Sony RM-PJM15, Руководство по обслуживанию

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7-19 7-19
VPL-PX32
BA Board Waveforms
1 2 3 4
5 6 7 8
9 0 !- !=
![
1.0 Vp-p
TP100
[VIDEO]
0.7 Vp-p
TP106
[R-Y/R]
0.7 Vp-p
TP107
[Y/G]
0.7 Vp-p
TP112
[B-Y/B]
5.0 Vp-p
TP115
[H.SYNC]
3.8 Vp-p
TP116
[V.SYNC]
0.7 Vp-p
TP103
[R-Y]
0.7 Vp-p
TP104
[B-Y]
0.6 Vp-p
TP105
[Y]
0.6 Vp-p
TP108
[R|OUT]
0.6 Vp-p
TP110
[B|OUT]
0.6 Vp-p
TP109
[G|OUT]
3.8 Vp-p
TP113
[SCP|IN]
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
1-C 1-CR 1-RD 1-CK 1-CK 1-Q 1-Q GND
VDD 2-C 2-CR 2-RD 2-CK 2-CR 2-Q 2-Q
MC74HC4538AFEL (IC257)
VIDEO
INPUT
VCC
BACK PORCH
DETECTOR
2
COMPOSITE
SYNC OUTPUT
1
BACK PORCH
OUTPUT
5
VERTICAL SYNC
OUTPUT
3
HORIZONTAL
OUTPUT
7
8
RESET 6
VOLTAGE
REGULATOR
TIMING
CURRENTS
D
NO SYNC
V1
V2
C SYNC
Q
Q CLK
VERTICAL
DETECTOR
GS4981 (IC256)
LATCH
DAC
AMP
LATCH
DAC
AMP
LATCH
DAC
AMP
LATCH
DAC
AMP
LATCH
DAC
AMP
+
—
VCC
REG
I
2
C DECODER
LEVEL
CONVERTER
LEVEL
CONVERTER
LEVEL
CONVERTER
LATCH
POWER
ON
RESET
OPEN COLLECTOR
3 6
2
5 8 1 4 7
SW1 SW0
DAC4 DAC3 DAC2 DAC1 DAC0
GND
14 11 15 12 9 16 13 10
VCC SCL SDA SAD2 SAD1 SAD0 SW3 SW2
CXA1875AM-T4 (IC250)
2
1
9
42
CPO VCV PLSL FIN CKSL
44 39
37
38
ADIN
AYO
7 ACO
CLPO
A/D
VCO 1/4
1/2
DL D/A
D/A
NTSC:1H
PAL :2H
NTSC:1H
PAL :2H
CLAMP
+
-
+
-
SW
SW
4fsc
VERTICAL
BORDER EMPHA
ADAPTIVE
FILTER OP
LOGICAL OPERATION
PHASE
COMPARATOR
CXD2064Q-T6 (IC221)
1
2
3
4 5
6
7
8 COMMON
INH
VEE CH1
A
CH0
VDD
VSS
LOGIC LEVEL
CONVERTOR
OUT IN
C
OUT IN
C
TC4W53F (TE12R) (IC251, 103)
BA BA