Panasonic SAAKX-90-PH, SAAKX-90-PR Service manual

PSG1003010CE

CD Stereo System

Model No. SA-AKX90PH

SA-AKX90PR

Product Color: (K)...Black Type

Notes: Please refer to the original service manual for:

O CD Mechanism Unit (DLS6C),Order No:MD0803034CE
O Speaker System SB-AKX90PH-K,Order No.:PSG1003001CE

TABLE OF CONTENTS

PAGE PAGE

1 Safety Precautions----------------------------------------------- 4

1.1. General Guidelines---------------------------------------- 4

1.2. Before Use -------------------------------------------------- 4

1.3. Caution For Fuse Replacement ------------------------ 4

1.4. Before Repair and Adjustment ------------------------- 4

1.5. Protection Circuitry---------------------------------------- 5

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

2Warning--------------------------------------------------------------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

© Panasonic Corporation 2010. All rights reserved.
Unauthorized copying and distribution is a violation
of law.

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

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

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

4 Specifications ----------------------------------------------------12
5 Location of Controls and Components------------------13

5.1. Main Unit Key Button Operation----------------------13

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

5.3. Media Information----------------------------------------15

6 Self-Diagnostic and Special Mode Setting -------------16

6.1. Cold-Start---------------------------------------------------16

6.2. Doctor Mode Table---------------------------------------17

6.3. Reliability Test Mode (CD Mechanism Unit
(DLS6C)) ---------------------------------------------------19

6.4. Self-Diagnostic Mode -----------------------------------20

6.5. Self-Diagnostic Error Code Table --------------------21

7 Troubleshooting Guide----------------------------------------22

7.1. Troubleshooting Guide for F61 and/or F76)-------22

7.2. Part Location ----------------------------------------------23

7.3. D-Amp IC Operation & Control -----------------------27

8 Service Fixture & Tools---------------------------------------29

8.1. Service Tools and Equipment-------------------------29

9 Disassembly and Assembly Instructions---------------30

9.1. Disassembly Flow Chart--------------------------------31

9.2. Main Components and P.C.B. Locations-----------32

9.3. Disassembly of Top Cabinet---------------------------33

9.4. Disassembly of Tuner P.C.B.--------------------------34

9.5. Disassembly of Front Panel Assembly -------------34

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

9.7. Disassembly of Remote Sensor P.C.B.-------------37

9.8. Disassembly of CD Open Button P.C.B.------------38

9.9. Disassembly of Jupiter P.C.B.-------------------------39

9.10. Disassembly of Music Port/Headphone P.C.B.---39

9.1 1 . Disassembly of CD Lid----------------------------------40

9.12. Disassembly of Main P.C.B.---------------------------41

9.13. Replacement of Regulator IC (IC2010)-------------42

9.14. Disassembly of Mic P.C.B.-----------------------------43

9.15. Disassembly of D-Amp P.C.B.------------------------44

9.16. Disassembly of SMPS P.C.B.-------------------------46

9.17. Replacement of Switching Regulator IC
(IC5701) ----------------------------------------------------47

9.18. Replacement of Rectifier Diode (D5702)-----------48

9.19. Replacement of Regulator Diode (D5801)---------50

9.20. Replacement of Regulator Diode (D5802)---------51

9.21. Replacement of Regulator Diode (D5803)---------52

9.22. Disassembly of CD Mechanism Unit (DLS6C) ---53

9.23. Disassembly of Rear Panel----------------------------55

9.24. Disassembly of Voltage Selector P.C.B.------------56

9.25. Disassembly of CD Servo P.C.B.---------------------57

9.26. Replacement of Audio Digital Amp IC
(IC5000) ----------------------------------------------------58

9.27. Replacement of Audio Digital Amp IC
(IC5400) ----------------------------------------------------59

9.28. Replacement of Audio Digital Amp IC
(IC5200) ----------------------------------------------------60

9.29. Replacement of Audio Digital Amp IC
(IC5300) ----------------------------------------------------61

9.30. Disassembly of Surround D-Amp P. C.B. -----------62

9.31. Replacement of Audio Digital Amp IC
(IC5900) ----------------------------------------------------63

10 Replacement of Traverse Unit------------------------------65

10.1. Disassembling Procedures----------------------------65

10.2. Assembling Procedure --------------------------------- 66

11 Service Position------------------------------------------------- 68

11.1. Checking and Repairing of Main P.C.B.------------ 68
1 1 .2. Checking and Repairing of D-Amp P.C.B.--------- 68

11.3. Checking and Repairing of Surround D-Amp
P.C.B. ------------------------------------------------------- 68

1 1.4. Checking and Repairing of Panel P.C.B. ---------- 68

11.5. Checking and Repairing of Jupiter P.C.B.--------- 69

11.6. Checking and Repairing of SMPS P.C.B.---------- 69

12 Voltage & Waveform Chart ---------------------------------- 71

12.1. CD Servo P.C.B.----------------------------------------- 71

12.2. Main P.C.B. (1/3)----------------------------------------- 72

12.3. Main P.C.B. (2/3)----------------------------------------- 73

12.4. Main P.C.B. (3/3)----------------------------------------- 74

12.5. Jupiter P.C.B. (1/3)-------------------------------------- 75

12.6. Jupiter P.C.B. (2/3)-------------------------------------- 76

12.7. Jupiter P.C.B. (3/3)-------------------------------------- 77

12.8. Panel P.C.B.----------------------------------------------- 77

12.9. D-Amp P.C.B.--------------------------------------------- 78

12.10. SMPS P.C.B.---------------------------------------------- 79

12.1 1. Tuner P.C.B.----------------------------------------------- 79

12.12. Surround D-Amp P.C.B.-------------------------------- 80

12.13. Mic P.C.B.-------------------------------------------------- 80

12.14. Waveform T able (1/2)----------------------------------- 81

12.15. Waveform T able (2/2)----------------------------------- 82

13 Illustration of ICs, Transistor and Diode---------------- 83
14 Simplified Block Diagram------------------------------------ 85

14.1. Overall Simplified Block Diagram-------------------- 85

14.2. D-Amp Block Diagram---------------------------------- 86

15 Block Diagram--------------------------------------------------- 87

15.1. Servo/System Control ---------------------------------- 87

15.2. I C Terminal Chart (Servo/System Control)-------- 88

15.3. Audio-------------------------------------------------------- 89

15.4. Power Amplifier ------------------------------------------ 90

15.5. Power Supply--------------------------------------------- 92

16 Wiring Diagram-------------------------------------------------- 93
17 Schematic Diagram Notes----------------------------------- 95
18 Schematic Diagram-------------------------------------------- 97

18.1. CD Servo Circuit ----------------------------------------- 97

18.2. Main Circuit------------------------------------------------ 98

18.3. Jupiter Circuit --------------------------------------------104

18.4. Panel Circuit ---------------------------------------------108

18.5. CD Open Button, Remote Sensor, Tuner &
Music Port/Headphone Circuit-----------------------110

18.6. D-Amp Circuit--------------------------------------------111

18.7. Surround D-Amp Circuit ------------------------------ 113

18.8. SMPS Circuit---------------------------------------------114

18.9. Mic & Voltage Selector Circuit-----------------------116

19 Printed Circuit Board-----------------------------------------117

19.1. CD Servo, Mic & Voltage Selector P.C.B. -------- 117

19.2. Main P.C.B.-----------------------------------------------118

19.3. Jupiter P.C.B.--------------------------------------------119

19.4. Panel P.C.B.----------------------------------------------120

19.5. CD Open Button, Remote Sensor, Tuner,
Music Port/Headphone & Surround D-Amp
P.C.B. ------------------------------------------------------121

19.6. D-Amp P.C.B.--------------------------------------------122

19.7. SMPS P.C.B.---------------------------------------------123

20 Terminal Function of ICs------------------------------------125

20.1. IC2003 (RFKWMAKX90PH): IC MICRO
PROCESSOR -------------------------------------------125

2

20.2. IC6901(C0HBB0000057): IC FL Driver-----------126

21 Exploded View and Replacement Parts List ---------127

21.1. Exploded View and Mechanical replacement
Part List ---------------------------------------------------127

21.2. Electrical Replacement Part List--------------------133

3

1 Safety Precautions

1.1. General Guidelines

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

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

3. After servicin g, 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. Mea sure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cab inet 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 5.2MΩ.
When the exposed metal does not have a return path to the chassis, the reading must be

1.1.2. Leakege 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 p otential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 o r 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 befo re it is
returned to the customer.

Figure 1

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 ~ 127V or 220V ~ 240V, set to the “110V ~ 127V or 220V ~ 240V” position.)
Note that this unit will be seriously damaged i f this setting is not made correctly. (There is no voltage selector for some countries,
the correct voltage is already set.)

1.3. Caution For Fuse Replacement

1.4. Before Repair and Adjustment

Disconnect AC power to discharge unit AC Capacitors as such (C5701, C5703, C5704, C5705, C5706, C5707, C570 8) through a
10 Ω, 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.

4

Current consumption at AC 110~127 V / 220~240 V, 50/60 Hz in NO SIGNAL mode volume minimal should be ~ 500 mA.

1.5. 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.

1.6. 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.

SafetyRef. No. Part No. Part Name & Description Remarks

6 REXX1030 1P RED WIRE (VOLTAGE-SMPS)

7 REXX1031 1P BLACK WIRE (VOLTAGE-SMPS)

13 RGRX1002E-A1 REAR PANEL PH

13 RGRX1002E-B1 REAR PANEL PR

37 RKMX1003-K TOP CABINET

401 RAEX0190Z-V TRAVERSE UNIT

A2 K2CA2YY00039 AC CORD PR

A2 K2CQ2CA00007 AC CORD PH

A3 RQTX1099-M O/I BOOK (En/Sp)

PCB3 REPX0809F SMPS P.C.B. (RTL)

PCB11 REPX0809F VOLTAGE SELECTOR P.C.B. (RTL)

DZ5701 ERZV10V511CS ZNR

S5701 K0ABCA000007 SW VOLTAGE SELECTOR

L5703 G0B932H00002 LINE FILTER

T5701 G4DYZ0000049 SWITCHING TRANSFORMER

T5751 ETS19AB2E6AG SUB TRANSFORMER

T6000 G4DYA0000214 SWITCHING TRANSFORMER

PC5701 B3PBA0000402 PHOTO COUPLER

PC5702 B3PBA0000402 PHOTO COUPLER

PC5720 B3PBA0000402 PHOTO COUPLER

PC5799 B3PBA0000402 PHOTO COUPLER

F1 K5D802BNA005 FUSE

TH5702 D4CAA2R20001 THERMISTOR

TH5860 D4CC11040013 THERMISTOR

TH5900 D4CC11040013 THERMISTOR

P5701 K2AA2B000011 AC INLET

C5701 F0CAF334A105 0.33uF

C5703 F0CAF104A105 0.1uF

C5704 F1BAF1020020 1000pF

C5705 F1BAF1020020 1000pF

C5706 F1BAF1020020 1000pF

C5707 F1BAF1020020 1000pF

C5708 F1BAF1020020 1000pF

5

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, p lace the assembly on a cond ucti ve surface su ch as a lumi­num 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).

6

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: 785 nm (CD)
Maximum output radiation power from pickup: 100 µW/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.

7

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 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 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 the 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%

8

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 prevent 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 ground the sheet.

9

2.4.2.2. Human body grounding

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

10

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 (DLS6C):

1) This model uses CD Mechanism Unit (DLS6C).

• Micro-processor:

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

- Micro-processor IC, IC2003 (RFKWMAKX90PH)

• Speaker System:

1) This model uses Speaker System, SB-AKX90PH-K.

11

4 Specifications

Q AMPLIFIER SECTION
RMS output power stereo mode

Front High Ch (both channels driven)

100 W per channel (5 Ω), 1 kHz, 10% THD

Front Low Ch (both channels driven)

125 W per channel (4 Ω), 1 kHz, 10% THD

Surround Ch

125 W per channel (4 Ω), 1 kHz, 10% THD

Subwoofer Ch

250 W per channel (8 Ω), 100 Hz, 10% THD

Total RMS stereo mode power

1200 W

PMPO output power (For PR only)

13200 W

Q FM/AM 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 terminal (s)

75 Ω (unbalanced)

Amplitude Modulation (AM)

Frequency range

522 to 1629 kHz (9 kHz step)

520 to 1630 kHz (10 kHz step)

AUX Input

RCA pin jack
Headphone jack
Terminal Stereo,3.5 mm jack
Output level (CD,1 KHz, -20dB) 32 Ω(Max)
Music port (front)
Sensitivity 100 mV, 4.7k Ω
Terminal Stereo.3.5 mm jack
Mic jack
Sensitivity 0.7 mV, 1.1k Ω
Terminal Mono, 3.5 mm jack (1 system)

Q DISC SECTION
Discs played (8 cm or 12 cm)

(1) CD-Audio (CD-DA)
(2) CD-R/RW (CD-DA, MP3* formatted disc)
(3) MP3*
*MPEG-1 layer 3,MPEG-2 Layer 3

Pick up

Wavelength 795 nm(CD)
Laser Power CLASS 1 (CD)

Audio output (Disc)

Number of channels 4.2 ch (FL, FR, SL, SR, SWx2)
FL = Front left channel
FR = Front right channel
SL = Surround left channel
SR = Surround right channel
SW = Subwoofer channel

Q 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 16kbps to 320 kbps (playback)

USB recording

Bit Rate 128 kbps / 192kbps / 320kbps
USB recording speed 1x,4x (CD only)
recording file format MP3 (*.mp3)

Memory section
Memory

Memory size 2 GB
Memory File format MP3 (*.mp3)

Memory recording

Bit Rate 128 kbps / 192 kbps / 320kbps
Memory Recording speed 1x,4x (CD only)
Recording file format MP3 (*.mp3)
Capacity of total song recoreded 1000 song
(Use 128 kbps, approximately 1 song = 4 mins)

Q GENERAL

Power supply

AC 110 to 127/220 to 240 V, 50/60 Hz

Power Consumption

158 W

Dimensions (W x H x D) 250 mm x 336 mm x 249 mm
Mass 3.6 kg
Operating temperature range 0 °C to +40 °C
Operating humidity range 35% to 80% RH

(no condensation)

Power Consumption in st andby
mode

0.3 W (Approximate)

Notes

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

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

Q System: SC-AKX90PH-K

Main Unit: SA-AKX90PH-K

Speaker system: SB-AKX90PH-K

Q System: SC-AKX90PR-K

Main Unit: SA-AKX90PR-K

Speaker system : SB-AKX90PHK

12

5 Location of Controls and Components

5.1. Main Unit Key Button Operation

13

5.2. Remote Control Key Button Operation

14

5.3. Media Information

15

6 Self-Diagnostic and Special Mode Setting

6.1. 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

16

6.2. Doctor Mode Table

6.2.1. Doctor Mode Table 1

Doctor Mode

Micro-P Version
Display

Item

DescriptionMode Name

To enter into Doctor Mode

To check the firmware version
for Jupiter & Microprocessor IC.

Display 1 will display for 2 secs,
followed by display 2.

Display 1:

Display 2:

FL Display

Key Operation

Front Key

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

2.To exit, press [OK] button on
remote control or press
[POWER, /I] button on main
unit or remote control.

In Doctor Mode:

1.Press [2] button on
remote control.

Jupiter
Micro-P
Version

Micro-processor

Version

17

6.2.2. Doctor Mode Table 2

Cold Start

Volume Setting

Check

FL Display

Check

CD Open

Check

Item

DescriptionMode Name

To active cold start upon next AC
power up when reset start is execute
the next time.

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)

To excute CD OPEN operation.

FL Display

Press [7]: VOLUME50
Press [8]: VOLUME35
Press [9]: VOLUME0
Press [PLAY MODE]: VOLUME30

Key Operation

Front Key

In Doctor Mode:

1. Press [DISPLAY] button
on remote control.

In Doctor Mode:

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

Volume

In Doctor mode:

1. Press [1] button on
remote control.

In Doctor mode:

1. Press [DEL] button on
remote control.

DLS6 Reliability

Test (Loading)

To determine DLS6
Open/Close operation.

In this mode, the tray will open &
close.

Note: Refer to Section 6.3 Fig 1 for
process flow.

In Doctor Mode:

1.Press [>10], follow by [1]
and [1] buttons on remote
control.

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

18

6.3. Reliability Test Mode (CD Mechanism Unit (DLS6C))

Below is the process flow chart of the aging test for the CD Mechanism Unit (DLS6C).

OPEN
Operation

OPEN wait
fot 1 s

CLOSE
Operation

CLOSE wait
for 5s

Fig. 1. Reliability Test (Loading)

Count up

19

6.4. Self-Diagnostic Mode

20

6.5. Self-Diagnostic Error Code Table

Self-Diagnostic Function (Refer Section 6.4. 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.

6.5.1. Power Supply Error Code Table

Error Code Diagnosis Contents Description of error Automatic FL Display Remarks

F61 Power Amp IC output

abnormal

F76 DCDET1 = L (NG)

Upon power on,
PCNT=HIGH, DCDET2=L
after checking LSI.

Press [ ] on main unit for
next error.

-DEMO

F61-76 Both DCDET1 and

DCDET2 L(NG)

6.5.2. Mechanism Error Code Table (CD Mechanism Unit (DLS6C))

Error Code Diagnosis Contents Description of error Automatic FL Display Remarks

F15 CD REST SW Abnormal

F26 Communication between

CD servo LSI and micro-p
abnormal.

CD traverse position initial
setting operation fail safe

time is over (10 sec) waiting
for REST SW to turn on.

At the time of switching to
CD function,SENSE = H
shall be detected using
DTMS system setting
command. If the error is
memorized when SENSE
= L is not detected within
fail safe timer time (20ms),
[F26] shall be displayed
simultaneously.This
display shall be retained if
the power is ON and at
CD function. If this error
occurs, CD operation
afterwards shall not be
executed as in the case of
[NO DISC].

Press [ ] on main
unit for next error.

Press [ ] on main
unit for next error.

H15 CD Open SW Abnormal During normal operation

H16

CD closing SW abnormal

CD OPEN SW On fail to be
detected with 3 sec.

During Closing operation,if
"POS_SW_CEN" is not
detected within 3 sec.

21

Press [ ] on main
unit for next error.

Press [ /-DEMO]on main
unit for next error.

7 Troubleshooting Guide

7.1. Troubleshooting Guide for F61 and/or F76)

This section illustrates the checking procedures when upon detecting the error of “F61” and “F76” after power up of the unit.It is for
purpose of troubleshooting and chaking in SMPS,D-Amp & Main P.C.B..

Symptom Remarks

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

2 AC Inlet, P5701 2 P5701 solder crack, dry joint.
3 Fuse, F1 3 Fuse, F1 Open
4 Photocoupler 4 PC5702/PC5799 solder crack.

PC5702, PC5799 Dry joint, short circuit, open circuit.
5 Switching IC, IC5701 5 IC5701 Faulty.
6 Switching IC, IC5799 6 IC5799 Faulty.

Set can ON 1 Speaker Output 1a Faulty speaker unit, Loose connection, Short.
then F61

2 D-AMP circuit

Set can ON 1 Transformer T5701 1a Short circuit between Pin 14 and Pin 15.
then F76 1b Short circuit between Pin 15 and Pin 16.

2 DC-DC Circuit 2a Check cable wire connection between connector

1b Check output IC (Pin 10 & 14) which have DC Voltage

at speaker output short to Vdd/Vss.

2a D-Amp IC5000, IC5200, IC5300, IC5400 defective.

Check PWM output at pin 10, 14 of D-Amp IC.
Check + VDD/SS supply at pin 4 & 20 of D-Amp IC.
Check pin 1 (OSC) & pin 23 (MODE) of D-Amp IC.

Check pattern crack and solderability.

2b D-AMP IC, IC5900 defective.

(DC voltage of +/-30V detected at speaker output)

1c Short circuit between Pin 16 and Pin 17.

CN2014(At Main P.C.B) & connector CN5802

(At SMPS P.C.B)

2b Voltage regulator IC (IC2010) & DC/DC Converter IC

(IC2011) faulty.

Possible Fault(s)Checking Items

Refer to
section 7.2.1
Fig.1 SMPS P.C.B..

Refer to section

7.2.3 Fig 3 D-Amp
P.C.B..
Refer to section

7.2.4 Fig 4
Surround
D-Amp P.C.B..

Refer to
section 7.2.1
Fig.1 SMPS P.C.B..

Refer to
section 7.2.2
Fig.2 Main P.C.B..

3 Photocoupler 3 PC5720 solder crack.

Set can ON 1 Rectifier D5801 1a Improper contact between D5801 to Heatsink
working normally Rectifier D5802
for some time 2 Thermistor TH5860 1b Set trigger temperature protection.
then F76

PC5720 dry joint, short circuit, open circuit.

Improper contact between D5802 to Heatsink

Refer to
section 7.2.1
Fig.1 SMPS P.C.B..

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7.2. Part Location

7.2.1. SMPS P.C.B.

AC Inlet:
P5701

Fuse:
F1

Switching IC:
IC5799

Switching IC:
IC5701

Transformer:
T5701

Thermistor:
TH5860

Photocoupler:
PC5720

Fig. 1 SMPS P.C.B.

Photocoupler:
PC5702, PC5799

Rectifier:
D5801, D5802

Connector:
CN5802

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7.2.2. Main P.C.B.

Voltage Regulator IC:
IC2010

Connector:
CN2014

DC/DC Converter IC:
IC2011

Fig. 2 Main P.C.B.

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7.2.3. D-Amp P.C.B.

Audio Digital Power

Amp IC: IC5400

Audio Digital Power

Amp IC: IC5000

Audio Digital Power

Amp IC: IC5200

Audio Digital Power

Amp IC: IC5300

Fig. 3 D-Amp P.C.B.

25

7.2.4. Surround D-Amp P.C.B.

D-Amp IC:
IC5900

Fig. 4 Surround D-Amp P.C.B.

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7.3. D-Amp IC Operation & Control

D-AMP IC Operation & Control

1) D-AMP IC (C1AB0000497) was used for this model.

2) Three control pins (signal send from micro-processor IC) were used to control the D-AMP IC
operation such as muting, standby and normal operation. They are described as below: -

No Pin no Signal name Function

1 4 F_HOP Frequency Hop control.
2 6 MODE_DA Digital Amp On/Off control.
3 3 MUTE_F Digital Amp Muting control

Table 1: Digital AMP Pin Control.

Here is detailed description of the three control pins for the D-AMP IC

A) MODE_DA & MUTE_F were used to switch the D-AMP IC in the following muting status:

x L(Low/OFF): Standby / OFF
x H (High/ON): Operating or Mute

Below is the logic for the two pins used for the control of the D-AMP IC.

No MODE_DA MUTE_F Digital AMP IC mode status
1 L X OFF (0V)
2 H H Mute (2.5V)
3 H L Operating(5V)

Table 2: Digital AMP IC Mode Status.

Note: Standby/OFF condition of D.AMP IC is available / activated only during the following
event: Switching of Frequency Hoping, power off and start up (when the unit is undergoing
the transition from standby to normal operation mode)

B) F_HOP is used to control the D-AMP operation to avoid interference with AM source by
controlling the frequency source used. It will switch from one frequency to the other, depending on
the tuned AM frequency.

For 9 KHz Step

AM Band Frequency F_HOP Switching Frequency

522 ~ 558 L 301
567 ~ 639 H 350
648 ~ 855 L 301
864 ~ 945 H 350

954 ~ 1152 L 301
1161 ~ 1242 H 350
1251 ~ 1449 L 301
1458 ~ 1539 H 350
1548 ~ 1629 L 301

Table 3: F_HOP Control during 9 kHz Step

For 10 KHz Step

AM Band Frequency F_HOP Switching Frequency

520 ~ 560 L 301

570 ~640 H 350
650 ~ 860 L 301
870 ~ 950 H 350

960 ~ 1160 L 301

27

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.

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8 Service Fixture & Tools

8.1. Service Tools and Equipment

Prepare service tools before process service position.

Service Tools Remarks

Main P.C.B. (CN2014) - SMPS P.C.B. (CN5802) REXX0189 (11P Cable Wire)

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9 Disassembly and Assembly Instructions

Caution Note:

• This section describes the disassembly and/or assembly procedures for all major printed circuit boards & main compo­nents for the unit. (You may refer to the section of “Main components and P.C.B Locations” as described in the service
manual)

• Before carrying out the disassembly process, please ensure all the safety precautions & procedures are followed.

• During the disassembly and/or assembly process, please handle with care as there may be chassis components with
sharp edges.

• Avoid touching heatsinks due to its high temperature after prolong use. (See caution as described below)

• During disassembly and assembly, please ensure proper service tools, equipments or jigs is being used.

• During r eplacement of component parts, please refer to the section of “Replacement Parts List” as described in the
service manual.

• Select items from the following indexes when disassembly or replacement are required.

• Disassembly of Top Cabinet

• Disassembly of Tuner P.C.B.

• Disassembly of Front Panel Assembly

• Disassembly of Panel P.C.B.

• Disassembly of Remote Sensor P.C.B.

• Disassembly of CD Open Button P.C.B.

• Disassembly of Jupiter P.C.B.

• Disassembly of Music Port/Headphone P.C.B.

• Disassembly of Mic P.C.B.

• Disassembly of CD Lid

• Disassembly of Main P.C.B.

• Replacement of Regulator IC (IC2010)

• Disassembly of Surround D-Amp P.C.B.

• Replacement of Audio Digital Amp IC (IC5900)

• Disassembly of D-Amp P.C.B.

• Replacement of Audio Digital Amp IC (IC5000)

• Replacement of Audio Digital Amp IC (IC5200)

• Replacement of Audio Digital Amp IC (IC5300)

• Replacement of Audio Digital Amp IC (IC5400)

• Disassembly of SMPS P.C.B.

• Replacement of Switching Regulator IC (IC5701)

• Replacement of Regulator Diode (D5702)

• Replacement of Regulator Diode (D5801)

• Replacement of Regulator Diode (D5802)

• Replacement of Regulator Diode (D5803)

• Disassembly of CD Mechanism Unit (DLS6C)

• Disassembly of Rear Panel

• Disassembly of Voltage Selector P.C.B.

• Disassembly of CD Servo P.C.B.

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