5 s

Count up

First Track

Access

Play 10 s

Open

Operation

Open wait

for 1 s

Operation

Count up

First Track

Last Track

Play 10 s

Below is the process flow chart of the aging test for the CD Mechanism Unit (BRS11C).

Fig. 1. Reliability Test (Loading)

Fig. 2. Reliability Test (Traverse)

Fig. 3. Reliability Test (Combination)

8.4. Self-Diagnostic Mode

FL Display

Key Operation

Front Key

Item

Description

Mode Name

To enter into self diagnostic checking

System will perform a check on any unusual/error code from the memory

To clear the stored in memory (EEPROM IC)

Self Diagnostic Mode

Error code information

Delete error code

Step 1: Select CD mode (Ensure no disc is inserted).

Step 2: Press & hold [ ] follow by [

] on main unit for 2

seconds.

Step 1: In self diagnostic mode, Press [ ] on main unit.

To exit, press [^/I] on main unit or remote control.

Step 1: In self diagnostic mode, Press [0] on remote control.

To exit, press [^/I] on main unit or remote control.

Example:

8.5. Self-Diagnostic Error Code Table

Self-Diagnostic Function (Refer Section 8.4. Self-Diagnostic Mode) provides information on any problems occurring for the unit and its respective components by displaying 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.

8.5.1. Power Supply Error Code Table

8.5.2. CD Mechanism Error Code Table (CD Mechanism Unit (BRS1C))

Error Code Diagnostic Contents Description of error Automatic FL Display Remarks

CD H15 CD Open Abnormal During operation

POS_SW_R On fail to be detected with 4 sec. Error No. shall be clear by force or during cold start.

Press [

] on main unit for

next error.

CD H16 CD Closing Abnormal During operation

POS_SW_CEN On fail to be detected with 4 sec. Error No. shall be clear by force or during cold start.

Press [

] on main unit for

next error.

F26 Communication between

CD servo LSI and micro-p abnormal.

During switch to CD function, if SENSE = “L” within failsafe time of 20ms.

Press [

] on main unit for

next error.

8.6. Sales Demonstration Lock Function

8.6.1. Entering into sales Demo Mode

Here is the procedures to enter into Sales Demonstration Lock. Step 1: Turn on the unit. Step 2: Select to any mode function. Step 3: Press [ Step 4: The display will show upon entering into this mode for 2 sec..

OPEN/CLOSE] key then [ / ] key at the same time,press and hold both [ OPEN/CLOSE] and [ / ] keys for 5 sec.

Note: [

OPEN/CLOSE] button is invalid and the main unit displays “LOCKED” while the lock function mode is entered.

8.6.2. Cancellation

Step 1: Turn on the unit. Step 2: Select to any mode function. Step 3: Press [ Step 4: The display will show upon entering into this mode for 2 sec..

OPEN/CLOSE] key then [ / ] key at the same time,press and hold both [ OPEN/CLOSE] and [ / ] keys for 5 sec.

9 Troubleshooting Guide

9.1. Part Location

9.1.1. SMPS P.C.B.

Fig. 1 SMPS P.C.B.

9.1.2. Main P.C.B. (Front side)

Fig. 2 Main P.C.B.

9.1.3. Main P.C.B. (Back Side)

Fig. 3 Main P.C.B.

9.2. Troubleshooting Guide for F61 and/or F76

5 Switching Regulator 5 IC5701 Faulty .

6 T5751 Faulty.

Switching Mode Power Supply Control IC (IC5799) faulty.

Set can ON

1 Speaker Output 1 Faulty speaker unit, Loose connection, Short .

then F61

2 D -AMP circuit D-AMP IC, IC5800 defective.

(Check DC voltage at speaker terminals, 3V and above defective)

DC Voltage ok but no sound, check DC Voltage at Pin 1.

2a, 2b ok but no sound, check PWM waveform at Pin 10 and Pin 14 . If no PWM, 4 resistors defective (R5802, R5803, R5804, R5805).

Set can ON

1 Main Transformer T5701 Short circuit between Pin 11 and Pin 12 .

then F76

1b Short circuit between Pin 13 and Pin 14 . 1c Short circuit between Pin 16 and Pin 17 .

22Regulator Circuits 2a

2b 2c

Q2022 faulty (No +5V output).

IC2014 faulty (No +3.3V output).

IC2011 faulty (No +5V output).

L2001 Open.

3 Photocoupler

PC5720 solder crack,

PC5720

Dry joint, short circuit, open circuit.

1 Rectifier Diode D5801 Improper contact between D5801 to Heatsink .

Rectifier Diode D5802

TH5861

Improper contact between D5802 to Heatsink .

Thermistor TH5860,

1b Set trigger temperature protection.

Set can ON working normally for some time then F76

Symptom Remarks

Set cannot ON 1 A C Cord 1 AC Cord Faulty, Loose connection

2 3 Fuse, F1 3 Fuse, F1 Open . 4 Photocoupler 4 PC5702/PC5799 solder crack.

PC5702, PC5799 Dry joint, short circuit, open circuit.

IC2010 faulty (No +9V output). L2000 Open.

Possible Fault(s)Checking Items

AC Inlet, P5701 P5701 solder crack, dry joint .

IC, IC5701 Sub Transformer (T5751)

Refer to Section 9.1.1 Fig. 1. SMPS P.C.B.

Refer to Section 9.1.2 Fig. 2. and Fig.3. Main P.C.B.

Refer to Section 9.1.1 Fig. 1. SMPS P.C.B.

Refer to Section

9.1.1 Fig. 1. SMPS P.C.B.

Refer to Section 9.1.2 Fig. 2. Main P.C.B.

Refer to Section 9.1.1 Fig. 1. SMPS P.C.B.

5V ok condition, 2.5V or 0V defective.

D5798 faulty.

This section illustrates the checking procedures when upon detectin g the error of “F6 1” and/or “F76” after power up of the unit. It is for purpose of troubleshooting and checking in SMPS & Main P.C.B.

9.3. D-Amp IC Operation & Control

1170 ~ 1250 H 350 1260 ~ 1450 L 301 1460 ~ 1540 H 350 1550 ~ 1710 L 301

Table 4: F_HOP Control during 10 kHz Step

Note: During activating, the 3 control pins namely MUTE_F, MUTE_A and MODE_DA must be used to cover the “Pop” sound cause by F-HOP switching.

10 Service Fixture & Tools

Prepare service tools before process service position.

Ref. No Service Tools Remarks

SFT1 Main P.C.B. (CN2007) - SMPS P.C.B. (CN5802) REX1527(15P Cable Wire)

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