Text preview for : Chassis 3P52E.pdf part of China Service Manual



Back to : Chassis 3P52E.part1.rar | Home

SERVICE MANUAL

3P 5 2E CHASSIS




2 3
TV/AV
4 5 6
MUTE
7 8 9
MENU
--/--- 0 AV/TV

VOL.+


PROG.+ VOL.-

VOL.- MENU VOL.+ PROG.+

PROG.- PROG.-

Q.VIEW S.S. P.P.




LOCK TEXT SCAN
MIX

INDEX HOLD SUB.PAGE



CANCEL SIZE REVEAL




Design and specifications are subject to change without prior notice.
( ONLY REFERRENCE)




ENGINEER BY: _____ CHECKED BY:_____ PPROVED BY: _____
SW201 SW202 SW203 SW204 SW205 SW206 SW207




Lo/BS2(SDA)
Mi/BS1(SCL)




i.c.(+33V)
U101 R009 100




4


3


2


1
M001




i.c.(V+)




IFGND
Hi/n.c.
AGC 38.9MHz C001 10nF




1 2 3
VT




V+




i.c.




Vss
IF




n.c.
A2




WP
R236 R237 R238 R239 R240 R241
24C08
1


2


3


4


5


6


7


8


9


10


11
IC102
+33V
820 1.5K 1.8K 3.3K 3.3K 5.6K




SDA




PTC
SCL




Vdd
AGC
R104 220 +5V
LED001 R008 1K




5


6


7


8
L101 R107 C104 C118 33pF KEYBOARD CIRCUIT
IC103 R103 C103 R106 0.01u R515 R516




8V
C111 R109 0.01u 1K 0.82* 470* R130 R131 R132 ZD103 8V2 15K/2W 220/1W
C109 C110 4.7K




+5V
KEY
100P +33V D504




IR
R109 100 6.8K 6.8K 3.3K H501 BAV21
+
R114 IF R135 470 R510 Q506
4.7K + C1010.01u C105 R134 R133 C118 BF422
10u 100P 100 R230 BL 47
50V C112 0.01uF 100 100 10nF R Q504
4.7K R112 C114 C102 0.01uF G BF422
100P D101 Q201 STANDBY 1 64 220 Q505
100 1N4148 47uF Standby IRin B R511 R513 BF423
R113 C1815 R105 R512
R102
2
SCL Mute
63 GND 2.2K 270 47
R101 33 SCL R514
3 62
75 1K SDA WF/TBS/BBE
D503 C502 330
+5V DVD_OPT SDA 4 IC201 61 +3.3V +3.3V
1N4148 390pF
+5V + C113
5
Tuning

TDA83731
VddP
60 L106 R526 R
100uF L102 System Reset
L107 GND
111 SCART_OPT 6 59 X101 C147 33pF C145 +C146 10uH GND 220/1W




BAV21
Key0 XTALout 10uH R525




D506
R119 1K CRT
7
key1 XTALin
58 100uF 0.1uF 15K/2W Q509
R116 1K 8 57 12MHz C148 33pF C149 + C150 R425 39K R521 BF422 R517 1K/1/2W
A/D OscGnd
R115 1K Q103 9 56 R426 27K 47 Q507 G R527 1K/1/2W
R110 C115 Vss C/P VddC 10nF 100uF BF422 R508 1K/1/2W
R108 Q102 R117 C1815 8V2 ZD104
75 0.01u 10
L VpE
55 Q508
33 C1815 1K R118 1K 8V2 ZD105 1




R523
11 54 R520 R522 BF423 C507




270
SDA H VddA GND 2.2K 47
L104 10uH R118 3.3K R144 100 8V2 ZD106 2 10uF/250V G3 G2 G1
+8V
12
VssA Bout
53
B C503 R524 B
SCL C129 220pF 13 52 R143 100 3 390pF 330
SECPLL Gout G




+
C127 220nF




CRT AMPLIFY CIRCUIT
C128 10nF 14 51 R142 100 4 D505
Vp2 Rout R GND R519 1M D507
GND 21 +8V 15 50 R141 10K 5 1N4148 BA158
DECDIG Blanking BL BCL 0.1uF/250V
VI 20 C719 10uF C132 4.7nF C130 220nF 16 49 R424 10K
L709 1uH PH2LF BCLin
R507
R138




2n2/2KV
VO 19 C131 2200pF B in




R529
C133




220K



C505
L708 1uH C713 10uF 17
PH1LF B2/Uin