Service manual

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C10
SERVO CIRCUIT WAVEFORMS
WAVEFORM
TEST POINT
LOCATION
WAVEFORM
TEST POINT
LOCATION
IC301
PIN 9,10
REC
2V/div.
20µs/div.
IC301
PIN 85
REC
2V/div.
10ms/div.
IC301
PIN 93
REC
2V/div.
200µs/div.
WF-S-EC4Q
IC301
PIN 96
REC
100mV/div.
10ms/div.
IC301
PIN 98, 99
REC
2V/div.
500ms/div.
IC304
UP : PIN 23
LOW :PIN 18
REC
5V/div.
500µs/div.
IC301
PIN 89
PB
1V/div.
10ms/div.
8G9G
a 1a 1a 1a 1a
1b 1b 1b 1b
1c 1c 1c 1c
1d 1d 1d 1d
1e 1e 1e 1e
1f 1f 1f 1f
1g 1g 1g 1g
2a 2a 2a 2a
2b 2b 2b 2b
2c 2c 2c 2c
2d 2d 2d 2d
2e 2e 2e 2e
2f 2f 2f
2f
2g 2g 2g 2g
1a
1b
1c
1d
1e
1f
1g
1h1h
1a
1b
1c
1d
1e
1f
1g
2a
2b
2c
2d
2e
2f
2g
1h
2a
2b
2c
2d
2e
2f
2g
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
7G 6G 5G 4G 3G 2G 1G
1G2G3G4G5G6G7G8G9G
1a1a
2a 2a 2a2a2a2a
2d
2g
1a
a
b
c
c
h
h
e
d
1b
1b
1g
1g
1g
1g
1c
1c
1d1d1d
1a 1a 1a
1d
1e
1e
1
h
1
b
1
b
1
f
1
f
2
b
2
c
2
e
2
f
1
e
1
e
1
c
1
c
1
h
1f1f
1h
1h
1h
GR-01702
(UPPER)
(UPPER)
(LOWER)
(LOWER)
DISPLAY (FLD) GRID/ANODE ASSIGNMENT DRAWING & TABLE