H3, H1, H2, And T Block Diagrams - Sony KF-42WE620 Service Manual

H3, H1, H2, AND T BLOCK DIAGRAMS

J40
3 4
1 2
S VIDEO
D40
V
VIDEO
VIDEO 2 INPUT
L L
(MONO)
AUDIO
R
D51 D50 D49
H3
(VIDEO 2 INPUT)
T
(LAMP DOOR SWITCH)
S3999
(LAMP DOOR)
CN3999
C LAMP COV 3
GND 1
TO A BOARD
CN8014
KF-42WE620/50WE620
CN44
1
1 SDA-E F
2 2 SCL-E
TO A2 BOARD
CN8023
IC41
EEPROM
CN43
1 V2-SW
2 V2-S2
4 V2-C
I
6 V2-Y
8 V2-V
V2-L
10
TO U BOARD
12 V2-R CN9400
S175
TV/VIDEO
IC171
OUT
CN171
4 SIRCS E
2 KEY
TO A BOARD
CN8001
S173 S172 S171 S174
VOLUME + CHANNEL - CHANNEL + VOLUME
H1
(KEY INPUT,SIRCS)
Q4504,4511
POWER/
G
LED DRIVER
STANDBY
D4504
R
Q4503,4510
8
LED DRIVER
Q4509
D4503 7
TIMER
LED DRIVER
Q4508
LAMP D4510 6
LED DRIVER
5
4
3
S4501
2
POWER
1
STBY
+5V
H2
(POWER SWITCH)
KF-42WE620/50WE620
CN4502
STBY LED
TIMER LED
B
LAMP-LED
TO A BOARD
GND CN8002
P-ON
STBY+5V
GND
POW_LED
100