Philips MX2500/01 User manual

CLASS 1
LASER PRODUCT
Service
Service
Service
Service
Service
MX2500/01
©Copyright 2004 Philips Consumer Electronics B.V. Eindhoven, The Netherlands
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or
transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise
without the prior permission of Philips.
Published by KC-ET0409 Service Audio Printed in The Netherlands Subject to modification.
GB
3139 785 30940
DVD Receiver
Version 1.0
TABLE OF CONTENTS
Page
Location of PC Boards................................................1-2
Versions Variation & Package ....................................1-2
Specifications..............................................................1-3
Measurement Setup ...................................................1-4
Service Aids ................................................................1-5
ESD & Safety Instruction ............................................1-6
Setting Procedure & Repair Instructions ....................... 2
Disassembly Instructions & Service positions .............. 3
Block & Wiring Diagram ................................................ 4
Key (Control / Standby / Vol) Board .............................. 5
Tuner Board ................................................................... 6
DVD loader .................................................................... 7
Main Board .................................................................... 8
Exploded View ............................................................. 9
Power Board ................................................................ 10
ServiceManual

1-2
/ 01
RDS
Rotary Encoder (volume control) x
Aux Input x
Digital Output x
Line Output x
Progressive scan x
Power supply (220 ~ 240 V) x
LOCATION OF PC BOARDS
VERSION VARIATION:
Type /Versions: MX2500
Features &
Board in used:
VOL.
PCB
CONTROL PCB
LED PCB
TUNER PCB
POWER PCB
MAIN PCB

SPECIFICATIONS
AMPLIFIER SECTION
Output power
- Front ................................................30 W RMS / channel
- Center ........................................................... 30 W RMS
- Subwoofer ..................................................... 50 W RMS
Frequency Response .................. 180 Hz - 14 kHz / ¡Ó3 dB
Signal-to-Noise Ratio.............................. > 60 dB (A-weight)
Input Sensitivity
AUX/TV In ...............................................................400 mV
TUNER SECTION
Tuning Range ......... FM 87.5 – 108 MHz ( 50 kHz steps)
................................... AM 531 – 1602 kHz ( 9 kHz steps)
26 dB Quieting Sensitivity ................................. FM 20 dBf
26 dB Quieting Sensitivity .......................... AM 5000 µV/m
Image Rejection Radio ....................................... FM 25 dB
............................................................................ AM28dB
IF Rejection Ratio ............................................... FM 60 dB
............................................................................ AM24dB
Signal-to-Noise Ratio.......................................... FM 55 dB
............................................................................ AM 40 dB
AM Suppression Ratio ........................................ FM 30 dB
Harmonic Distortion ......................................FM Mono 3 %
.................................................................... FM Stereo 3 %
............................................................................... AM 5 %
Frequency Response ............ FM180 Hz – 10 kHz / ±6 dB
Stereo Separation...................................FM 26 dB (1 kHz)
Stereo Threshold ............................................. FM 23.5 dB
DISC SECTION
Laser Type .................................................. Semiconductor
Disc Diameter .................................................. 12cm / 8cm
Video Decoding ................................... MPEG-2 / MPEG-1
Video DAC ............................................................... 10 Bits
Signal System .................................................. PAL/ NTSC
Video Format ....................................................... 4:3 / 16:9
Video S/N................................................ 56 dB (minimum)
Composite Video Output ............................ 1.0 Vp-p, 75 Ω
S-Video Output ...................................... Y - 1.0 Vp-p, 75 Ω
.......................................................... C - 0.286 Vp-p, 75 Ω
Audio DAC .................................................24 Bits / 96 kHz
Frequency Response .................. 4 Hz - 20 kHz (44.1kHz)
........................................................ 4 Hz - 22 kHz (48kHz)
....................................................... 4 Hz - 44 KHz (96KHz)
Digital Output ......................................................................
................... SPDIF (Sony Philips digital interface) Coaxial
- PCM ................................................................. IEC 60958
- Dolby Digital ................................. IEC 60958, IEC 61937
1-3
MAIN UNIT
Power Supply Rating .............................220- 240 V; 50 Hz
Power Consumption ..................................................120W
SPEAKERS
Front/Rear speakers
System .....................................1-way, Bass Reflex system
Impedance .................................................................... 8 Ω
Frequency response ................................. 120 Hz – 20 kHz
Dimensions (w ×h ×d)........................... 90×92 ×87 (mm)
CENTER SPEAKERS
System ..........................................1-way, Bass Reflex system
Impedance .................................................................... 8 Ω
speaker drivers ......................................................... 1x 3"C
Frequency response .................................. 120 Hz – 20 kHz
Dimensions (w ×h ×d)......................... 90 ×92 ×87 (mm)
PASSIVE SUBWOOFER
Impedance .................................................................... 4 Ω
speaker drivers ............................................. 6 1/2" woofer
Frequency response ................................ 30 Hz – 120 kHz
Dimensions (w ×h ×d)...................... 220 ×212×350(mm)
Weight ......................................................................3.57 kg
Weight ........................................................................ 0.53kg
Dimensions (w ×h ×d)...................... 435 ×53×365 (mm)
Weight ........................................................................ 0.53kg
Weight ....................................................................... 4.07kg
- Rear ..................................................... 30 W RMS / channel

1-4
LF Generator 
e.g. PM5110


Recorder
Use Universal Test Cassette CrO2 SBC419 4822 397 30069
LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter

e.g. Sound Technology ST1700B
L
R
DUT
or Universal Test Cassette Fe SBC420 4822 397 30071

LEVEL METER
e.g. Sennheiser UPM550
with FF-filter
S/N and distortion meter
e.g. Sound Technology ST1700B
L
R
DUT
CD 

Use Audio Signal Disc
(replaces test disc 3)


SBC429 4822 397 30184
Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
DUT
S/N and distortion meter
e.g. Sound Technology ST1700B
Frame aerial
e.g. 7122 707 89001
Tuner AM (MW,LW)
To avoid atmospheric interference all AM-measurements have to be carried out in a Faraday´s cage.
Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz).
RF Generator 
e.g. PM5326
Ri=50Ω

Bandpass
250Hz-15kHz
e.g. 7122 707 48001
LF Voltmeter
e.g. PM2534
DUT
RF Generator 
e.g. PM5326
S/N and distortion meter
e.g. Sound Technology ST1700B
Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz).
Ri=50Ω

Tuner FM
MEASUREMENT SETUP

1-5
Service Tools:
Universal Torx driver holder .................................4822 395 91019
Torx bit T10 150mm ...........................................4822 395 50456
Torx driver set T6-T20 .........................................4822 395 50145
Torx driver T10 extended .....................................4822 395 50423
Compact Disc:
SBC426/426A Test disc 5 + 5A ...........................4822 397 30096
SBC442 Audio Burn-in test disc 1kHz .................4822 397 30155
SBC429 Audio Signals disc .................................4822 397 30184
Dolby Pro-logic Test Disc ....................................4822 395 10216
SERVICE AIDS
HANDLING CHIP COMPONENTS

1-6
NL
WAARSCHUWING
Alle IC’s en vele andere halfgeleiders zijn
gevoelig voor electrostatische ontladingen
(ESD).
Onzorgvuldig behandelen tijdens reparatie kan
de levensduur drastisch doen verminderen.
Zorg ervoor dat u tijdens reparatie via een
polsband met weerstand verbonden bent met
hetzelfde potentiaal als de massa van het
apparaat.
Houd componenten en hulpmiddelen ook op
ditzelfde potentiaal.
I
AVVERTIMENTO
Tutti IC e parecchi semi-conduttori sono
sensibili alle scariche statiche (ESD).
La loro longevità potrebbe essere fortemente
ridatta in caso di non osservazione della più
grande cauzione alla loro manipolazione.
Durante le riparazioni occorre quindi essere
collegato allo stesso potenziale che quello della
massa dell’apparecchio tramite un braccialetto
a resistenza.
Assicurarsi che i componenti e anche gli utensili
con quali si lavora siano anche a questo
potenziale.
GB
Safety regulations require that the set be restored to its original
condition and that parts which are identical with those specified,
be used.
Safety components are marked by the symbol
!

.
NL
Veiligheidsbepalingen vereisen, dat het apparaat bij reparatie in
zijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen,
identiek aan de gespecificeerde, worden toegepast.
De Veiligheidsonderdelen zijn aangeduid met het symbol
!

.
F
Les normes de sécurité exigent que l’appareil soit remis à l’état
d’origine et que soient utiliséés les piéces de rechange identiques
à celles spécifiées.
Less composants de sécurité sont marqués
!

.
D
Bei jeder Reparatur sind die geltenden Sicherheitsvorschriften zu
beachten. Der Original zustand des Geräts darf nicht verändert werden;
für Reparaturen sind Original-Ersatzteile zu verwenden.
Sicherheitsbauteile sind durch das Symbol
!

markiert.
I
Le norme di sicurezza esigono che l’apparecchio venga rimesso
nelle condizioni originali e che siano utilizzati i pezzi di ricambio
identici a quelli specificati.
Componenty di sicurezza sono marcati con
!

.
GB
After servicing and before returning set to customer perform a leakage
current measurement test from all exposed metal parts to earth ground
to assure no shock hazard exist, The leakage current must not
exceed 0.5mA.
CLASS 1
LASER PRODUCT
3122 110 03420
GB
Warning !
Invisible laser radiation when open.
Avoid direct exposure to beam.
S
Varning !
Osynlig laserstrålning när apparaten är öppnad och spärren
är urkopplad. Betrakta ej strålen.
SF
Varoitus !
Avatussa laitteessa ja suojalukituksen ohitettaessa olet alttiina
näkymättömälle laserisäteilylle. Älä katso säteeseen!
GB
WARNING
All ICs and many other semi-conductors are
susceptible to electrostatic discharges (ESD).
Careless handling during repair can reduce life
drastically.
When repairing, make sure that you are
connected with the same potential as the mass
of the set via a wrist wrap with resistance.
Keep components and tools also at this
potential.
F
ATTENTION
Tous les IC et beaucoup d’autres
semi-conducteurs sont sensibles aux
décharges statiques (ESD).
Leur longévité pourrait être considérablement
écourtée par le fait qu’aucune précaution n’est
prise à leur manipulation.
Lors de réparations, s’assurer de bien être relié
au même potentiel que la masse de l’appareil et
enfiler le bracelet serti d’une résistance de
sécurité.
Veiller à ce que les composants ainsi que les
outils que l’on utilise soient également à ce
potentiel.
ESD
D
WARNUNG
Alle ICs und viele andere Halbleiter sind
empfindlich gegenüber elektrostatischen
Entladungen (ESD).
Unsorgfältige Behandlung im Reparaturfall kan
die Lebensdauer drastisch reduzieren.
Veranlassen Sie, dass Sie im Reparaturfall über
ein Pulsarmband mit Widerstand verbunden
sind mit dem gleichen Potential wie die Masse
des Gerätes.
Bauteile und Hilfsmittel auch auf dieses gleiche
Potential halten.
DK Advarse !
Usynlig laserstråling ved åbning når sikkerhedsafbrydere er
ude af funktion. Undgå udsaettelse for stråling.
F
"Pour votre sécurité, ces documents doivent être utilisés par
des spécialistes agréés, seuls habilités à réparer votre
appareil en panne".
GB
ESD PROTECTION EQUIPMENT
Complete Kit ESD3 (small tablemat, wristband,
connection box, estention cable and earth cable ....... 4822 310 10671
Wristband tester ................................................................. 4822 344 13999

1) System Reset
a) Press "SYSTEM" button on R/C. TV show "SETUP"
b) Select the menu using the " " and " " button on R/C
c) Go feature setup page to do system reset
2) Region Code Change
2-1
System, Region code, Tuner, etc. setting procedure
After replacement / repair of the MPEG board, the customer
setting and the region code may lost. Changing the Region
code will put the player back in the state which it has left the
factory.
Region Code
1USA
2EU
3AP
4Australia, NZ, Latam
5RUSSIA, INDIA
6CHINA
TV System
1NTSC
2PAL
3AUTO
Menu/ Audio Subtitle (AS) Language
1English
2English
3English
4English
AFS
001 LX3000D/LX3500D /MRD200
002 MX3600D/MX3800
003 LX3700D/LX3750W
005 MRD210
006 MX3660D
008 FW-D550
010 MRD120/MX6050
oem derivative
08
.
region code = 1 digit
.
tv system = 1 digit
.
"as/menu lang" = 1 digit
.
"AFS" = "architechture Feature Set" = 3 digits
This field is used to define the architecture / features sets for
each product.
.
"oem derivative" = 2 digit
This field is use to define the OEM set. This will affect the
background display.
3) Region code change timer reset
Press below key to reset the timer :
a) In DISC source, stop mode and no disc in tray.
b) Press R/C "Play -159-PLAY" to reset timer to 25
4) Tuner area change
a) Press the "OPEN/CLOSE" button to open the set's door
b) Press "1" "5" "9" button by using R/C.
c) TV Show "TUNER AREA"
d) Select the tuner area you want by using the " " and
"" button on R/C, then press "OK" to confirm. TV show
" TUNER AREA CHANGED"
If you didn't press it in five seconds, the system will remain
original status.
2-1
Hence in total, reprograming will be done by way of the
remote control. It should run as below :-
a) Put the player in stop mode. No disc loaded.
b) Press the following key on remote control:
For MX2500/01 (Europe) :
<789> <OK> <02> <PLAY>
∗∗
∗∗
∗After the Region Code is changed it is necessary to reset
the system so that the new Region Code will be fully
effective. All customer setting will be lost.
∗∗
∗∗
∗On top of the maximum number of times allowed for
changing the region code is changed to 25.
∗∗
∗∗
∗When the counter reach 25, you will not be able to further
change the code until you reset the timer by the Region
Code timer reset procedure
CAUTION !
Thisinformationisconfidencialandmaynot
be distributed. Only a qualified service
person should reprogram the Region Code.
5. Video Out Change
a) Press "SYSTEM" on R/C button
b) Select the menu using the " " and " " button on R/C
c) Go picture setup page select Video out item.
Note :-
Please refer to the above different tuner area.

2-2
REPAIR INSTRUCTIONS (1 of 2)
2-2

2-3
REPAIR INSTRUCTIONS (2 of 2)
2-3

3-1
DISASSEMBLY INSTRUCTIONS
1) Open the DVD Tray by using the Open/Close Button
while the Set is ON and disconnect the mains supply after
removing the Tray Cover.
Note: Ifthisisnotpossible,theDVDTrayhastobeopen
manually.
Take a mini screw driver about 2mm diameter and make
a marking 24mm from the tip as shown in figure 2. place
the set on its side, insert the mini screw driver till the
marking and slide it towards the right as shown in figure
1 until the Tray moves out of the Front Panel.
Dismantling of the Front Panel Assembly
2) Return the set to its upright position and remove the Tray
Cover as shown in Figure 3 and close the tray manually
by pushing it back in.
3) Loosen 9 screws and remove the Top Cover by lifting the
rear portion upwards before sliding it out towards the rear.
-5screws on the back
-2screws each on the left & right side
4) Loosen 7 screws & lift up the top edge of Front Panel
assembly to free some catches before sliding it out
towards the front.
-4screws on the bottom
-1screw "E" on the inside as indicated in Figure 8.
-1screw each on the left & right side
3-1
Figure 5
Dismantling of the Power Board
Figure 4
Figure 3
Figure 2
Figure 1
1) Loosen 4 screws "A" to remove the DVD Module as shown in figure 4.
Dismantling of the DVD Module
24mm
2mm

Repeat Marking just outside the

slot on the rear cabinet
A
B
1) Loosen 4 screws "B" at the top of the Power Board as
shown in figure 5

3-2
SERVICE POSITIONS
Service position A
Service position B
Note: In some service positions the components or copper patterns of one board may risk touching its neighbouring pc
boards or metallic parts. To prevent such short-circuit use a piece of hard paper or other insulating material between them.
3-2
Dismantling of the Tuner PCB
1) Loosen 10 screw " C " at the back panel as shown in figure
7.
2) Loosen 6 screw " D " on the top of main board as shown in
figure 8.
Figure 7
Figure 8
C
D

4-1
BLOCK DIAGRAM
4-1

4-2
WIRING DIAGRAM
4-2

KEY (CONTROL / STANDBY /
VOL) BOARD
TABLE OF CONTENTS
FTD Display Pin Assignment........................................... 5-1
Pin Connection ................................................................ 5-1
Circuit Diagram ................................................................ 5-2
PCB Layout Top View ......................................................5-3
PCB Layout Bottom View ................................................5-3
Electrical Parts List & Voltages ....................................... 5-4
5-1
FTD DISPLAY PIN ASSIGNMENT
PIN CONNECTION
## Note ##
1. Fn: Filament pin
2. NP : No Pin
3. NX : No ExtendedPin
4. nG : Grid Pin
5. PN : Anode Pin
5-1
PIN NO.
CONNECTION
12345678910111213141516171819202122 31~2332333435
F1 F2 NP P1P2P3P4P5P6P7P8P9
P10P11P13 P12P14P15P16P17P18
NX9G8G7G6G5G4G3G2G1GF2 F1NPNP
36373839404142434445
NP 10G
a
b
c
d
e
f
g
hk
p
r
sm
n
j
(2G - 10G)
Dp
1G 2G3G4G5G6G7G8G9G10G 1G
P2
P1
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
P17
P18
10G 9G 8G 7G 6G 5G 4G 3G 2G 1G
a
b
c
d
e
f
g
h
j
k
m
p
n
r
s
a
b
c
d
e
f
g
h
j
k
m
p
n
r
s
a
b
c
d
e
f
g
h
j
k
m
p
n
r
s
a
b
c
d
e
f
g
h
j
k
m
p
n
r
s
a
b
c
d
e
f
g
h
j
k
m
p
n
r
s
a
b
c
d
e
f
g
h
j
k
m
p
n
r
s
a
b
c
d
e
f
g
h
j
k
m
p
n
r
s
a
b
c
d
e
f
g
h
j
k
m
p
n
r
s
a
b
c
d
e
f
g
h
j
k
m
p
n
r
s
Col Dp Col

5-2 5-2
CIRCUIT DIAGRAM - KEY BOARD

123456
123456
A
B
C
D
E
A
B
C
D
E
C2201 E1
C2202 E1
C2204 E1
C2206 D2
C2207 D2
C2208 C4
C2209 C4
C2212 C6
C2213 C6
C2214 A6
C2215 A6
C2216 A1
C2217 A1
C2218 B1
C2219 B2
C2220 B2
C2221 A3
C2222 A5
C2223 A3
C2224 B2
C22051 D1
D2201 C2
D2202 C3
DP2201 A4
IC2201 E2
IC2202 A2
LD2201 E6
Q2201 D2
Q2202 D3
Q2203 C4
Q2204 D5
Q2205 E5
R2201 E3
R2202 E3
R2203 E3
R2204 E3
R2205 E3
R2207 E3
R2208 E3
R2209 B5
R2210 E2
R2211 E2
R2212 E2
R2213 E2
R2214 E1
R2215 D1
R2217 D2
R2218 D4
R2219 C4
R2221 D5
R2222 C5
R2223 D6
R2224 D5
R2226 B5
R2227 B6
R2228 D5
R2231 D2
R2232 D2
R2233 D3
R2234 D3
R2235 D4
R2236 C3
R2237 D1
R2238 D1
R2239 D1
R2240 A2
R2241 A2
R2242 D1
R2243 D1
R2244 D1
R2245 A1
R2246 B1
R2247 B1
R2248 B1
R2249 B2
R2250 B2
R2251 B2

R2252 B2

R2253 E4

R2254 E5

R2255 E6

RB201 B6

RB202 C6
RB202A E5

RB202B E5

RB203A A6

RB203B A6

SN2201 C6
TA2201 D2
TA2202 C2
TA2203 C2
TA2204 C2
TA2205 C2
TA2206 D3
TA2207 D3
TA2208 E6

VR2201 A6

XL2201 E1

ZD2201 D2
ZD2202 D6
ZD2203 D6

RB202
C2224
104

PCB LAYOUT - KEY BOARD (BOTTOM)
5-3 5-3
PCB LAYOUT - KEY BOARD (TOP)
A
B
A
B
12345
12345
TA2207 B5
TA2208 B1
VR2201 B5
XL2201 A2
ZD2201 B2
C2204 A2
C2207 B1
C2208 B4
C2213 A3
C2217 B3
C2223 A3
D2201 A4
D2202 A4
DP2201 B3
LD2201 B1
R2228 B2
RB201 B3
RB202 B2
RB202A A1
RB202B A1
RB203A A5
RB203B A5
SN2201 A4
TA2201 B4
TA2202 A5
TA2203 B4
TA2204 B4
TA2205 A4
TA2206 B1
A
B
A
B
12345
12345
ZD2202 A2
ZD2203 A2
C2201 A4
C2202 A4
C2206 B4
C2209 A2
C2212 A2
C2214 A1
C2215 A1
C2216 B3
C2218 B3
C2219 A3
C2220 B3
C2221 A4
C2222 A3
C2224 A3
C22051 B4
IC2201 B4
IC2202 B3
Q2201 A2
Q2202 A1
Q2203 B1
Q2204 B2
Q2205 A5
R2201 B4
R2202 B5
R2203 B5
R2204 B5
R2205 B5
R2207 A5
R2208 A4
R2209 B4
R2210 B4
R2211 A4
R2212 A4
R2213 A4
R2214 A4
R2215 A4
R2216 A4
R2217 A4
R2218 A4
R2219 A2
R2221 B2
R2222 A2
R2223 A2
R2224 B2
R2226 A1
R2227 A1
R2231 B2
R2232 A2
R2233 B1
R2234 A1
R2235 B1
R2236 B1
R2237 A4
R2238 B4
R2239 B4
R2240 B4
R2241 B3
R2242 B4
R2243 A4
R2244 A4
R2245 A3
R2246 A3
R2247 B3
R2248 B3
R2249 B2
R2250 B1
R2251 A1
R2252 B1
R2253 A5
R2254 A5
R2255 A5
R2256 B2

MISCELLANEOUS
ELECTRICAL PARTS LIST - KEY ( CONTROL / STANDBY / VOL) PCB
5-4 5-4
SN2201 9965 000 26956 IRT RECEIVER IRM-2638F4
TA2201 9965 000 26950 AI TACT SW SKHVBE3520
TA2202 9965 000 26950 AI TACT SW SKHVBE3520
TA2203 9965 000 26950 AI TACT SW SKHVBE3520
TA2204 9965 000 26950 AI TACT SW SKHVBE3520
TA2205 9965 000 26950 AI TACT SW SKHVBE3520
TA2206 9965 000 26950 AI TACT SW SKHVBE3520
TA2207 9965 000 26950 AI TACT SW SKHVBE3520
TA2208 9965 000 26950 AI TACT SW SKHVBE3520
VR2201 9965 000 29233 ENCODER L20 A=12
L2201 9965 000 23590 CRYSTAL 4MHZ HC-49US
DIODES
D2201 9965 000 26949 DIODE SW 1N4148
D2202 9965 000 26949 DIODE SW 1N4148
DP2201 9965 000 26957 VFD 100 25MM PIN
TRANSISTORS & INTERGRATED CIRCUITS
ZD2201 9965 000 26942 DIODE ZENR 5.0-5.2V 0.5W
ZD2202 9965 000 26930 CHIP ZENER 5.6V 0.05 0.5W
ZD2203 9965 000 26930 CHIP ZENER 5.6V 0.05 0.5W
IC2201 9965 000 23592 IC 18PIN HT48R05A-1
IC2202 9940 000 00907 IC 52 PIN TP6311QH
LD2201 9965 000 26953 LED 3 DIA RED ROUND
Q2201 9940 000 00921 ISTR PNP 2SA812 HFE:200-400
Q2202 9940 000 00921 ISTR PNP 2SA812 HFE:200-400
Q2203 9940 000 00921 ISTR PNP 2SA812 HFE:200-400
Q2204 9940 000 00915 ISTR NPN 2SC1623
Q2205 9940 000 00921 ISTR PNP 2SA812 HFE:200-400
R2237 9965 000 29234 CHIP RES. 2.2K OHM 1/10W 5%
R2238 9965 000 29234 CHIP RES. 2.2K OHM 1/10W 5%
R2239 9965 000 29234 CHIP RES. 2.2K OHM 1/10W 5%
R2240 9965 000 29235 CHIP RES. 4.7K OHM 1/10W 5%
R2241 9965 000 29236 CHIP RES. 56K OHM 1/10W 5%
R2242 9965 000 29237 CHIP RES. 10KOHM 1/10 W 5%
Note : Only the parts mentioned in this list are normal
service spare parts.
R2243 9965 000 29237 CHIP RES. 10KOHM 1/10 W 5%
R2244 9965 000 29237 CHIP RES. 10KOHM 1/10 W 5%
R2245 9965 000 29237 CHIP RES. 10KOHM 1/10 W 5%
R2246 9965 000 29238 CHIP RES. 100 OHM 1/10W 5%
R2247 9965 000 29238 CHIP RES. 100 OHM 1/10W 5%
R2248 9965 000 29238 CHIP RES. 100 OHM 1/10W 5%
R2249 9965 000 29237 CHIP RES. 10KOHM 1/10 W 5%
R2250 9965 000 29237 CHIP RES. 10KOHM 1/10 W 5%
R2251 9965 000 29237 CHIP RES. 10KOHM 1/10 W 5%
R2252 9965 000 29237 CHIP RES. 10KOHM 1/10 W 5%
R2253 9965 000 29235 CHIP RES. 4.7K OHM 1/10W 5%
R2254 9965 000 29237 CHIP RES. 10KOHM 1/10 W 5%
R2255 9965 000 29239 CHIP RES. 1.2K OHM 1/16W 5%
R2256 9965 000 26976 CHIP RES. 0 OHM JUMP WIRE
VOLTAGES
00003.83.8 0 3.8 3.7 0 0 0 0 019.7
-22.2
-22
-11.2 -19.9 -17.8
-21 -15.6 -13.4 -20 -13.4 -20 -22.4 -18 -20.3 -13.6 -15.8 -11.4 -4.6 -22.6 -20.4
0 0 4.6
5.1 0
-20.4 -20.4 -20.4 -20.4 -20.4
-20.4-20.4 -20.4-20.5 4.64.6
4.64.6
4.6
5.1
5.1 5.1
0
5.1
00
4.9 4.9 5.2 00 0000
PIN 123456789
10 11 12 13 14 15 16 17 18 19 20
VOLTAGE
PIN 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
VOLTAGE
PIN 41 42 43 44 45 46 47 48 49 50 51 52
VOLTAGE
PIN 123456789
10 11 12 13 14 15 16
VOLTAGE
17 18
IC2202 (PT16511)
IC2201 (HT480051)
PIN 123
VOLTAGE
Q2201 (2SA733)
550
55
0
PIN 123
VOLTAGE
Q2204 (2SC1623)
550 550
PIN 123
VOLTAGE
Q2202 (2SA733)
PIN 123
VOLTAGE
Q2203 (2SA733)
4.6 4.2 4.2
PIN 123
VOLTAGE
Q2205 (2SA733)

TUNER BOARD
TABLE OF CONTENTS
Tuner adjustment table................................................................... 6-1
Circuit Diagram ............................................................................... 6-2
PCB Layout View (Top) .................................................................. 6-3
PCB Layout View (Bottom) ............................................................ 6-4
Electrical Parts List & Voltage List ................................................. 6-5
6-1
TUNER ADJUSTMENT TABLE
Waverange Input frequency Input Tuned to Adjust Output Scope/Voltmeter
VARICAP ALIGNMENT
AM IF
AM RF
3)
108MHz
87.5MHz check
6.5V±1.2V
1.0V ±0.5V

T002
FM
87.5 - 108MHz
(50kHz grid)
1602KHz
531KHz T005 1.1V
±
0.5V







FM

612kHz576kHz
1404kHz
T006
1404kHz VC001
AM
FM - IF
No need 
to adjust
FM 10.7MHz, 50mV
continuous wave


1)
If sensitivity of frequency counter is too low adjust to max. channel separation
(input signal: stereo left 90% + 9%, adjust output on right channel to minimum)
2)
RC network serves for damping the IF-filter while

adjusting the other one.
3)
For AM RF adjustments the original frame antenna has to be used!
max.
symmetric
f
o
max.
symmetric
f
o
∆f = ±30kHz
V
RF
as low as
possible
200P
short circuit
to block AFC
23
IC001
R220
100nF
24
IC001
450kHz
Connect pin 29 of
IC001 (AM Osc.)
with short wire to 
ground (pin 6)
AM AFC
MW


∆f = ±15kHz
V
RF
= 3mV
Use Service Testprogram. By selecting the TUNER TEST test frequencies will be stored as preset frequencies automatically.
1700KHz
530KHz
AM
530-1710kHz
(10kHz grid)
FM - RF
7.8V ±0.2V


108MHz
87.5MHz

MAX 
mod=1kHz

∆f=±22.5kHz
106MHz
90.1MHz

610kHz
1400kHz
T006
VC002
MW
610kHz
1400kHz
( 21L / 21L / 37S )
8.0V 1HV
±
±
1.1V 0.2V

Max
fo
Symmetric
check
check
check
T005
VC001
L001 MAX
MAX
T001
MAX
T003
V=mV
∆
6-1

CIRCUIT DIAGRAM - TUNER BOARD
6-2 6-2
A
B
C
A
B
C
12 34
12 34
-
ANT001- A1-
C002- A1-
C005- A1-
C007- A2-
C006- B2-
C008- B2-
C009- B2-
C01- C4-
C02- C3-
C03- A2-
C010- B1-
C011- C1-
C012- B2-
C013- C2-
C014- C1-
C015- C1-
C016- C1-
C019- A2-
C020- B3-
C021- C2-
C022- C2-
C023- C2-
C024- C2-
C025- C2-
C026- C2-
C029- C3-
C030- C3-
C031- C2-
C032- A3-
C033- B3-
C034- C3-
C035- B2-
C036- B4-
C037- B3-
C038- B4-
C039- C4-
C040- B3-
C041- B3-
C042- B4-
C043- B4-
C044- B3-
C047- A1-
C048- B1-
C0501- A2-
CN001- C4-
CN002- B1-
D001- A1-
D002- A1-
D003- A4-
D004- C3-
D005- B1-
IC001- B3-
IF001- A3-
IF002- A3-
IF003- C3-
L02- B1-
L001- A2-
Q001- B3-
Q002- B4-
Q003- A2-
R001- A1-
R002- B1
R004- A2
-
R005- B2
-
R006- A1
-
R010- C1
R011- C1
R015- B2
-
R016- B4
-
R017- C2
R018- B3
-
R019- C3
R020- B4
-
R021- C4
R023- B4
-
R024- B2
-
R025- C3
R026- C3
R027- B3
-
R028- B4
-
R029- B4
-
R030- B4
-
R032- B3
-
R033- A2
-
T001- A2
-
T002- A4
-
T003- A4
-
T005- C1
T006- B1
-
VC001- A2
-
VC002- B1
-
VD001- B1
-
VD002- A1
-
VD003- B1
-
VD004- C1
VR001- B2
-
XL1- B3