Philips MX3660D/21H/30/37 User manual

CLASS 1
LASER PRODUCT
Service
Service
Service
Service
Service
MX3660D/21H/30/37
©Copyright 2003 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 BB-ET0326 Service Audio Printed in The Netherlands Subject to modification
GB
3139 785 30410
DVD Receiver
Version 2.0
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 / LED Board ............................................................ 5
Power Board .................................................................. 6
DVD Module .................................................................. 7
Main Board (Include Headphone Board) ...................... 8
RGB Board .................................................................... 9
Mechanical Exploded View & Parts List ...................... 10
ServiceManual
COMPACT
DIGITAL AUDIO
For repair information on the Subwoofer,please refer to Service Manual
SW3660/17 (12NC: 3139 785 30380) & SW3660/00 (12NC: 3139 785 30420).

LOCATION OF PC BOARDS
VERSION VARIATION:
Type/Versions MX3660D MX3660D MX3660D
Features &
Board in used
RDS function
Progressive scan
Scart board
RGB board xx
Subwoofer SW3660/00 x x
x
Subwoofer SW3660/17 x
x
Power PCB(120V)
xx
Power PCB(220V~240V)
/21H /30 /37
1-2

SPECIFICATIONS
AMPLIFIER SECTION
Power Output
- Stereo mode (DIN)................................................2 x 50 W
...........................................................................2x 40W FTC
- Surround mode (1 kHz)........................50 W RMS/channel
Total Harmonic Distortion...........10 % at rated power (1 kHz)
Frequency Response .........................180 Hz-14 kHz/±1 dB
Signal-to-NoiseRatio........................................> 65dB(CCIR)
InputSensitivity...........................................................400mV
DVD SECTION
LaserType......................................................Semiconductor
DiscDiameter.........................................................12cm/8cm
Video Decoding......................................................MPEG-2
AudioDAC....................................................................10Bits
SignalSystem.......................................................PAL/NTSC
VideoFormat.............................................................4:3/16.9
Video S / N.................................................56 dB (minimum)
Composite Video Oput.....................................1.0V p-p, 75Ω
S-VideoOutput...............................................Y-1.0Vp-p, 75Ω
...................................................................C-0.286Vp-p,75Ω
Audio DAC..................................Direct Digital Amplification
FrequencyResponse...........................4 Hz-20 kHz (44.1kHz)
............................................................. 4 Hz-22 kHz (48 kHz)
............................................................. 4 Hz-44 kHz (96 kHz)
Digital Output.................................SPDIF Coaxial & Optical
TUNER SECTION
Tuning Range......... FM 87.5 -108 MHz (100 kHz steps) (/37)
Tuning Range....FM 87.5 -108 MHz (50 kHz steps) (/21H,/30)
..................................AM 530 - 1710 kHz (10 kHz steps) (/37)
..........................MW 531 - 1602 kHz (9 kHz steps) (/21H,/30)
26 dB Quieting Sensitivity......................................FM 20 dB
26 dB Quieting Sensitivity..............................AM 5000 uV/m
Image Rejection Ratio...........................................FM 25 dB
......................................................................AM 28 dB (/37)
............................................................MW 28 dB (/21H,/30)
IF Rejection Ratio..................................................FM 60 dB
....................................................................AM 24 dB (/37)
..............................................................MW24 dB (/21H,30)
Signal-to-Noise Ratio..............................................FM 55 dB
....................................................................AM 35 dB (/37)
...........................................................MW 35 dB (/21H,/30)
AM Suppression Ratio...........................................FM 30 dB
HarmonicDistortion...........................................FM Mono 3%
..........................................................................FMStereo3%
.........................................................................AM 5% (/37)
...............................................................MW 5% (/21H,/30)
Frequency Response.....................FM 180 Hz-10kHz/±6 dB
StereoSeparation.........................................FM 26 dB(1 kHz)
Stereo threshold..................................................FM 23.5 dB
MISCELLANEOUS
Power Supply Rating..................................120V/60 Hz (/37)
Power Supply Rating.............220-240 / 50-60 Hz (/21H,/30)
Power Consumption.................................................. 160W
Dimensions (w x h x d)............... 435 mm x 81 mm x 360mm
...............................................................17.1x3.1x14.2 (inch)
Weight...........................................................................5.1kg
............................................................................11,2 pounds
1-3
IR REMOTE CONTROL
EffectiveRange.........................................................> 8 Meter
Numberof Keys................................................................45
Battery (1.5V)............................................................AA x 2
SPEAKERS
Front Speakers / Surround speaker
System............................................................2-wayshielded
Impedance...............................................................................................8Ω
Speaker drivers..................................3" full range, 1" piezo
Dimensions (w x h x d)................... 96 mm x 155 mm x 95 mm
.............................................................3.78x6.10x3.74(inch)
Weight..............................................................0.45Kg/each
...................................................................0.99pounds/each
Center Speaker
System...............................................5multidirectionaldriver
Impedance...................................................................................8Ω
Speakerdrivers.............................4x2"woofer,13/4 " tweeter
Dimensions (w x h x d)................435 mm x 72 mm x 63.5 mm
................................................17.13x 2.83x 2.5 (inch) (/37)
Weight.........................................................................1.32kg
...............................................................2.90 pounds (/37)

1-4
FM SECTION
DISC SECTION
AC MILLIVOL TME TER AUTO DISTORTION METER
OSCIL LOSCOPE
LOAD 4 OHM
AM-FM STEREO SIGNAL
GENERATOR
SIGNAL GENERATORAC
LOOP
AM LOOP ANT
DUT
INPUT OUTPUT
INPUT
OUTPUT
RL
AM SECTION
............
............
AC MILLIVOL TME TER AUTO DISTORTION METER
OSCIL LOSCOPE
LOAD 4 OHM
AM-FM STEREO SIGNAL
GENERATOR
SIGNAL GENERATORAC
DUT
INPUT OUTPUT
INPUT
OUTPUT
RL
............
............
AC MILLIVOL TME TER AUTO DISTORTION METER
OSCIL LOSCOPE
LOAD 4 OHM
DOLBY TEST METER
SIGNAL GENERATORAC
DUT
INPUT OUTPUT
INPUT
OUTPUT
............
............
AUX SECTION
.......
............
.......
............
.......
............
.......
............
AC MILLIVOL TME TER AUTO DISTORTION METER
OSCIL LOSCOPE
LOAD 4 OHM
DUT
INPUT
............
............
.......
............
.......
............
.......
............
.......
............
DVD TEST DISC
R L C SRSLSWR L C SRSLSW

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
ESD Equipment:
Anti-static table mat - large 1200x650x1.25mm ...4822 466 10953
anti-static table mat - small 600x650x1.25mm .....4822 466 10958
Anti-static wristband ............................................4822 395 10223
Connectorbox (1MΩ) ..........................................4822 395 11307
Extension cable
(to connect wristband to conn.box) ..........4822 320 11305
Connecting cable
(to connect table mat to conn.box) ...........4822 320 11306
Earth cable (to Connect product to mat or box) --4822 320 11308
Complete kit ESD3
(combining all above products) ...............4822 320 10671
Wristband tester ...................................................4822 344 13999
SERVICE AIDS
HANDLING CHIP COMPONENTS

1-6
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.
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.
“Pour votre sécurité, ces documents
doivent être utilisés par des spécia-
listesagréés,seuls habilitésà réparer
votre appareil en panne”.
GB
Safety regulations require that the set be restored to its original
condition and that parts which are identical with those specified,
be used.
NL
Veiligheidsbepalingen vereisen, dat het apparaat bij reparatie in
zijn oorspronkelijke toestand wordt teruggebracht en dat onderdelen,
identiek aan de gespecificeerde, worden toegepast.
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.
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.
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.
"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!
DK Advarse !
Usynlig laserstråling ved åbning når sikkerhedsafbrydere er
ude af funktion. Undgå udsaettelse for stråling.

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
002 MX3600D/MX3700D/MX3800/MX3550D
003 LX3700D/LX3750W
005 MRD210
006 MX3660D
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.
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 MX3660D/37 (USA)
<PLAY> <159> <111> <006> <08> PLAY
For MX3660D/21H (APAC)
<PLAY> <159> <331> <006> <08> PLAY
For MX3660D/30 (AUSTRALIA)
<PLAY> <159> <431> <006> <08> 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
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 openthe set's door
b) Press "1" "5" "9" button by using R/C.
c) TV Show "TUNER AREA ADJUST"
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.
USA FM 87.5M 108M 100K
AM 530K 1700K 10K
APAC FM 87.5M 108M 50K
AM 531K 1602K 9K
EUROPE FM 87.5M 108M 50K
AM 531K 1602K 9K
LATAM FM 87.5M 108M 50K
AM 530K 1710K 10K
AUSTRALIA FM 87.5M 108M 50K
/ NZ AM 531K 1602K 9K
Note :-
(a) Please refer to the above different tuner area.
AREA BAND FREQUENCY (Hz) STEP(Hz)
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.
6. Password Change
a) Press "SYSTEM" on R/C button
b) Select the menu using the " " and " " button on R/C
c) Go feature setup page select "PASSWORD". TV show
"ENTER CODE". Press 4 times of "STOP" button on R/C.
d) Select "PARENTAL" "8 ADULT" on TV.
e) Enter PASSWORD to "1234"
∗∗
∗∗
∗"1234" is a default password supplied.
7. Checking on the Software version
a) Open the CD door.
b) Press "123" and "OK" on the remote control.
c) TV will show the version on screen.
8. Upgrading new software
a) Open the CD-door, then insert the CD-R program disc.
b) Close the CD-door.
c) TV will show:-
."disc loading"
."bank30.rom"
."writing" about 6 seconds.
."Done"
∗∗
∗∗
∗ The latest upgraded is in version VER0622.
2-1
CAUTION !
This information is confidencial and may
not be distributed. Only a qualified service
personshouldreprogramtheRegionCode.

2-2 2-2
REPAIR INSTRUCTION

2-3 2-3
REPAIR INSTRUCTION

2-4 2-4
REPAIR INSTRUCTION

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: If this is not possible, the DVD Tray has to be open
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
1) Loosen 2 screws "B" on the bottom cover as shown in
figure 5.
3) Loosen 4 screws "C" at the top of the Power Board as
shown in figure 6
Figure 6
Figure 4
Figure 3
B
C
24mm
2mm
Repeat Marking just outside the
slot on the rear cabinet
Figure 2
Figure 1
1) Loosen 4 screws "A" to remove the DVD Module as shown in figure 4.
Dismantling of the DVD Module
A

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 8 screw " D " at the back panel as shown in figure
7.
2) Loosen 6 screw " F " on the top of main board as shown in
figure 8.
Figure 7
Figure 8
Figure 9
D
F
E
R.G.B Jack use for MX3660D/21H
MX3660D/30
MX3660D/37

4-1 4-1
BLOCK DIAGRAM

4-2
WIRING DIAGRAM
4-2

KEY / LED 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 .......................................................... 5-4
5-1
FTD DISPLAY PIN ASSIGNMENT
PIN CONNECTION
## Note ##
1. Fn: Filament pin
2. nG : Grid pin
3. Pn : Anode pin
4. NP : No Pin
5. NC : No Connection pin
5-1
a
b
hjk
f
gm
erpnc
d
(4G-11G)
3G 2G 1G
4G 5G 6G 7G 8G 9G 10G 11G
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
P16
1G 2G 3G 4G 5G 6G 7G 8G 9G 10G 11G
Program
Sleep
DIGITAL
ProLogic
Stereo
L
C
R
SL
Sub
SR
a
b
h
j
k
f
g
m
e
r
p
n
c
d
a
b
h
j
k
f
g
m
e
r
p
n
c
d
a
b
h
j
k
f
g
m
e
r
p
n
c
d
a
b
h
j
k
f
g
m
e
r
p
n
c
d
a
b
h
j
k
f
g
m
e
r
p
n
c
d
a
b
h
j
k
f
g
m
e
r
p
n
c
d
a
b
h
j
k
f
g
m
e
r
p
n
c
d
a
b
h
j
k
f
g
m
e
r
p
n
c
d
Col Dp MHz
KHz
L
C
R
SL
Sub
SR
PIN NO.
CONNECTION
1
F
1
2
F
2
3
N
P
4
1
G
5
2
G
6
3
G
7
4
G
8
5
G
9
6
G
1
0
7
G
1
1
8
G
1
2
9
G
1
3
10
G
1
4
11
G
1
5
N
C
1
6
N
C
1
7
P
1
1
8
P
2
1
9
P
3
2
0
P
4
2
1
P
5
2
2
P
6
2
3
P
7
2
4
P
8
2
5
P
9
2
6
P
10
2
7
P
11
2
8
P
12
2
9
P
13
3
0
P
14
3
1
P
15
3
2
P
16
3
3
N
P
3
4
F
2
3
5
F
2

CIRCUIT DIAGRAM
5-2 5-2
12 34
12 34
A
B
C
D
A
B
C
D
C201 A1
C202 A1
C203 A1
C204 C3
C205 C3
C207 B1
C208 B1
C209 B1
C212 D3
C213 D3
C214 A4
C215 A4
C216 C3
C295 D3
C991 D2
C992 D1
C993 D1
C994 D1
D201 C2
D202 C2
D203 C3
D204 B4
D985 D2
DP251 A2
IC251 B2
IC981 D2
LD201 C4
Q202 C2
Q203 C2
Q204 C3
R201 A1
R202 A1
R203 A1
R204 B1
R205 B1
R206 B1
R213 A1
R214 A2
R216 C3
R223 A4
R224 A4
R227 C3
R228 B1
R229 B1
R230 B1
R231 C1
R232 B4
R234 C2
R236 C2
R238 D1
R239 D1
R240 D1
R241 A1
R242 D3
R244 B3

R225 D3
R245 C3
R246 C3
R250 C2
R251 C2
R984 D1
R987 D1
R988 C2
R989 D2
R991 D2
R992 D2
R993 D2
R994 D2
R995 D2
RB201 B4

RB202 D3
RB203AC3
RB203BC4
RB204AC3
RB204BC4
SN201 C3
TA201 C4
TA202 C4
TA203 C1
TA204 C2
TA205 B2

TA206 C2
TA207 C2
TA208 C2
TA209 C2
TA210 C2
TA211 B4

TA212 A4

XL981 D1
ZD201 D3
ZD202 C3
ZD203 C3
0V
0V
0V
0V
4.9V
4.9V
0V
5V
5V
0V
0V
0V -22.1V
-20.1V
-9.1V
-12.9V
-20.4V
-20.4V
5V
-20.4V
-20.4V
-20.4V
-20.4V
-20.4V
-20.4V
-20.1V
-20.4V
5.1V
-21.6V
-20V
-14.6V -10.9V -21.9V -21.9V -21.9V -16.4V -20.1V
-20.4V -20.4V -20.4V 5.1V 5.1V 5.1V 5.1V 0V 0V 0V 2.8V -20.4V
-14.6V
0V
0V 5V
5V
0V
0V4.4V
0V
5V
5V

5-3 5-3
PCB LAYOUT TOP VIEW
PCB LAYOUT BOTTOM VIEW
1
A
B
A
B
23 45
12 3 45
1
A
B
A
B
23 45
12 3 45
RB205A B4
RB205B B4
RB206A A4
RB206B A4
SN201 A1
TA201 A1
TA202 B1
TA203 A3
TA204 A3
C1 A2
C2 B1
JW222B4
JW223A4
JW224A5
JW225B5
JW226A5
JW227A5
JW228A3
JW229A5
JW230B5
TA205 A4
TA206 B3
TA207 B3
TA208 B4
TA209 A5
TA210 B5
TA211 A4
TA212 A5
XL981A3
ZD201A5
ZD202A1
ZD203A1
R993 A2
R994 A2
R995 A3
RB201 B3
RB202 B5
RB204BA1
RB203BA1
RB203AA1
RB204AA1
JW231A4
JW232A1
JW233B1
JW234B3
JW235A1
JW244A1
Q204 B3
R201 B1
R202 B1
R203 B1
R204 B3
R205 B3
R206 B3
R213 B1
R214 B2
R216 A1
R223 B3
R224 B3
R227 A1
R228 A2
R229 A2
R230 A2
R231 A2
R232 A4
R236 A3
R238 A1
R239 A1
R240 A1
R241 A2
R242 B4
R245 B2
R246 B3
R988 A2
R989 A2
R991 A3
R992 A2

C201 B1
C202 A1
C203 B1
C204 A1
C205 A1
C207 A2
C208 A2
C209 A2
C212 A5
C213 A5
C214 B3
C215 B4
C224 B3
C295 A5
C991 A2
C994 A3
D201 B2
D202 B2
JW204B1
JW205A2
JW206A2
JW207B2
JW208A2
JW209A2
JW210A2
JW211A3
JW212A3
JW213A3
JW214A3
JW215B3
JW216B3
JW217B3
JW218B3
JW219B3
JW220B3
JW221B3
C216 A5
C992 A3
C993 A3
IC251 B4

Q202 A3
Q203 A3
R225 B4
R234 A3
R244 B4
R248 A3
R249 A3
R250 A3
R251 A3
R984 A4
R987 B3
D203 B2
D204 A4
D985 A2
DP251B2
IC251 B2
LD201A1
JW201B1
JW202B1
JW203A1

5-4 5-4
MISCELLANEOUS
ELECTRICAL PARTS LIST - KEY / LED BOARD
DP251 9965 000 12538 VFD DISPLAY
LD201 9965 000 17400 LED
SN201 9965 000 15935 IRT SENSOR RIM B38F
TA201 9965 000 20267 TACT SW SK1QN00048 160GF
TA202 9965 000 20267 TACT SW SK1QN00048 160GF
TA203 9965 000 20267 TACT SW SK1QN00048 160GF
TA204 9965 000 20267 TACT SW SK1QN00048 160GF
TA205 9965 000 20267 TACT SW SK1QN00048 160GF
TA206 9965 000 20267 TACT SW SK1QN00048 160GF
TA207 9965 000 20267 TACT SW SK1QN00048 160GF
TA208 9965 000 20267 TACT SW SK1QN00048 160GF
TA209 9965 000 20267 TACT SW SK1QN00048 160GF
TA210 9965 000 20267 TACT SW SK1QN00048 160GF
TA211 9965 000 12539 ROTARY ENCODER EC16B24-204
TA212 9965 000 12539 ROTARY ENCODER EC16B24-204
XL981 9965 000 12540 CRYSTAL 4.00 MHZ
DIODES
D201 4822 130 30621 1N4148
D202 4822 130 30621 1N4148
D203 4822 130 30621 1N4148
D204 4822 130 30621 1N4148
D985 4822 130 30621 1N4148
ZD201 4822 130 34233 BZX79-B5V1
ZD202 4822 130 34233 BZX79-B5V1
ZD203 4822 130 34233 BZX79-B5V1
TRANSISTORS & INTEGRATED CIRCUITS
Q202 9965 000 14175 2SA733Q,P
Q203 9965 000 14175 2SA733Q,P
Q204 4822 130 41198 2SC945P
IC251 9965 000 12550 IC PT6311(PTC)
IC981 9965 000 17447 IC S-CPU EM78P156ELP
Note : Only the parts mentioned in this list are normal service
spare parts.

POWER BOARD
TABLE OF CONTENTS
Internal IC Diagram & Voltage.........................................6-1
Circuit Diagtam...............................................................6-2
PCB Layout......................................................................6-3
Electrical Parts List...........................................................6-4
6-1
TL431 EQUIVALENT SCHEMATIC
TOP249 BLOCK DIAGRAM
6-1
PIN NO 1 2 3 4 5 6
Voltage 2.98 0 -0.6 0 2.6 154
PIN NO 1 2 3
Voltage 2.48 0 5.1
PIN NO 1 2 3 4
Voltage 27.7 26.6 2.5 16.7
IC903 (TOP249)
SN901 (SFH615-3)
IC904 (TL431)
Q903 (PN2222A)
PIN NO b c e
Voltage 0 31.5 0
PIN NO b c e
Voltage-14.1-4.49 -14.1
Q912 (2N7000)
Q910 (2N7000)
PIN NO b c e
Voltage-14.1-4.49 -14.1
Q904 (TIP120)
PIN NO b c e
Voltage 6.68 31.5 7.2
PIN NO b c e
Voltage 0.7 0.06 0
Q913 (2N7000)
ANODE
REF
CATHODE
2.4k
7.2 k

3.28 k

20 pF
4 k

1 k

800 

800 
800 
20 pF
150 

10 k

SHUTDOWN/
AUTO-RESTART
PWM
COMPARATOR
CLOCK
SAW
HALF 
FREQ.
CONTROLLED
TURN-ON
GATE DRIVER
CURRENT LIMIT
COMPARATOR
INTERNAL UV
COMPARATOR
INTERNAL
SUPPLY
5.8V
4.8V
SOURCE (S)
S
R
Q
D
MAX
STOP SOFT-
START
-
+
CONTROL (C)
LINE-SENSE (L)
EXTERNAL 
CURRENT LIMIT (X)
FREQUENCY (F)
-
+
5.8V
1V
I
FB
R
E
Z
C
V
C
+
-
LEADING
EDGE
BLANKING
÷8
1
HYSTERETIC
THERMAL
SHUTDOWN
SHUNT REGULATOR/
ERROR AMPLIFIER +
-
DRAIN (D)
ON/OFF
SOFT
START
DC
MAX
V
BG
DC
MAX
V
BG 
+V
T
0
OV/UV
V
I (LIMIT)
CURRENT
LIMIT 
ADJUST
LINE
SENSE
SOFT START
LIGHT LOAD
FREQUENCY
REDUCTION
STOP LOGIC
OSCILLATORWITH JITTER
VOLTAGE

6-2 6-2
CIRCUIT DIAGRAM
FEDCBA
FEDCBA
1
2
3
4
1
2
3
4
BR901 C1
C901 B1
C902 C1
C903 C1
C904 C2
C905 C1
C906 C1
C907 D1
C908 D1
C909 D1
C910 C1
C911 D2
C912 D2
C913 D2
C914 C3
C915 D2
C919 E2
C920 E2
C925 E2
C926 F2
C929 E1
C930 E1
C931 F2
C932 F1
C933 F1
C938 E2
C939 E2
C940 F2
C941 F2
C945 E1
C947 E1
C948 E1
C949 F1
C950 F1
C951 F1
C952 F1
C962 C3
C963 D1
C964 D1
C965 E1
C966 E1
C967 E1
C968 C1
C969 D2
C970 F1
C971 F2
C972 E2
CN902 B2
D901 C1
D902 C1
D903 C3
D904 D3
D905 E1
D906 E2
D907 E1
D908 E2
D909 E1
D910 E2
F901 B1
IC903 D2
IC904 E2
L901 F1
L902 F1
L903 F1
Q903 E2
Q904 F1
Q910 C3
Q912 C4
Q913 D3
R1 E2
R901 C1
R902 C2
R903 C1
R904 D1
R905 D1
R906 D1
R907 D2
R908 D2
R919 E2
R920 E2
R921 E2
R922 E2
R923 E2
R924 E2
R925 E2
R928 F2
R931 E1
R932 F1
R941 C3
R942 C3
R943 D4
R945 D4
R946 C4
R947 C4
R948 C4
R951 D3
R952 E1
R953 B1
R954 B1
RB904 F2
RB905 F1
RB906 F3
RL901 C2
RT901 A3
SN901 D2
T901 B1
T902 B2
T903 D1
ZD1 E2
ZD901 D1
ZD902 D3
ZD903 F1
ZD946 D4
For /221H /30 only