Panasonic RX-D50EE User manual

PSG1004006CE
Portable Stereo CD System
Model No. RX-D50EE
Product Color : (S)...Silver Type
Notes: Please refer to the ori inal service manual for:
• CD Mechanism Unit (DLS6F), Order No. PSG1002024AE
A WARNING
This service information is desi ned for experienced repair technicians only and is not desi ned for use by the eneral public.
It does not contain warnin s or cautions to advise non-technical individuals of potential dan ers in attemptin to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.
IMPORTANT SAFETY NOTICE
There are pecial component u ed in thi equipment which are important for afety. The e part are marked by A in the Schematic
Diagram , Circuit Board Diagram , Exploded View and Replacement Part Li t. It i e ential that the e critical part hould be replaced
with manufacturer' pecified part to prevent hock, fire or other hazard . Do not modify the original de ign without permi ion of
manufacturer.
TABLE OF CONTENTS PAGE
1 Safety Precaution ---------------------------------------------------- 3
1.1. General Guideline -------------------------------------------- 3
1.2. Before Repair and Adju tment --------------------------- 4
1.3. Caution For Fu e Replacement -------------------------- 4
1.4. Protection Circuitry -------------------------------------------- 4
1.5. Safety Part Information---------------------------------------4
2 W arning---------------------------------------------------------------------5
2.1. Prevention of Electro Static Di charge (ESD)
to Electro tatically Sen itive (ES) Device -----------5
2.2. Precaution of La er Diode ---------------------------------- 6
2.3. Service caution ba ed on Legal re triction -------- 7
2.4. Handling Precaution for Traver e Unit ---------------- 8
PAGE
3 Service Navigation----------------------------------------------------10
3.1. Service Information--------------------------------------------10
4 Specification ------------------------------------------------------------11
5 Location of Control and Component --------------------- 12
5.1. Main Unit and Remote Control Key Button
Operation --------------------------------------------------------12
5.2. Di c Information------------------------------------------------ 13
6 Self Diagno tic and Doctor Mode Setting ---------------- 14
6.1. Self Diagno tic M ode ---------------------------------------- 14
6.2. Doctor Mode-----------------------------------------------------15
7 Service Fixture & Tool ---------------------------------------------19
8 Di a embly and A embly In truction ------------------20
Panasonic' © Pana onic Corporation 2010. All right re erved.
Unauthorized copying and di tribution i a violation of
law.

8.1. Di a embly flow chart ---------------------------------
8.2. Main Part Location Diagram ------------------------
8.3. Di a embly of Top Cabinet A embly-----------
8.4. Di a embly of Mu ic P ort----------------------------
8.5. Di a embly of Front Panel A embly-----------
8.6. Di a embly of Panel P.C.B., Standby P.C.B.
and Volume P.C.B. ----------------------------------------
8.7. Di a embly of Woofer Speaker (SP1)-----------
8.8. Di a embly of Woofer Speaker (SP2)-----------
8.9. Di a embly of CD Lid-----------------------------------
8.10. Di a embly of Deck Mechani m Unit-----------
8.11. Di a embly of Deck P.C.B.---------------------------
8.12. Di a embly of Ca ette Lid -------------------------
8.13. Di a embly of Mecha Bottom Cover ------------
8.14. Di a embly of Power P.C.B. ------------------------
8.15. Di a embly of Main P.C.B. --------------------------
8.16. Replacement of Tran i or (Q4107)-----------------
8.17. Replacement of Power IC (IC4101) ---------------
8.18. Di a embly of CD Mechani m Unit --------------
8.19. Di a embly of CD Servo P.C.B.--------------------
8.20. Di a embly of Battery (1) P.C.B. ------------------
8.21. Di a embly of Battery (2) P.C.B. ------------------
9 Di a embly and A embly of Traver e U n it -----
9.1. Di a embling Procedure ----------------------------
9.2. A embling Procedure-----------------------------------
10 Service Po ition---------------------------------------------------
10.1. Checking & Repairing Deck P.C.B.-----------------
10.2. Checking & Repairing Panel P.C.B. ---------------
10.3. Checking & Repairing Power P.C.B. --------------
10.4. Checking & Repairing Main P.C.B.-----------------
10.5. Checking & Repairing CD Servo P.C.B. ---------
11 Mea urement and A dju tm ent -------------------------
11.1. Tuner Section -----------------------------------------------
11.2. Deck Mechani m Section------------------------------
12 Voltage Mea urement & Waveform Chart -------------
12.1. CD SERVO P.C.B. ----------------------------------------
12.2. MAIN P.C.B. (1/2) -----------------------------------------
12.3. MAIN P.C.B. (2/2) -----------------------------------------
12.4. DECK P.C.B. ------------------------------------------------
12.5. PANEL P.C.B.-----------------------------------------------
12.6. POWER P.C.B.---------------------------------------------
12.7. Waveform Chart--------------------------------------------
13 Illu tration of IC’ , Tran i tor and Diode ---------
14 W iring Connection Diagram ---------------------------------
15 Schematic Diagram N ote ------------------------------------
16 Schematic Diagram-----------------------------------------------
16.1. CD SERVO CIRCUIT------------------------------------
16.2. MAIN CIRCUIT (1/6)-------------------------------------
16.3. MAIN CIRCUIT (2/6)-------------------------------------
16.4. MAIN CIRCUIT (3/6)-------------------------------------
16.5. MAIN CIRCUIT (4/6)-------------------------------------
16.6. MAIN CIRCUIT (5/6)-------------------------------------
16.7. MAIN CIRCUIT (6/6)-------------------------------------
16.8. DECK CIRCUIT---------------------------------------------
16.9. PANEL, VOLUME & STANDBY CIRCUIT ------
16.10. POWER CIRCUIT -----------------------------------------
16.11. BATTERY (1), BATTERY (2) & MUSIC PORT
CIRCUIT-------------------------------------------------------
17 Printed Circuit Board--------------------------------------------
17.1. CD SERVO & MUSIC PORT P.C.B. ---------------
17.2. MAIN P.C.B. -------------------------------------------------
21 17.3. DECK, PANEL, VOLUME & STANDBY P.C.B.--- 76
22 17.4. POWER, BATTERY (1) & BATTERY (2)
23 P.C.B.----------------------------------------------------------------77
24 18 Terminal Function of IC’ -------------------------------------------79
24 18.1. IC7001 (MN6627954AMA) IC SERVO
PROCESSOR ------------------------------------------------- 79
25 18.2. IC7002 (BA5948FPE2) IC 4CH Drive------------------80
26 18.3. IC2100 (RFKWMD45EG-W) MICRO
27 PROCESSOR -------------------------------------------------- 80
27 19 Exploded View and Replacement Part L i t ------------- 83
28 19.1. Exploded View and Mechanical replacement
30 Part Li t ----------------------------------------------------------- 83
30 19.2. Electrical Replacement Part Li t ----------------------- 89
32
33
35
36
38
40
40
41
42
43
43
44
46
46
46
47
47
49
50
50
52
53
53
54
55
55
56
56
57
58
59
61
63
63
64
65
66
67
68
69
70
71
72
73
74
74
75
2

1 Safety Precautions
1.1. General Guidelines
1. When ervicing, ob erve the original lead dre . If a hort circuit i found, replace all part which have been overheated or
damaged by the hort circuit.
2. After ervicing, ee to it that all the protective device uch a in ulation barrier , in ulation paper hield are properly
in talled.
3. After ervicing, carry out the following leakage current check to prevent the cu tomer from being expo ed to hock hazard .
1.1.1. Leaka e Current Cold Check
1. Unplug the AC cord and connect a jumper between the two prong on the plug.
2. mea ure the re i tance value, with an ohmmeter between the jumpered AC plug and each expo ed metallic cabinet part on
the equipment uch a crewhead , connector , control haft , etc. When the expo ed metallic part ha a return path to the
cha i , the reading hould be between 1MQ and 5.2MQ. When the expo ed metal doe not have a return path to the cha 
i , the reading mu t be oo
1.1.2. Leaka e Current Hot Check
1. Plug the AC cord directly into the AC outlet. Do not u e an i olation tran former for thi check.
2. Connect a 1.5kQ, 10 watt re i tor, in parallel with a 0.15^F capacitor , between each expo ed metallic part on the et and a
good earth ground uch a a water pipe, a hown in Figure 1.
3. U e an AC voltmeter, with 1000 ohm /volt or more en itivity, to mea ure the potential acro the re i tor.
4. Check each expo ed metallic part, and mea ure the voltage at each point.
5. Rever e the AC plug in the AC outlet and repeat each of the above mea urement .
6. The potential at any point hould not exceed 0.75 volt RMS. A leakage current te ter (Simp on Model 229 or equivalent)
may be u ed to make the hot check , leakage current mu t not exceed 1/2 milliamp. In ca e a mea urement i out ide of the
limit pecified, there i a po ibility of a hock hazard, and the equipment hould be repaired and rechecked before it i
returned to the cu tomer.
Figure. 1
3

1.2. Before Repair and Adjustment
Caution : DO NOT SHORT-CIRCUIT DIRECTLY (with a crewdriver blade, for in tance), a thi may de troy olid tate device .
After repair are completed, re tore power gradually u ing a variac, to avoid overcurrent.
• Current con umption at AC 230V, 50Hz in TUNER mode at volume (min) hould be (~300 mA).
1.3. Caution For Fuse Replacement
(Manufacturer: Littelfu <Hnc., Type: 218, F5901, T2AL, 250V)
(M anufacturer: Littelfu e Inc., Type: 218, F5902, T1.6AL, 250V)
1.4. Protection Circuitry
The protection circuitry may have operated if either of the following condition are noticed:
• No ound i heard when the power i turned on.
• Sound top during a performance.
The function of thi circuitry i to prevent circuitry damage if, for example, the po itive and negative peaker connection wire are
" horted", or if peaker y tem with an impedance le than the indicated rated impedance of the amplifier are u ed.
If thi occur , follow the procedure outline below:
1. Turn off the power.
2. Determine the cau e of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry function , the unit will not operate unle the power i fir t turned off and then on again.
1.5. Safety Part Information
Safety Part Li t:
There are pecial component u ed in thi equipment which are important for afety.
The e part are marked by A in the Schematic Diagram , Exploded View & Replacement Part Li t. It i e ential that the e
critical part hould be replaced with manufacturer' pecified part to prevent hock, fire or other hazard . Do not modify the
original de ign without permi ion of manufacturer. Table 1
Safety Ref. No. Part No. Part Name & De cription Remark
A14 RKHN0005A-H HANDLE
A401 RD-DAPX001-V TRAVERSE UNIT
AA2 K2CQ2CA00007 AC CORD
AA3 RQTX1037-R O/I BOOK (Ru/Ur)
APCB3 REPNT0063E POWER P.C.B (RTL)
AL5901 ELF15N035AN LINE FILTER
AT5903 G4C4BAH00002 TRANSFORMER
AZ5902 ERZVA5Z471 ZNRSURGE
AF5901 K5D202BLA013 FUSE
AF5902 K5D162BLA013 FUSE
AFP4100 K5G502A00039 FUSE PROTECTOR
AFP5903 K5G502A00039 FUSE PROTECTOR
AJK5901 K2AA2B000014 AC INLET
AZA5901 K3GE1ZZ00001 FUSE HOLDER
AZA5902 K3GE1ZZ00001 FUSE HOLDER
AZA5903 K3GE1ZZ00001 FUSE HOLDER
AZA5904 K3GE1ZZ00001 FUSE HOLDER
4

2 Warnin
2.1. Prevention of Electro Static Dischar e (ESD) to Electrostatically Sensi
tive (ES) Devices
Some emiconductor ( olid tate) device can be damaged ea ily by tatic electricity. Such component commonly are called Elec
tro tatically Sen itive (ES) Device . Example of typical ES device are integrated circuit and ome field-effect tran i tor and
emiconductor “chip” component . The following technique hould be u ed to help reduce the incidence of component damage
cau ed by electro tatic di charge (ESD).
1. Immediately before handling any emiconductor component or emiconductor-equiped a embly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available di charging ESD wri t trap,
which hould be removed for potential hock rea on prior to applying power to the unit under te t.
2. After removing an electrical a embly equiped with ES device , place the a embly on a conductive urface uch a alumin
ium foil, to prevent electro tatic charge build up or expo ure of the a embly.
3. U e only a grounded-tip oldering iron to older or un older ES device .
4. U e only an anti- tatic older remover device. Some older removal device not cla ified a “anti- tatic (ESD protected)” can
generate electrical charge ufficient to damage ES device .
5. Do not u e freon-propelled chemical . The e can generate electrical charge ufficient to damage ES device .
6. Do not remove a replacement ES device from it protective package until immediately before you are ready to in tall it. (Mo t
replacement ES device are packaged with lead electrically horted together by conductive foam, aluminium foil or compara
ble conductive material).
7. Immediately before removing the protective material from the lead of a replacement ES device, touch the protective material
to the cha i or circuit a embly into which the device will be in talled.
Caution :
Be ure no power i applied to the cha i or circuit, and ob erve all other afety precaution .
8. Minimize bodily motion when handling unpackaged replacement ES device . (Otherwi e harmle motion uch a the
bru hing together of your clothe fabric or the lifting of your foot from a carpeted floor can generate tatic electricity (ESD) uf
ficient to damage an ES device).
5

2.2. Precaution of Laser Diode
CAUTION!
THIS PRODUCT UTILIZES A LASER.
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT
IN HAZARDOUS RADIATION EXPOSURE.
Caution:
Thi product utilize a la er diode with the unit turned "on", invi ible la er radiation i emitted from the pickup len .
Wavelength: 795 nm (CD)
Maximum output radiation power from pickup: 100 ^W/VDE
La er radiation from the pickup unit i afety level, but be ure the following :
1. Do not di a emble the pickup unit, ince radiation from expo ed la er diode i dangerou .
2. Do not adju t the variable re i tor on the pickup unit. It wa already adju ted.
3. Do not look at the focu len u ing optical in trument .
4. Recommend not to look at pickup len for a long time.
6

2.3. Service caution based on Le al restrictions
2.3.1. General description about Lead Free Solder (PbF)
The lead free older ha been u ed in the mounting proce of all electrical component on the printed circuit board u ed for thi
equipment in con idering the globally environmental con ervation.
The normal older i the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free older i the alloy mainly con i t of tin
(Sn), ilver (Ag) and Copper (Cu), and the melting point of the lead free older i higher approx.30 degree C (86°F) more than that
of the normal older.
Definition of PCB Lead Free Solder being u ed
The letter of “PbF” i printed either foil ide or component ide on the PCB u ing the lead free older.
(See right figure)
Service caution for repair work u ing Lead Free Solder (PbF)
• The lead free older ha to be u ed when repairing the equipment for which the lead free older i u ed.
(Definition: The letter of “PbF” i printed on the PCB u ing the lead free older.)
• To put lead free older, it hould be well molten and mixed with the original lead free older.
• Remove the remaining lead free older on the PCB cleanly for oldering of the new IC.
• Since the melting point of the lead free older i higher than that of the normal lead older, it take the longer time to melt the
lead free older.
• U e the oldering iron (more than 70W) equipped with the temperature control after etting the temperature at 350±30 degree
C (662±86°F).
Recommended Lead Free Solder (Service Part Route.)
• The following 3 type of lead free older are available through the ervice part 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%
PbF
7

2.4. Handlin Precaution for Traverse Unit
The la er diode in the optical pickup unit may break down due to tatic electricity of clothe or human body. Special care mu t be
taken avoid caution to electro tatic breakdown when ervicing and handling the la er diode in the traver e unit.
2.4.1. Cautions to Be Taken in Handlin the Optical Pickup Unit
The la er diode in the optical pickup unit may be damaged due to electro tatic di charge generating from clothe or human body.
Special care mu t be taken avoid caution to electro tatic di charge damage when ervicing the la er diode.
1. Do not give a con iderable hock to the optical pickup unit a it ha an extremely high-preci e tructure.
2. To prevent the la er diode from the electro tatic di charge damage, the flexible cable of the optical pickup unit removed
hould be hort-circuited with a hort pin or a clip.
3. The flexible cable may be cut off if an exce ive force i applied to it. U e caution when handling the flexible cable.
4. The anti tatic FPC i connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexi
ble cable, cut off the anti tatic FPC.
2.4.2. Groundin for electrostatic breakdown prevention
Some device uch a the CD player u e the optical pickup (la er diode) and the optical pickup will be damaged by tatic electricity
in the working environment. Proceed ervicing work under the working environment where grounding work i completed.
2.4.2.1. Worktable roundin
1. Put a conductive material ( heet) or iron heet on the area where the optical pickup i placed, and ground the heet.
8

2.4.2.2. Human body roundin
1. U e the anti- tatic wri t trap to di charge the tatic electricity form your body (Figure 2).
Figure 2
9

3 Service Navi ation
3.1. Service Information
Thi ervice manual contain technical information which will allow ervice per onnel' to under tand and ervice thi model.
Plea e place order u ing the part li t and not the drawing reference number .
If the circuit i changed or modified, thi information will be followed by upplement ervice manual to be filed with original ervice
manual.
• CD Mechani m Unit (DLS6F):
1) Thi model u e CD Mechani m Unit (DLS6F).
• Micro-proce or:
1) The following component are upplied a an a embled part.
• Micro-proce or IC, (IC2100) i upplied a a embled part (RFKWMD45EG-W).
10

4 Specifications
■ Amplifier Section
RMS output power stereo mode
Front Ch (both channels 3 W per channel (4 Q), 1 kHz, 10%
driven) THD
Total RMS stereo mode power 6 W
■ FM/AM Tuner, Terminal Section
Frequency Modulation (FM)
Frequency ran e
Amplitude Modulation (AM)
Frequency ran e
Headphone jack
Terminal
Music port (front) jack
Sensitivity
Terminal
87.50 MHz to 108.00 MHz (50 kHz
tep)
522 kHz to 1629 kHz (9 kHz tep)
520 kHz to 1630 kHz (10 kHz tep)
Stereo, 3.5 mm jack (32 Q)
100 mV, 4.7 kQ
Stereo, 3.5 mm jack
Mass 3.3 kg without batterie (3.9 kg with
batterie )
Operatin temperature ran e 0°C to +40°C
Operatin humidity ran e 35% to 80 % RH (no conden ation)
Power consumption in standby mode: 0.8 W (approximate)
Note :
1. Specification are ubject to change without notice .
Ma and dimen ion are approximate.
2. Total harmonic di tortion i mea ured by the digital pectrum ana
lyzer.
■ Disc Section
Disc played (8 cm or 12 cm)
(1) CD-Audio (CD-DA)
(2) CD-R/RW (CD-DA, MP3* formatted di c)
(3) MP3*
* MPEG-1 Layer 3, MPEG-2 Layer 3
Bit rate
MP3
Samplin frequency
CD
MP3
Decodin
Beam source
Frequency response
Number of channels
Wow and flutter
32 kbp to 320 kbp
44.1 kHz
32 kHz, 44.1 kHz, 48 kHz
16 bit linear
Semiconductor la er (wavelength
795 nm (CD))
40 Hz to 20kHz
2 channel, tereo
Le than po ible mea urement
data
■ Cassette Deck Section
Track system
Monitor system
Recordin system
Erase system
Overall frequency response
NORMAL
4 track, 2 channel, tereo
Variable ound monitor
AC bia 84 kHz
Multi pole magnet
50 Hz to 12 kHz
■ Speaker Section
Speakers
Full ran e
Ceramic tweeter
Impedance 4 Q
2 x 8 cm
2 x 1.5 cm
■ General
Power supply
AC
Battery
Memory back-up
Power consumption
Battery life (use only alkaline batteries)
Radio broadcast
Radio recordin
CD playback
CD recordin
Tape playback
230 V, 50 Hz
12 V (8 x LR14, C)
6 V (4 x R6/LR6, AA)
14 W
9 hour
9 hour
6 hour
7 hour
8 hour
Dimensions (W x H x D) 408 mm x 148 mm x 271 mm
11

5 Location of Controls and Components
5.1. Main Unit and Remote Control Key Button Operations
12

5.2. Disc Information
•0 - NOTE about usin a DualDisc
The digital audio content ide of a DualDi c doe not meet the technical
pecification of the Compact Di c Digital Audio (CD-DA) format o playback
may not be po ible.
NOTE on MP3
• File are treated a track and folder are treated a album .
• Thi unit can acce up to 999 track , 255 album and 20 e ion .
• Di c mu t conform to IS09660 level 1 or 2 (except for extended format ).
• To play in a certain order, prefix the folder and file name with 3-digit
number in the order you want to play them.
Limitations on MP3 play
• If you have recorded MP3 on the ame di c a CD-DA, only the format
recorded in the fir t e ion can be played.
• Some MP3 may not be played due to the condition of the di c or recording.
• Recording will not nece arily be played in the order you recorded them.
NOTE on CDs Г1СОМРАСТ
Choo e di c with thi mark: [~Q ||~|[Щ Пл
DIGITAL AUDIO
• Thi unit can acce up to 99 track .
• Thi unit can play MP3 file and CD-DA format audio CD-R/RW that have
been finali ed.
• It may not be able to play ome CD-R/RW due to the condition of the
recording.
• Do not u e irregularly haped di c.
• Do not u e di c with label and ticker that are coming off or with adhe ive
exuding from under label and ticker .
• Do not attach extra label or ticker on the di c.
• Do not write anything on the di c.
13

6 Self Dia nostic and Doctor Mode Settin
Thi unit i equiped with feature of elf diagno tic & doctor mode etting for checking the function & reliability.
6.1. Self Dia nostic Mode
6.1.1. Self Dia nostic Table
Item FL display Key operation
Mode name Description
Self Diagno tic Mode To enter into elf diagno tic
checking 1 V V SI/
1 А А A
***: Error code
1. Select CD mode
(En ure no CD in erted).
2. Pre and hold [ ] for
2 econd follow by [ /+] on
main unit.
To exit, pre [TAPE/OFF] on
main uint.
Error code information Sy tem will perform a check on
any unu ual/error code from the
memory
E E
x rr
a
r code will di play
mple:
T С 1 с
1 1 и
1. In elf diagno i mode.
2. Pre [STOP] for on main unit.
To exit, pre [TAPE/OFF] on
main uint.
6.1.2. Self Dia nostic Error Code 1 (For CD)
Error Code Dia nostic Contents Description of error FL display Remarks
H15 CD Open SW
Abnormal During normal operation CD OPEN SW On fail to be detected with 4
ec. Error No. hall be clear by
force or during cold tart.
LJ 1 с
II 1 _l For CD Mechani m Unit
(DLS6F) (For Traver e).
Pre [ ■ ] on main unit
for next error
F15 CD REST SW
Abnormal CD traver e po ition intial etting operation fail afe counter (1000
m ) waiting for REST SW to turn
on. Error No. hall be clear by
force or during cold tart.
С IC
1 1J For CD Mechani m Unit
(DLS6F) (For Traver e).
Pre [ ■ ] on main unit
for next error
F26 Communication
between CD ervo
LSI and micro-p
abnormal.
CD function DTMS command, after
y tem etting, If SENSE = 'L'
cannot be detected. Memory hall
contain F26 code. After Power on,
CD function hall continue, error
di play hall be "NO DISC".
Error No. hall be clear by force or
cold tart.
С “ 1 с
1 i_ u For CD Mechani m Unit
(DLS6F) (For Traver e).
Pre [ ■ ] on main unit
for next error
6.1.3. Self Dia nostic Error Code 2 (For Power Supply)
Error Code Dia nostic Contents Description of error FL display Remarks
U01 Battery Low Detect the Battery when Battery i
Low. 1 in 1
LIU 1 For Power.
Pre [ ■ ] on main unit
for next error
F76 Abnormality in the
output voltage of
tabilized power
upply
In normal operation when DCDET1
i detected "L" (Low) for two
con ecutive time , F76 i
di played on FL for 1 econd and
after that PCONT will be turned to
"L" (Low). Thi i due to any of the
DC voltage (+9V, +7V, -7V, +5V,
+5.3V etc.) not available.
С и с
1 IU For Power.
Pre [ ■ ] on main unit
for next error
14

6.2. Doctor Mode
6.2.1. Doctor Mode Table 1
Mode name Item Description FL display Key operation
Doctor Mode To enter into Doctor Mode for
checking of variou item and
di playing EEPROM and firmware
ver ion.
Note: The micro-proce or
ver ion a hown i an example.
It will be revi e when there i an
update .
FL Di play equence
Di play 1 > 2
(Di play 1)
Ver ion Di play
(DEC) Check um (HEX)
Check um : (Condition 1)
w w
t\ I\ H I
I 4 L
Ver ion Di play
(DEC)
і
Check um
(HEX)
(a) If there i NO EEPROM header
tring OR
(b) If there i no EEPROM ( no data i
received by micro-proce or) [NO] i
di played.
Check um : (Condition 2)
И Г
I 4L
If the ver ion of the EEPROM doe not
match or not working properly [NG] i
di play.
Check um : (Condition 3)
W W
t\ t\
If the EEPROM ver ion matche ,
check um [YYYY] i di played.
(Di play 2)
И С ті I С. г
I ' I _ LI I J l_
The Check um of EEPROM and
firmware ver ion will be di play for 2
ec.
In any mode:
1. Pre and hold [ ] on main
unit follow by [4] and [7] on
remote control.
To exit, pre [TAPE/OFF] on
main uint.
15

6.2.2. Doctor Mode Table 2
Item FL di play Key operation
Mode name De cription
FL Di play Te t To check the FL egment di play
(All egment will light up) [Ш зи зв п л гз ш р го а т ю н о
!Ш Е 1-0 R № № П Л О С К О In Doctor Mode:
1. Pre [AUTO OFF] on remote
control.
To cancel, pre [0] on remote
control.
To exit, pre [TAPE/OFF] on main
uint.
Volume Setting To check for volume etting during
thi mode, Ba & treble i et to
0dB & EQ i witch off. 1 / ГІ “ с п
1' U _ _ ! U
In Doctor Mode:
1. Pre [7] on remote control.
To exit, pre [TAPE/OFF] on main
uint.
1 / ГІ “ “ 1 □
U _ 1 ___ 1
In Doctor Mode:
1. Pre [8] on remote control.
To exit, pre [TAPE/OFF] on main
uint.
1 / ГІ “ П
1' U _ U
In Doctor Mode:
1. Pre [9] on remote control.
To exit, pre [TAPE/OFF] on main
uint.
CD Loading Te t Mode
(DLS6F) To determine the reliability of CD Loading unit.
To check for the Open/Clo e
operation for the CD loading unit.
It fail when there i abnormality
in opening or clo ing.
W
Г І П Г І Г І П П 1
U U U U U U 1
1
The counter will increment by on
A/hen reach 9999999 will change
0000000
e.
to
In Doctor Mode:
1. Pre [ 10], [1], [1] on remote
control.
To exit, pre [TAPE/OFF] on main
uint.
(Refer to ection 6.2.3. for more
information).
CD Traver e Unit Te t
Mode (DLS6F) To check for the traver e unit operation. In thi mode, the fir t &
la t track i acce & read. (TOC).
It fail when TOC i not completed
by IOS or the traver e i out of
focu .
In Doctor Mode:
1. Pre [ 10], [1], [2] on remote
control.
To exit, pre [TAPE/OFF] on main
uint.
(Refer to ection 6.2.4. for more
information).
1 II II II II II 1 1
1 II II II II II 1 1
1
The counter will increment by one.
When reach 9999999 will change to
0000000
CD Combination Te t
Mode (DLS6F) A combination of CD loading & traver e unit te t. In Doctor Mode:
1. Pre [ 10], [1], [3] on remote
control.
To exit, pre [TAPE/OFF] on main
uint.
(Refer to ection 6.2.5. for more
information).
1 II II II II II 1 1
1 II II II II II 1 1
1
The counter will increment by one.
When reach 9999999 will change to
0000000
CD Self-Adju tment
(AJST) Re ult Di play The following hall be di played for 2.5 ec . The re ult hall
corre pond to the condition met
a hown. D
С .. г
l_ _
i play of auto adju tment re ult
In Doctor Mode:
1. Pre [ 10], [1], [4] on remote
control.
To exit, pre [TAPE/OFF] on main
uint.
Cold Start To activate cold tart upon next
AC power up. —
In Doctor Mode:
1. Pre [SLEEP] on remote
control.
To exit, pre [TAPE/OFF] on main
uint.
16

6.2.3. CD Loadin Test Mode
6.2.4.
17

6.2.5. CD Combination Test Mode
18

7 Service Fixture & Tools
Prepare ervice tool before procce ervice po ition.
Service Tool Remark
Deck P.C.B. (JW830) - Main P.C.B. (CN2104) REXN0084 (10P cable)
Panel P.C.B. (ZJ903) - Main P.C.B. (CN4104) REXN0082 (4P cable)
Panel P.C.B. (CN900) - Main P.C.B. (CN2105) REXN0080 (10P cable)
19

8 Disassembly and Assembly Instructions
Caution Note:
• Thi ection de cribe the di a embly and/or a embly procedure fo r all major printed circuit board & main compo
nent for the unit. (You may refer to the ection of “Main component and P.C.B Location ” a de cribed in the ervice
manual)
• Before carrying out the di a embly proce , plea e en ure all the afety precaution & procedure are followed.
• During the di a embly and/or a embly proce , plea e handle with care a there may be cha i component with
harp edge .
• Avoid touching heat ink due to it high temperature after prolong u e. (See caution a de cribed below)
During di a embly and a embly, plea e en ure proper ervice tool , equipment or jig i being u ed.
During replacement of com ponent part , plea e refer to the ection of “ Replacement Part Li t” a de cribed in the
ervice manual.
Select item from the following indexe when di a embly or replacement are required.
Di a embly of Top Cabinet A embly
Di a embly of Mu ic Port P.C.B.
Di a embly of Front Panel A embly
Di a embly of Panel P.C.B., Standby P.C.B. and Volume P.C.B.
Di a embly of Woofer Speaker (SP1)
Di a embly of Woofer Speaker (SP2)
Di a embly of CD Lid
Di a embly of Deck Mechani m Unit
Di a embly of Deck P.C.B.
Di a embly of Ca ette Lid
Di a embly of Mecha Bottom Cover
Di a embly of Power P.C.B.
Di a embly of Main P.C.B.
Replacement of Tran i tor (Q4107)
Replacement of Power IC (IC4101)
Di a embly of CD Mechani m Unit
Di a embly of CD Servo P.C.B.
Di a embly of Battery (1) P.C.B.
Di a embly of Battery (2) P.C.B.
CAUTION NOTE:
Please use ori inal screws and at correct locations.
Below shown is the part no. of different screw types used:
XTV3+8FFJ
XTW3+10FFJ
RHDX03001
XTN2+6GFJ
© : XTV3+10GFJ О
© : XTB26+10GFJ Ф
0:X T V 3 +1 6G F J о
0 : XTW26+1OSFJ о
ф : XTN2+14GFJ
20