Display Board; Main Board - Sony STR-DE875 Service Manual

IC102 NJU3719L

(DISPLAY BOARD)

PARALLEL
P11 1 DATA
OUTPUT BUFFER
P12 2
P13 3
P14 4
LATCH
P15 5
CIRCUIT
P16 6
P17 7
VSS 8
SHIFT
P18 9
REGISTER
P19 10
P20 11
CONTROL
P21 12
CIRCUIT
P22 13
P23 14
P24 15
IC302 TC9273N-006

(MAIN BOARD)

VSS 1
S1 2
S2 3
S3 4
S4 5
S5 6
10BIT
S6 7 LATCH
CIRCUIT
(L-CH)
S7 8
S8 9
S9 10
S10 11
S11 12
GND 13
LEVEL SHIFT & SHIFT REGISTER
CK 14
30 VDD
29 P10
28 P9
27 P8
26 P7
25 P6
24 P5
23 P4
22 P3
21 P2
20 P1
19 CLR
18 STB
17 CLK
16 DATA
28 VDD
27 S1
26 S2
25 S3
24 S4
23 S5
10BIT
LATCH 22 S6
CIRCUIT
(R-CH)
21 S7
20 S8
19 S9
18 S10
17 S11
16 STB
15 DATA
IC501 µPC2581V (MAIN BOARD)
IC551 µPC2581V (MAIN BOARD)
BIAS CIRCUIT
PROTECTOR
PRE
REG DRIVE
DRIVE
2 3 4 5 6
1 7
IC601 STK350-230 (MAIN BOARD)
INPUT 1
NF 2
3
4
-VEOUT 5
+VEOUT 6
R4
TR5
V 7
SS
GND
8
D1 D2
V 9
CC
R9
TR8
IC201 NJM2296D (S-VIDEO BOARD)
IC202 NJM2296D (S-VIDEO BOARD)
IC251 NJM2296D (VIDEO BOARD)
V+ Vout2 SW1 Vin1
16 15 14
S6
S5
S3
1 2 3
Vout1 SW5 Vin5 SW3
STR-DE875/DE975
PRE
DRIVE
DRIVE
8 9 10 11 12 13 14 15
TR3 R1
TR1
TR2
TR4
R2
R6
TR7
TR6
R3
D4 D3
R5 R8 R7
GND Vout3 SW2 Vin2
13 12 11 10 9
S7
S1
S2
S4
4 5 6 7 8
Vin4 SW4 Vin3 V-
31