Sony PFM-500A3WE Service Manual page 164

1
2
B1
-A SIDE-
SUFFIX: -11
3
B1
-B SIDE-
SUFFIX: -11
4
TC74HC123AF(EL) (IC401)
A 1
B 2
RD 3
Q Q
Q 4
D
Q Q
Q 5
RD
5
C 6
R
7
GND 8
A B
1
CN401
5P C401
4.7
16V
R IN
5
2
GND 4
G
G IN
3
C402
4.7
GND 2
16V
B
B IN
1
C403
TO B BOARD 4.7
16V
3
CN16
6
CN402
5P
B OUT
1
5V-3 2
G OUT
3
5
GND 4
R OUT
5
TO B BOARD
CN17
4
R414
2.7k
:RN-CP
CN403
3P
RED
:ELCO
SYNC_HS 1
GND 2
CP.P 3
TO B BOARD
CN19
16 VDD
15 R
14 C
RD
13 Q
12 Q
11 RD
10 B
9
A
C
B1 B1
Q401 Q402 Q403 Q404 Q405
2SC2412K 2SC2412K 2SC2412K 2SA1037AK 2SA1037AK
CLAMP BUFF CLAMP BUFF CLAMP
R403 C405 R406 R407
4.7k 10 1k 2.7k
R 0.1
:RN-CP 16V :CHIP :RN-CP
2.2 2.2
1.8 2.2
R405
100
:CHIP
R401
1.6 4.8
100 R402
:CHIP 1k R404
1.6
:CHIP 2.7k
:RN-CP
C404
0.1
Q406 Q408
25V
2SC2412K Q407 2SC2412K B:CHIP Q409 Q410
2SC2412K 2SA1037AK 2SA1037AK
CLAMP
CLAMP BUFF BUFF CLAMP
R431
2.7k R410 C407 R413
:RN-CP 4.7k 10 1k
2.6
:RN-CP 16V :CHIP
2.4
2.4 1.8 2.4
R412
100 2.4
:CHIP
R408
1.8 1.8 4.8
R432 100
C413 2.7k :CHIP
:RN-CP
0.1 R409 R411
B:CHIP 1k 2.7k C406
:CHIP :RN-CP 0.1
Q411 25V Q414 Q415
2SC2412K Q412 Q413 B:CHIP 2SA1037AK 2SA1037AK
2SC2412K 2SC2412K
+5V
CLAMP BUFF CLAMP BUFF CLAMP
R418 C409 R421
4.7k 10 1k
0.1
:RN-CP 16V :CHIP
R424
22
2.2 :CHIP
2.2 1.8 2.2
R420
100
R416 :CHIP
1.6 1.6
100
:CHIP
4.8
R417 R419 C408
1k 2.7k 0.1
:CHIP :RN-CP 25V
R415
B:CHIP
2.7k
:RN-CP
B
G
R
B1 Board Waveforms
1
Y/C
600mVp-p (H)
5
Y/C
680mVp-p (H)
9-30 9-30
D E
R436
15k
:RN-CP R422
22
:CHIP
R434
2.2k
:RN-CP
+5V
R426 R428
R427 C411 R429
15k 27k
12k 0.1 100k
:RN-CP :RN-CP
:RN-CP 25V :RN-CP
B:CHIP
R423
22
:CHIP 4.5
7
R425 A VCC
1k 0.1 4.4
:RN-CP
B RC
0 4.4
CLR C
4.7 0.2
C412
C415
Q Q
100p
100p
0.1
CH:CHIP
CH:CHIP
Q
Q
0
8
C CLR
4.9
CR
B
0.2
C410
GND A
47p
CH:CHIP
IC401
TC74HC123AF
PULSE GEN
2 3 4
Y/C Y/C
680mVp-p (H) 580mVp-p (H)
6 7 8
Y/C Y/C
420mVp-p (H) 4.8Vp-p (H)
F
C414
0.1 R433
25V 2.2k
B:CHIP :RN-CP
4.5
3.9
Q417
2SA1037AK
3.9
Q416
2SA1037AK
R435
10k
:RN-CP
B1
(PULSE GEN.)
B-SS9695UC-B1.-P1
Y/C
400mVp-p (H)
Y/C
4.8Vp-p (H)
PFM-500A3WE/500A3WG/500A3WU/510A2WE/510A2WG/510A2WU
G H