Panasonic SA-AK180PN User manual

© Panasonic Corporation 2009. All rights reserved.
Unauthorized copying and distribution is a violation
of law.
PSG0905023CE
CD Stereo System
Model No. SA-AK180PN
SA-AK180PU
Product Color: (K)...Black Type
TABLE OF CONTENTS PAGE PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Before Use (For PU only)-------------------------------- 3
1.3. Before Repair and Adjustment------------------------- 3
1.4. Protection Circuitry---------------------------------------- 4
1.5. Safety Parts Information--------------------------------- 4
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
Notes: This model’s CD Mechanism Unit is CR14C. Please refer to the original service manual
(Order No. MD0805031CE) for this mechanism

2
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. Disc Information ------------------------------------------15
6 Self-Diagnosis and Special Mode Setting --------------16
6.1. Doctor Mode Summary Table-------------------------16
6.2. Doctor Mode Table---------------------------------------16
6.3. Doctor Mode Summary Table [CD Mechanism
Unit (CR14C)]---------------------------------------------18
6.4. Service Mode Table [CD Mechanism Unit
(CR14C)] ---------------------------------------------------19
6.5. Reliability Test Mode (CD Mechanism Unit
CR14C)-----------------------------------------------------20
6.6. Error Code Table -----------------------------------------23
7 Troubleshooting Guide----------------------------------------25
7.1. Troubleshooting Guide for F61 and/or F76--------25
8 Service Fixture & Tools ---------------------------------------30
8.1. Service Tools and Equipment-------------------------30
9 Disassembly and Assembly Instructions---------------31
9.1. Disassembly Flow Chart--------------------------------32
9.2. Main Components and P.C.B. Locations-----------33
9.3. Disassembly of Top Cabinet---------------------------34
9.4. Disassembly of CD Mechanism Unit (CR14C) ---34
9.5. Disassembly of Rear Panel----------------------------36
9.6. Disassembly of Front Panel Assembly -------------37
9.7. Disassembly of Panel P.C.B.--------------------------38
9.8. Disassembly of Dynamic Bass Knob &
Dynamic Bass Button Unit-----------------------------39
9.9. Disassembly of CD Lid----------------------------------41
9.10. Disassembly of CD Servo P.C.B.---------------------41
9.11. Disassembly of D-Amp P.C.B. ------------------------42
9.12. Replacement of Audio Digital Power Amp IC
(IC5000) ----------------------------------------------------43
9.13. Disassembly of Main P.C.B.---------------------------44
9.14. Disassembly of SMPS P.C.B.-------------------------45
9.15. Replacement of Switching Regulator IC
(IC5701) ----------------------------------------------------45
9.16. Replacement of Rectifier Diode (D5702)-----------46
9.17. Replacement of Regulator Diode (D5801)---------48
9.18. Replacement of Regulator Diode (D5802)---------48
9.19. Replacement of Regulator Diode (D5803)---------49
9.20. Disassembly of AC Inlet P.C.B.-----------------------50
9.21. Disassembly of USB P.C.B. ---------------------------51
9.22. Disassembly of MPort/Headphone P.C.B. ---------52
9.23. Disassembly of Voltage Selector P.C.B. (For
PU only) ----------------------------------------------------52
9.24. Replacement of Traverse Unit Assembly ----------53
10 Service Position-------------------------------------------------55
10.1. Checking and Repairing of Main P.C.B.------------55
10.2. Checking and Repairing of Panel P.C.B., USB
P.C.B. & MPORT/Headphone P.C.B.----------------55
10.3. Checking and Repairing of D-Amp P.C.B. ---------55
10.4. Checking and Repairing of SMPS and AC
Inlet P.C.B.-------------------------------------------------56
11 Voltage & Waveform Chart-----------------------------------57
11.1. CD Servo P.C.B.------------------------------------------57
11.2. Main P.C.B. (1/2) -----------------------------------------58
11.3. Main P.C.B. (2/2) -----------------------------------------59
11.4. Panel P.C.B.-----------------------------------------------59
11.5. USB P.C.B.-------------------------------------------------60
11.6. D-Amp P.C.B. ---------------------------------------------60
11.7. SMPS P.C.B.---------------------------------------------- 61
11.8. Waveform Table (1/2)----------------------------------- 62
11.9. Waveform Table (2/2)----------------------------------- 63
12 Illustration of ICs, Transistor and Diode---------------- 64
13 Block Diagram--------------------------------------------------- 65
13.1. CD Servo -------------------------------------------------- 65
13.2. Main (1/2)-------------------------------------------------- 66
13.3. Main (2/2)-------------------------------------------------- 67
13.4. D-Amp------------------------------------------------------ 68
13.5. Power------------------------------------------------------- 69
14 Wiring Connection Diagram -------------------------------- 70
15 Schematic Diagram Notes----------------------------------- 71
16 Schematic Diagram-------------------------------------------- 73
16.1. CD Servo Circuit----------------------------------------- 73
16.2. Main Circuit------------------------------------------------ 74
16.3. Panel Circuit ---------------------------------------------- 78
16.4. USB Circuit------------------------------------------------ 79
16.5. D-Amp Circuit--------------------------------------------- 80
16.6. SMPS Circuit---------------------------------------------- 81
16.7. MPORT/Headphone, AC Inlet Circuit &
Voltage Selector (For PU only) Circuit-------------- 83
17 Printed Circuit Board------------------------------------------ 84
17.1. CD Servo & MPORT/Headphone P.C.B. ---------- 84
17.2. Main P.C.B.------------------------------------------------ 85
17.3. Panel P.C.B.----------------------------------------------- 86
17.4. USB, AC Inlet P.C.B. & Voltage Selector (For
PU only) P.C.B.------------------------------------------- 87
17.5. D-Amp P.C.B.--------------------------------------------- 88
17.6. SMPS P.C.B.---------------------------------------------- 89
18 Terminal Function of ICs------------------------------------- 91
18.1. IC2801 (RFKWMAK180PN): IC MICRO-
PROCESSOR -------------------------------------------- 91
18.2. IC6901(C0HBB0000057): IC FL Driver------------ 91
19 Exploded View and Replacement Parts List----------- 93
19.1. Exploded View and Mechanical Replacement
Part List ---------------------------------------------------- 93
19.2. Electrical Replacement Part List--------------------- 99
20 Schematic Diagram for printing with letter size-----107

3
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 1MΩand 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.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent)
may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. 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 PU 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, C5705, C5706, C5707) 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 120V, 60 Hz in NO SIGNAL mode volume minimal should be ~ 500 mA. (PN)
Current consumption at AC 110V~127V/ 220V~240V, 50/60 Hz in NO SIGNAL mode volume minimal should be ~ 500 mA. (PU)

4
1.3.1. Caution for fuse replacement
1.4. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
• No sound is heard when the power is turned on.
• Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.5. Safety 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 & 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
11 REXX0684-1 BLACK WIRE (AC INLET-SMPS) PN
11 REZX0023-1 BLACK WIRE (AC INLET-SMPS) PU
12 REXX0685-1 RED WIRE (AC INLET-SMPS) PN
12 REZX0024-1 RED WIRE (AC INLET-SMPS) PU
21 RGRX0070V-G REAR PANEL PN
21 RGRX0070W-C REAR PANEL PU
40 RKMX0144A-K TOP CABINET
340 RAEX0190A-V TRAVERSE ASS'Y (W/O CD SERVO) (RTL)
A2 K2CB2CB00021 AC CORD PN
A2 K2CQ2CA00007 AC CORD PU
A3 RQTX0305-M O/I BOOK (Sp) PN
A3 RQTX0306-M O/I BOOK (En) PN
A3 RQTX0307-M O/I BOOK (Sp) PU
PCB1 REPX0714A SMPS P.C.B. (RTL) PN
PCB1 REPX0714C SMPS P.C.B. (RTL) PU
PCB4 REPX0714A AC INLET P.C.B. (RTL) PN
PCB4 REPX0714C AC INLET P.C.B. (RTL) PU
PCB9 REPX0714C VOLTAGE SELECTOR P.C.B. (RTL) PU
DZ5701 ERZV10V511CS ZNR
S5701 K0ABCA000007 SW VOLTAGE SELECTOR PU
L5703 ELF21N024A LINE FILTER
T2900 G4D1A0000117 SWITCHING TRANSFORMER
T5701 ETS42BM18GAD MAIN TRANSFORMER PN
T5701 ETS42BN1A6AD MAIN TRANSFORMER PU
T5751 ETS19AB256AG SUB TRANSFORMER
PC5701 B3PBA0000402 PHOTO COUPLER
PC5702 B3PBA0000402 PHOTO COUPLER
PC5720 B3PBA0000402 PHOTO COUPLER
PC5799 B3PBA0000402 PHOTO COUPLER
F1 K5D802APA008 FUSE PN
F1 K5D802BNA005 FUSE PU
FP2901 K5G4013A0001 FUSE PROTECTOR
TH5001 D4CC11040013 THERMISTOR
TH5701 D4CAA5R10001 THERMISTOR PN
TH5702 D4CAC8R00002 THERMISTOR PU

5
TH5860 D4CC11040013 THERMISTOR
P5701 K2AA2B000017 AC INLET PU
P5701 K2AB2B000011 AC INLET PN
C5700 F1BAF1020020 1000pF
C5701 F0CAF334A087 0.33uF
C5703 F0C2H1040001 0.1uF 500V PU
C5703 F0CAF224A085 0.22uF PN
C5704 F1BAF1020020 1000pF
C5705 F1BAF1020020 1000pF
C5706 F1BAF1020020 1000pF PU
C5707 F1BAF1020020 1000pF PU
Safety Ref. No. Part No. Part Name & Description Remarks

6
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 Elec-
trostatically 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 damage
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 alumi-
num 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 compara-
ble 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) suf-
ficient to damage an ES device).

7
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.

8
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
Service caution for repair work using Lead Free Solder (PbF)
• The lead free solder has to be used when repairing the equipment for which the lead free solder is used.
(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)
• To put lead free solder, it should be well molten and mixed with the original lead free solder.
• Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
• Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the
lead free solder.
• Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30 degrees
C (662±86°F).
Recommended Lead Free Solder (Service Parts Route.)
• The following 3 types of lead free solder are available through the service parts route.
RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)
Note
* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)

9
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 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 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 flexi-
ble 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 electric-
ity 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.

10
2.4.2.2. Human body grounding
1. Use the anti-static wrist strap to discharge the static electricity form your body.

11
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 will be followed by supplement service manual to be filed with original service
manual.
• CD Mechanism Unit (CR14C):
1) This model uses CD Mechanism Unit (CR14C).
2) This service manual does not contain the following information on CD Mechanism Unit (CR14C)
- Schematic Diagram, Block Diagram and P.C.B. layout of CD Mechanism Unit (CR14C) P.C.B.
- Parts List for individual parts of CD Mechanism Unit (CR14C).
- Exploded View and Part List for individual parts of CD Mechanism Unit (CR14C).
Please refer to original service manual (Order No. MD0805031CE)
• Micro-processor & EEPROM IC:
1) The following components are supplied as an assembled part.
- Micro-processor IC, IC2801 (RFKWMAK180PN).
- EEPROM IC, IC2951 (RFKWEAK180PN).
• Speaker system:
1) The information, please refer to Original Service Manual, SB-AK280PN-K (Order No. PSG0902012CE).

12
4 Specifications
Main unit SA-AK180PN/PU-K
QAMPLIFIER SECTION
RMS Output Power Stereo Mode
Front CH (both channels driven):
125 W per channel (3 Ω), 1 kHz, 10% THD
Total RMS stereo mode power: 250 W
PMPO output power (PN only): 2800 W
QFM/AM TUNER, TERMINALS SECTION
Preset station: FM 30 stations
AM 15 stations
Frequency Modulation (FM)
Frequency range: 87.9-107.9 MHz (200 kHz step)
87.5-108.0 MHz (100 kHz step)
Antenna terminals: 75 Ω(unbalanced)
Amplitude Modulation (AM)
Frequency range (PN only): 512 to 1710 kHz (10 kHz step)
Frequency range (PU only): 522 to 1629 kHz (9 kHz step)
520 to 1630 kHz (10 kHz step)
AUX Input: RCA pin jack
Music Port (Front Jack):
Sensitivity 100 mV, 4.7 kΩ
Terminal: Stereo, 3.5 mm jack
Headphone jack
Terminal: Stereo, 3.5 mm jack
QDISC 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
Pick up
Wavelength: 795 nm (CD)
Audio output (Disc)
Number of channels 2 (FL, FR)
QUSB 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: Max. 500 mA
QGENERAL
Power Supply (PN) AC 120 V, 60 Hz
Power Supply (PU) AC 110 to 127/ 220 to 240 V, 50/60
Hz
Power Consumption 57 W
Dimensions (WxHxD) 250 x 333 x 310 mm
Mass 4.1 kg
Operating temperature
range 0 to 40 °C
Operating humidity range 35 to 80% RH
(no condensation)
Power Consumption in
standby mode (PN only): 0.3 W (approx.)
Power Consumption in
standby mode (PU only): 0.4 W (approx.)
Note:
1. Specifications are subject to change without notice.
Mass and dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum
analyzer.
QSystem: SC-AK180PN-K Main Unit: SA-AK180PN-K
Speaker System: SB-AK280PN-K
QSystem: SC-AK180PU-K Main Unit: SA-AK180PU-K
Speaker System: SB-AK280PN-K

13
5 Location of Controls and Components
5.1. Main Unit Key Button Operation
Reduce the volume level and connect the headphones.
Headphones plug type: 3.5 mm stereo (not included).
Avoid listening for prolonged periods of time to
prevent hearing damage.
Excessive sound pressure from earphones and
headphones can cause hearing loss.
Headphone jack
Press to switch the unit from on to standby mode or vice versa.
In standby mode, the unit is still consuming a small amount of
power.
USB play or pause
Standby/on switch (
/l, POWER)
[
Skip, rewind, fast forward.
[ ] / [
USB port
MUSIC PORT
AUX
[MANUAL EQ] selection
[
[
USB,
[ , OPEN/CLOSE]
Disc tray open or close
[ , EXCHANGE]
Multiple discs change
CD play or pause
Disc direct play
Tuner (FM/AM) Selection
Increase or decrease the pitch
[BASS CONTROL]
This feature reproduce the frequencies lost during
recording to give you a sound closer to original.
[RE-MASTER]
Skip and play your desired track
[Track]
[
[
CD,
Stop playback, demonstration function
13
14
15
16
17
18
19
20
21
22
MUSIC
PORT
5
6
7
8
9
10
11
12
13
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
21
22
Display Panel
Disc Ttrays
Remote control signal sensor
Volume control
Music port jack

14
5.2. Remote Control Key Button Operation
Standby/on switch ( /l, POWER)
USB play or pause
5
10
11
17
21
23
Select and play the
other loaded discs.
Numberic selection
Delete function
Program function
FM selection
Skip, rewind, fast forward,
Tape Program Sensor (TPS),
sound quality adjustment,
time adjustment
RE-MASTER selection
Manual EQ selection
D.BASS selection Album selection
Display function
Music Port selection
AUX
Disc play and pause
Volume Adjustment
Auto Preset function
Clock or timer setting
Tune mode
Play timer or record timer setting
Sleep timer
Auto off
Muting function
Stop playback, demonstration function
Play mode function
Preset EQ selection
Repeat function
Dimmer function
FM mode
Tuner (FM/AM) Selection
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46

15
5.3. Disc Information
NOTE about using a DualDisc
NOTE on MP3
Files are treated as tracks and folders are treated as
albums.
This unit can access up to 999 tracks, 255 albums and
20 sessions.
Disc must conform to ISO9660 level 1 or 2 (except for
extended formats).
To play in a certain order, pre x the folder and le
names with 3-digits numbers in the order you want to
play them.
Whe NOT MP3/ERROR1 ppears on the display, an
unsupported MP3 format is being played. The unit will
skip that track and play the next one.
Limitations on MP3 play
If you have recorded MP3 on the same disc as CD-DA,
only the format recorded in the rst session can be
played.
Some MP3s may not be played due to the condition of
the disc or recording.
Recordings will not necessarily be played in the order
you recorded them.
This unit can access up to 99 tracks.
This unit can play MP3 les and CD-DA format audio
CD-R/RW that have been nalized.
It may not be able to play some CD-R/RW due to the
condition of the recording.
Do not use irregularly shaped disc.
Do not use disc with labels and stickers that are
coming off or with adhesive exuding from under labels
and stickers.
Do not attach extra labels or stickers on the disc.
Do not write anything on the disc.
NOTE on CDs
The digital audio content side of a DualDisc does not
meet the technical speci cations of the Compact Disc
Digital Audio (CD-DA) format so playback may not be
possible.
NOTE on USB
Compatible devices
Devices which are de ned as USB mass storage class:
USB devices that support bulk only transfer.
USB devices that support USB 2.0 full speed.
Supported format
Folders are de ned as album.
Files are de ned as track.
Track must have the extensio .mp3 .MP3 .
CBI (Control/Bulk/Interrupt) is not supported.
A device using NTFS le system is not supported.
[Only FAT 12/16/32 (File Allocation Table 12/16/32)
le system is supported.]
Depending on the sector size, some les may not work.
Maximum album: 255 albums
Maximum track: 2500 tracks
Maximum track in one album: 999 tracks

16
6 Self-Diagnosis and Special Mode Setting
This unit is equipped with features od self-diagnosis & special mode setting for checking the function & reliability.
Special Note: Checking of the reliability (ageing) & changer operation must be carry out to ensure good working condition
in unit.
6.1. Doctor Mode Summary Table
Main unit buttons Remote control unit buttons Application Note
[] [4], [7] Doctor Mode (Refer to the section “6.2.1. Doctor Mode
Table 1” for more information.)
Doctor Mode Main unit [ ]
or
[IDDF] (special Remocon)
Display firmware version and EEPROM check-
sum
[2] FL DIsplay check
[3] Operation keys & all segment display check
mode
[4] Cold Start when reset start is executed the
time
[7] Volume Setting Check 50
[8] Volume Setting Check 35
[9] Volume Setting Check 27
[>10] Volume Setting Check 0
[DISC] CR14 Inspection
[MUTE] Clock Setting Check
[1] MP3 DISC check
[D.Bass] EQ Heavy
[DEL] USB MP3 check
[DISPLAY] Tuner checking
[FM MODE] FM Tuning check
[OK] Exit inspection mode
[PRESET EQ] EQ Off
[] AM OK/ NG (1000 kHz)
[] FM OK/ NG (98.1 MHz)
[>] Tuner STEREO/ forced MONO

17
6.2. Doctor Mode Table
Below is the various modes for checking:-
6.2.1. Doctor Mode Table 1
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Doctor Mode
1. The check Sum of PPROM and firmware
version will be display.
* ROM correction.
* Firmware Version No:
If there is no PROM Correction.
checksum: (Condition 1):
Opecon
Version
No Correction
Point Data
PROM Checksum
(if applicable)
Firmware
Version (D C)
(Display 1)
If the PROM version matches, checksum
[YYYY] is displayed.
If the version of the PROM does not
match or not working properly [NG] is
displayed
checksum: (Condition 2):
checksum: (Condition 3):
Checksum
value (H X)
applicable
when the
PROM IC
is installed
Firmware
Version (D C)
Firmware
different from
set
Firmware
Version (D C)
To enter into Doctor Mode for checking
of variuos items and displaying
PROM and firmware version.
Note: The micro-processor version
as shown is an example. It will be
revise when there is an update.
FL Display sequence:
Display 1 2.
In CD Mode:
1. Press [ ] button
on main unit follow by [4]
and [7] on remote control.
-D MO
To exist, press [ok] button on
remote control or press
[ /I, POW R] button on main
unit or remote control.

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6.2.2. Doctor Mode Table 2
6.3. Doctor Mode Summary Table [CD Mechanism Unit (CR14C)]
Main buttons Remote control unit buttons Application Note
[STOP] + [ /FF/ ] - Self-Diagnostic Mode. (Refer to the section “6.4
Service Mode Table [CD
Mechanism Unit
(CR14C)]” for more infor-
mation.)
[1] [ Open Close] - Service Mode.
In Self Diagnostic Mode [1] Reliability 1 (Load)
[2] Reliability 2 (Cycle)
[3] Reliability 3 (Combi)
FL Display
Key Operation
Front Key
Item
DescriptionMode Name
Cold Start
Clock Setting
Check
Volume Setting
Check
FL Display
Check
Operation keys
& all segment
display check
mode
o active cold start upon next AC
power up when reset start is execute
the next time.
o indicate that a clock time was set
properly.
o check the volume setting of a main
unit.
o check the FL segment display
(All segment will light up).
CR14
Inspection
o check the function operation of
mechanism unit
Press [7]: VOLUME50
Press [8]: VOLUME35
Press [9]: VOLUME27
Press [>10]: VOLUME0
In Doctor mode:
1. Press [4] button on
remote control.
In Doctor mode:
1. Press [MU E] button on
remote control.
In Doctor mode:
1. Press [3] button on
remote control.
In Doctor mode:
1. Press [7],[8],[9],[>10]
button on remote control.
o exist, press [ok] button on
remote control or press
[ /I, POWER] button on main
unit or remote control.
o exist, press [ok] button on
remote control or press
[ /I, POWER] button on main
unit or remote control.
o exist, press [ok] button on
remote control.
In Doctor mode:
1. Press [2] button on
remote control.
In Doctor mode:
1. Press [DISC] button on
remote control.
Volume
FL Display and all LED shall be all OFF.
When the keys of the main set are
pressed,the various corresponding grids
and segments of the FL display shall light
up in any sequence.When all the keys are
pressed and detected, all segment
and LED will ON.
o exist, press any key

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6.4. Service Mode Table [CD Mechanism Unit (CR14C)]
The counter will
increment by one.
When reach 99999
will change to 00000
In this mode, the trays are loaded &
unloaded.
In self-diagnostic mode, press [1]
button on remote control.
To exit, press [ ] button on the
main unit or remote control unit.
Reliability
1
(Load cycle Test)
To determine open/close operation of
the mechanism (all trays).
In self-diagnostic mode, press [2]
button on remote control.
To exit, press [ ] button on the
main unit or remote control unit.
Reliability
2
(Traverse Cycle
Test)
To determine playability operation.
In self-diagnostic mode, press [3]
button on remote control.
To exit, press [ ] button on the
main unit or remote control unit.
Reliability
3
(Combi Cycle
Test)
The combine test for both load &
traverse cycle test.
/l
/l
/l
Display 1
Display 2
The counter will
increment by one.
When reach 99999
will change to 00000
Display 1
Display 2
The counter will
increment by one.
When reach 99999
will change to 00000
Display 1
Display 2
In self-diagnostic mode, press [
Open/ Close] button on main unit.
To exit, power off the main unit
Press [EXCHANGE] on main unit
for error code.
FL Display Key Operation
Front Key
Item
Description
Mode Name
In AUX mode (ensure no disc is
inserted):
Press and hold [STOP] button for 2
seconds, followed by [ /FF/ ]
button on the main unit.
To exit, press [ , AC IN] button on
main unit or remote control unit.
To enter into self-diagnostic checking
for CR14C mechanism.
Self-Diagnostic
Mode
To unlock the mechanism unit for
service.
In this mode, the disassembly of CR14
can be carry out. (Refer to original
service manual for CR14)
Service Mode
/l

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6.5. Reliability Test Mode (CD Mechanism Unit CR14C)
Below is the progress flow chart of ageing for the Mechanism unit (CR14C).
Fig. 1
Fig. 2