Panasonic SA-AKX56 Schematic
Model No. SA-AKX56GN
Product Color: (K)...Black Type
Please refer to the original service manual for:
O
O CD Mechanism Unit , Order No. PSG1102001CE
OO
O
O Speaker system SB-AKX56PN-K, Order No. PSG1304049AE
OO
PSG1304028CE
CD Stereo System
TABLE OF CONTENTS
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Before Repair and Adjustment------------------------- 3
1.3. Protection Circuitry----------------------------------------4
1.4. Caution For Fuse Replacement------------------------ 4
1.5. Safety Parts Information--------------------------------- 5
2 Warning-------------------------------------------------------------- 6
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatically 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
2.5. Grounding for electrostatic breakdown
prevention --------------------------------------------------10
3 Service Navigation----------------------------------------------11
3.1. Service Information --------------------------------------11
4 Specifications ----------------------------------------------------13
5 General/Introduction -------------------------------------------14
PAGE PAGE
5.1. Media Information---------------------------------------- 14
6 Location of Controls and Components------------------ 15
6.1. Remote Control Key Button Operation -------------15
6.2. Main Unit Key Button Operation----------------------16
7 Installation Instructions -------------------------------------- 17
7.1. Speaker and A/C Connection-------------------------17
8 Service Mode----------------------------------------------------- 18
8.1. Cold-Start --------------------------------------------------18
8.2. Doctor Mode Table---------------------------------------19
8.3. Reliability Test Mode (CD Mechanism Unit)------- 22
8.4. Self-Diagnostic Mode -----------------------------------23
8.5. Self-Diagnostic Error Code Table--------------------23
8.6. Sales Demonstration Lock Function ---------------- 24
9 Troubleshooting Guide --------------------------------------- 25
10 Disassembly and Assembly Instructions--------------- 26
10.1. Screw Types----------------------------------------------- 26
10.2. Disassembly Flow Chart ------------------------------- 27
10.3. Main Components and P.C.B. Locations ----------28
© Panasonic Corporation 2013. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
10.4. Disassembly of Top Cabinet---------------------------29
10.5. Disassembly of Front Panel Unit---------------------30
10.6. Disassembly of Panel P.C.B., Memory LED
P.C.B. and Music Port P.C.B.-------------------------31
10.7. Disassembly of Remote Sensor P.C.B.-------------33
10.8. Disassembly of USB P.C.B. ---------------------------33
10.9. Disassembly of CD Lid----------------------------------34
10.10. Disassembly of Rear Panel----------------------------34
10.11. Disassembly of Main P.C.B. ---------------------------35
10.12. Disassembly of SMPS P.C.B. -------------------------37
10.13. Disassembly of CD Mechanism Unit----------------37
10.14. Disassembly of CD Interface P.C.B.-----------------39
10.15. Disassembly of Fan Unit -------------------------------39
11 Service Position -------------------------------------------------40
11.1. Checking of Panel P.C.B. ------------------------------40
11.2. Checking of Main P.C.B. (Side A)--------------------40
11.3. Checking of Main P.C.B. (Side B)--------------------40
11.4. Checking of SMPS P.C.B.------------------------------41
12 Block Diagram ---------------------------------------------------43
12.1. Servo & System Control--------------------------------43
12.2. Audio --------------------------------------------------------45
12.3. Power Supply ---------------------------------------------47
13 Wiring Connection Diagram---------------------------------49
14 Schematic Diagram---------------------------------------------51
14.1. Schematic Diagram Notes-----------------------------51
14.2. MAIN (CD Servo/Micon/Damp) Circuit -------------53
14.3. Panel Circuit-----------------------------------------------66
14.4. USB, Music Port, Memory LED & Remote
Sensor Circuit---------------------------------------------68
14.5. SMPS Circuit----------------------------------------------69
14.6. CD Interface Circuit--------------------------------------71
15 Printed Circuit Board ------------------------------------------72
15.1. Main P.C.B. ------------------------------------------------72
15.2. Panel, USB, Music Port & Memory LED
P.C.B.--------------------------------------------------------74
15.3. SMPS P.C.B. ----------------------------------------------75
15.4. Remote Sensor & CD Interface P.C.B. -------------76
16 Appendix Information of Schematic Diagram --------- 77
16.1. Voltage & Waveform Chart ----------------------------77
17 Exploded View and Replacement Parts List-----------85
17.1. Exploded View and Mechanical replacement
Part List-----------------------------------------------------85
17.2. Electrical Replacement Part List ---------------------91
2
1 Safety Precautions
1.1. General Guidelines
1. IMPORTANT SAFETY NOTICE
There are special components used in this equipment wh ich are important for safety. These parts are marked by in the
Schematic Diagrams, Circuit Board Layout, Exploded Views and Replacement Parts List. It is essential that these critical parts
should be replaced with manufacturer’s specified parts to prevent X-RADIATION, shock, fire, or other hazards. Do not modify
the original design without permission of manufacturer.
2. An Isolation Transformer should always be used during the servicing of AC Adaptor whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal
injury from electrical shocks. It will also protect AC Adaptor from being damaged by accidental shorting that may occur during
servicing.
3. 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.
4. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
5. After servicing, make 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 1MΩ and 5.2MΩ.
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 1-1.
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 e quivalent)
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
1.2. Before Repair and Adjustment
Disconnect AC power to discharge unit AC Capacitors as such (C5701, C5702, C5703, C5704, C5705, C 5706, C5707, C5708)
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.
Current consumption at AC 220~240 V, 50/60 Hz in FM Tuner at volume minimum should be ~ 750 mA.
3
1.3. 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.
1.4. Caution For Fuse Replacement
4
1.5. 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
16 RGR0443G-B REAR PANEL
17 RKM0713-K1 TOP CABINET
301 RAE1036Z-V TRAVERSE ASS'Y
A2 K2CJ2YY00093 AC CORD
A3 RQT9793-L O/I BOOK (En)
PCB10 REP4965B SMPS P.C.B. (RTL)
DZ5701 D4EAY511A127 VARISTOR (E.S.D)
L5701 G0B353J00001 LINE FILTER
L5702 G0B183J00002 LINE FILTER
T5701 G4DYZ0000069 TRANSFORMER
T5751 G4DYZ0000065 TRANSFORMER
F1 K5D632BK0007 FUSE
PC5701 B3PBA0000579 PHOTO COUPLER
PC5702 B3PBA0000579 PHOTO COUPLER
PC5720 B3PBA0000579 PHOTO COUPLER
PC5799 B3PBA0000579 PHOTO COUPLER
P5701 K2AA2B000011 AC INLET
R5708 D0GF155JA048 1.5M 1/4W
R5709 D0GF155JA048 1.5M 1/4W
C5701 F0CAF104A105 0.1uF
C5702 F0CAF104A105 0.1uF
C5703 F0CAF104A105 0.1uF
C5704 F1BAF471A013 470pF
C5705 F1BAF471A013 470pF
C5706 F1BAF471A013 470pF
C5707 F1BAF471A013 470pF
C5708 F1BAF1020020 1000pF
5
2Warning
2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi-
tive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices.
The following techniques should be used to help reduce the incidence of component damage caused by electro static 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 assembl y on a conducti ve surface su ch 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 lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient 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: 790 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.
Figure 2-1
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 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 th an 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 contro l 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 du e to static electricity of clothes or human body. 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 unit may be d amaged due to electrostatic discharge generati ng 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.
Figure 2-2
9
2.5. Grounding for electrostatic breakdown prevention
• As for parts that use optical pick-up (laser diode), the optical pick-up is destroyed by the static electricity of the working environment.
Repair in the working environment that is grounded.
2.5.1. Worktable grounding
• Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed and ground the sheet.
2.5.2. Human body grounding
• Use the anti-static wrist strap to discharge the static electricity form your body Figure 2-3
Figure 2-3
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 followed b y supplement se rvice manual to b e filed with origin al se rvice
manual.
• Micro-processor:
1) The following components are supplied as an assembled part.
- Micro-processor IC, IC2006 (RFKWMAKX56LM)
11
3.1.1. Firmware Update Procedure
Start
Write encrypted UPD bin to CD-R
Turn On main set
Insert CD-R (with UPD bin) and
close
TOC reading
"CHECKING"
Writing starts:
"0%" -> "20%" -> "40%" ->
"60%" -> "80%" -> 100%"
"GOOD" display 3 sec
Set auto turn Off -> Cold Start
End
NG
"NO PLAY"
process end
12
4 Specifications
Power Consumption in st andby
mode
0.3 W (approximate)
Q Amplifier section
RMS output power stereo mode
Front Hi
250 W per channel (3 Ω), 1 kHz, 30% THD
Front Lo
250 W per channel (3 Ω), 100 Hz, 30% THD
Total RMS stereo mode power 1000 W (30% THD)
Q
Q Tuner, terminals section
QQ
Preset memory FM 30 stations
AM 15 stations
Frequency modulation (FM)
Frequency range
87.50 MHz to 108.00 MHz (50 kHz step)
Antenna terminals 75 Ω (unbalanced)
Amplitude modulation (AM)
Frequency range
522 kHz to 1629 kHz (9 kHz step)
520 kHz to 1630 kHz (10 kHz step)
Music port (front)
Sensitivity 100 mV, 4.7 kΩ
Terminal Stereo, 3.5 mm jack
AUX Input Pin jack
Q
Q Disc section
QQ
Discs played (8 cm or 12 cm) CD, CD-R/RW(CD-DA, MP3*)
Pick up
Wavelength 790 nm(CD)
Audio output
Number of channels 2 ch (FL, FR)
FL = Front left channel
FR = Front right channel
*MPEG-1 Layer 3
Note:
1. Specifications are subject to change without notice.
Mass and dimension are appropriate
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
Q System: SC-AKX56GN-K
Main Unit: SA-AKX56GN-K
Speakers System: SB-AKX56PN-K
Q
Q Internal memory section
QQ
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 510 songs
(use 128 kbps, approximately 1 song = 4 mins)
Q
Q USB section
QQ
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)
Q General
Power supply AC 220 to 240 V, 50 Hz
Power consumption 108 W
Dimensions (W x H x D) 220 mm x 334 mm x 250 mm
Mass 3.3 kg
Operating temperature range 0 °C to +40 °C
Operating humidity range 35% to 80% RH
(no condensation)
13
5 General/Introduction
5.1. Media Information
14
6 Location of Controls and Components
6.1. Remote Control Key Button Operation
15
6.2. Main Unit Key Button Operation
16
7 Installation Instructions
7.1. Speaker and A/C Connection
17
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
18
8.2. Doctor Mode Table
8.2.1. Doctor Mode Table 1
Doctor Mode
EEPROM
checksum
check
Item
DescriptionMode Name
To enter into Doctor Mode In CD Mode:
Displaying of
1. Year Develop.
2. Model Type.
3. ROM Type.
4. Firmware Version.
(Display 1)
Version No. (001 ~ 999) specific for each
firmware
(Display 2)
FL Display
(Decimal)1 2 3 4
Key Operation
Front Key
1. Press [ ] button on
main unit follow by [4]
and [7] on remote control.
2. To exit, press [DELETE]
button on remote control or,
press [POWER, /I] button on
Main Unit
In CD mode:
1. Enter into Doctor Mode
Checksum (Hex)
19
8.2.2. Doctor Mode Table 2
Item
DescriptionMode Name
Volume Setting
Check
FL Display Check
Traverse Test To determine the traverse unit
To check the volume setting of the
main unit.
To check the FL segment display.
All segments will light up while all LED
blink at 0.5s intervals.
operation for inner & outer access track.
In this mode,ensure the CD is in the
main unit.
FL Display
Press [7]: VOL50
Press [8]: VOL35
Press [9]: VOL0
The counter will
increment by one.
When reach 99999999
will change to 00000000
Cancellation Display
Key Operation
Front Key
In Doctor Mode:
1. Press [7], [8], [9] button on
the remote control.
Volume
In Doctor mode:
1. Press [1] button on the
remote control.
2. To cancel this mode, press
[0] button on the remote control.
In Doctor Mode:
1. Press [10] [1] [2] button
on the remote control.
Note: Refer to Section 8.3 Figure 8-2
.
for process flow
Reliability Test
(Combination)
Loading Test To determine the open & close
To determine the traverse unit
operation & open/close operation of the
mechanism.
In this mode,ensure the CD is in the
main unit.
Note: Refer to Section 8.3 Figure 8-3
for process flow
operation of the CD Mechanism Unit.
In this mode, the tray will open & close
automatically.
Note: Refer to Section 8.3 Figure 8-1
for process flow
2. To cancel this mode, press
[0] button on the remote control.
In Doctor Mode:
1. Press [10] [1] [5] button
on the remote control.
The counter will
increment by one.
When reach 99999999
will change to 00000000
Cancellation Display
2. To cancel this mode, press
[0] button on the remote control.
In Doctor Mode:
1. Press [10] [2] [1] button
on the remote control.
The counter will
increment by one.
When reach 99999999
will change to 00000000
Cancellation Display
2. To cancel this mode, press
[0] button on the remote control.
20
8.2.3. Doctor Mode Table 3
CD
Self- Adjustment
Test
Item
DescriptionMode Name
To display result of
self-adjustment for CD.
FL Display
Display of auto adjustment
result
Reference table:
ERROR Code
Status
Condition
0 1 2 4 6 8 A C E F
AOC1/AOC2 O O O O O O O O -
ABC2/ABC1 O - X O X O X O X -
nd
AOC1 O - O X X O O X X -
2
FAGC/TAGC O - O O O X X X X -
AGC2 O - O O O O O O 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).
Key Operation
Front Key
In Doctor Mode
:
1. Press [10] [1] [4] button
on the remote control.
To cancel this mode, press [0]
button on the remote control.
CD LSI Version
Check
For checking CD LSI Version and
checksum information.
(Display 1)
Year Develop
(Display 2)
ROM
Type
Checksum (Hex)
In Doctor Mode:
1. Press [4] button on the
remote control.
Version (Decimal)
after
2 sec
To cancel this mode, press [0]
button on the remote control.
21
8.3. Reliability Test Mode (CD Mechanism Unit)
Below is the process flow chart of the aging test for the CD Mechanism Unit .
OPEN
Operation
OPEN wait
for 1 s
CLOSE
Operation
CLOSE wait
for 4 s
Fig. 1. Reliability Test (Loading)
Count up
First Track
Access
First Track
Play 10 s
First Track
Access
First Track
Play 5 s
Last Track
Access
Last Track
Play 5 s
Fig. 2. Reliability Test (Traverse)
Count up
Last Track
Access
Last Track
Play 10 s
Open
Operation
Open wait
for 1 s
CLOSE
Operation
Fig. 3. Reliability Test (Combination)
Count up
22
8.4. Self-Diagnostic Mode
Item
Mode Name
Self Diagnostic
Mode
Error code
information
Delete error
code
Cold Start To active cold start upon next AC
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)
power up when reset start is
execute the next time.
Description
Example:
FL Display
Key Operation
Front Key
Step 1: Select CD mode
(Ensure no disc is inserted).
Step 2: Press & hold [ ] button
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.
In self diagnostic mode:
1. Press [3] button on
the remote control.
/
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
23
8.5.2. CD Mechanism Error Code Table (CD Mechanism Unit)
Error Code Diagnostic Contents Description of error Automatic FL Display Remarks
CD H15 CD Open Abnormal During operation
CD H16 CD Closing Abnormal During operation
F26 Communication between
CD servo LSI and micro-p
abnormal.
POS_SW_R On fail to be
detected with 4 sec. Error
No. shall be clear by force
or during cold start.
POS_SW_CEN On fail to
be detected with 4 sec.
Error No. shall be clear by
force or during cold start.
During switch to CD function, if SENSE = “L” within
failsafe time of 20ms.
8.6. Sales Demonstration Lock Function
8.6.1. Entering into Sales demonstration lock mode
Here is the procedures to enter into the Sales demonstration lock mode.
Step 1: Turn on the unit.
Step 2: Select to any mode function.
Step 3: Press and hold [
The display will show upon entering into this mode for 2 sec..
OPEN/CLOSE] and [CD] keys for 5 sec or more.
Press [
next error.
Press [
next error.
Press [
next error.
] on main unit for
] on main unit for
] on main unit for
Note: [
OPEN/CLOSE] button is invalid and the main unit displays “LOCKED” while the lock function mode is entered.
8.6.2. Cancellation of Sales demonstration lock mode
Step 1: Turn on the unit.
Step 2: Select to any mode function.
Step 3: Set volume to Vol 19.
Step 4: Press and hold [
The display will show upon entering into this mode for 2 sec..
OPEN/CLOSE] and [CD] keys for 5 sec or more.
24
9 Troubleshooting Guide
"Contents for this section is not available at time of issue"
25
10 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 replacement 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 Front Panel Unit
• Disassembly of Panel P.C.B., Memory LED P.C.B. and Music Port P.C.B.
• Disassembly of Remote Sensor P.C.B.
• Disassembly of USB P.C.B.
• Disassembly of CD Lid
• Disassembly of Rear Panel
• Disassembly of Main P.C.B.
• Disassembly of SMPS P.C.B.
• Disassembly of CD Mechanism Unit
• Disassembly of CD Interface P.C.B.
• Disassembly of Fan Unit
10.1. Screw Types
26
10.2. Disassembly Flow Chart
10.4.
Top Cabinet
10.11. Main P.C.B.
10.10. Rear Panel
10.5 Front Panel Unit
10.13. CD Mechanism
Unit
10.14. CD Interface
P.C.B.
10.12. SMPS P.C.B.
10.15.
10.6.
Fan Unit
10.7.
Panel P.C.B.,
Memory LED
P.C.B. and
Music Port P.C.B.
10.8.
Remote Sensor
P.C.B.
10.9.
USB P.C.B.
CD Lid
27
10.3. Main Components and P.C.B. Locations
28
10.4. Disassembly of Top Cabinet
Step 1 Remove 2 screws on each side.
Step 2 Remove 5 screws.
Step 3 Slightly release both sides of Top Cabinet.
Step 4 Slightly lift up the Top Cabinet in an outward direction as
shown.
Step 5 Remove the Top Cabinet.
Caution: During assembling, ensure that the Top Cabinet
are properly inserted into the Front Panel Unit.
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10.5. Disassembly of Front Panel Unit
• Refer to “Disassembly of To p Cab inet”.
Step 1 Detach 30P FFC at the connector (CN2004) on Main
P.C.B..
Step 2 Detach 5P Cable at the connector (CN2001) on Main
P.C.B..
Step 3 Remove 1 screw.
Step 5 Release tab at the right side of Front Panel Unit.
Step 4 Release tab at the left side of Front Panel Unit.
Step 6 Release tabs at bottom.
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