Sony VPL-CS4 Service Manual page 84

BB Board
TP401
FB102
C101 R117
D102
C102 R118
D103
C103 R122
C116
D104
C117
R132
C108
C122
R128
D105
R120 C128
C142
R133 C137
IC105
IC101
IC104 IC106
24LC21AT/SN (IC101)
H/V
GENERATOR
SDA
5 I/O MEMORY
EEPROM
VCLK CONTROL CONTROL XDEC
7
ARRAY
LOGIC LOGIC
SCL 6
PAGE LATCHES
YDEC
VCC
8
VSS
4
SENSE AMP
R/W CONTROL
1 2 3
NC NC NC
74VHC240MTCX (IC105)
20 19 18 17 16 15 14 13 12 11
1 2 3 4 6 7 8 9 10
5
TP101
C205
TP102
IC108
C203
TP103
C209
C222
R215
74VHC125MTCX (IC203, 304)
OE
14 VCC
1 1
OE
2 13
1A 4
1Y 3 12
4A
OE
2 4 11
4Y
OE
2A 5 10 3
2Y 6 9 3A
8
GND 7 3Y
BB BB
C323
IC205
R316
R312
FB303
FB301
C335
IC303
D301
IC302
CN102
CXA1875AM (IC107)
16 15 14 13
LEVEL
CONVERTER
LEVEL
CONVERTER
POWER
ON
RESET
LATCH LATCH
– DAC DAC
+
VCC
REG
AMP AMP
1 2 3 4
6-8 6-8
IC405
RB403 RB402
RB404 RB405
R447
R446
R248
RB413 RB412 RB411 RB410
IC304
LP2985IM5X-3.3 (IC201, 404)
12 11 10 9
ON/OFF 3
OPEN COLLECTOR
LEVEL
LATCH
CONVERTER
4
I 2 C DECODER
LATCH LATCH LATCH
DAC DAC DAC
AMP AMP AMP
5 6 7 8
IC401
IC402
BB
-A SIDE-
SUFFIX: -12
V
IN
1
V 1.23V
REF
5 V OUT
OVER CURRENT/
OVER TEMP
PROTECTION
2
VPL-CS4/CX4