Servo Circuit Waveforms; Display(Fld) Grid/Anode Assignment Drawing & Table; Board Key Switch - Sanyo SRT-4040 Service Manual

K
J
I
H

SERVO CIRCUIT WAVEFORMS

TEST POINT TEST POINT
WAVEFORM
LOCATION LOCATION
G
IC301 IC301
PIN 9,10 PIN 98, 99
REC REC
2V/div. 2V/div.
20µs/div. 500ms/div.
F
IC301 IC304
PIN 85 UP : PIN 23
REC LOW :PIN 18
REC
2V/div.
5V/div.
10ms/div.
500µs/div.
E
IC301 IC301
PIN 93
PIN 89
REC PB
2V/div. 1V/div.
200µs/div. 10ms/div.
D
IC301
PIN 96
REC
100mV/div.
10ms/div.
C
B
A
1 2 3 4
DISPLAY(FLD) GRID/ANODE ASSIGNMENT DRAWING & TABLE
9G 8G 7G 6G 5G 4G 3G 2G
WAVEFORM
m
m
m
m
9G
a
b n
c a
d
b
e c
f
d
g
e
h f
i g
WF-S-EC4Q
j m
k
l
5 6 7 8
1G
col1
col2
a
n
f
b
n n
g
m m
e
c
m
d
8G 7G 6G 5G 4G 3G 2G 1G
- n n - - n - n
a a a a a a a a
b b b b b b b b
c c c c c c c c
d d d d d d d d d
e e e e e e e e e
f f f f f f f f f
g g g g g g g g
m m m m m m m m
col2 col1
- - - - - -
GR-04100
TM-1
T1-80970/NB4QR-NA
9 10 11 12
C14
TM-1 BOARD KEY SWITCH
D7125
6 5 4
* * *
3 2 1
* *
S7125
ON-OFF
J7151
5.0
EEPROM RESET
(NOT MOUNT)
J7150
5.0
Q7133
DTC114EL
DRIVE
NOTE NOT SPECIFIED DIODES:1SS133 or GMA01
13 14 15 16
K
J
CN711
08
I
REPEAT LED
1
k SEG K
2
j 3 SEG J
i SEG I
4
h SEG H
5
g SEG G
6
f 7 SEG F
b SEG B
8
H
TO CP-1(TM-A)
CN741
G
CN712
05
F
1 ALL CLEAR
KEY 3
2
KEY 2
3
KEY 1
4
5 KEY 0
TO CP-1(TM-A)
CN742
E
S7126
D
C
CN713
03
SWD 5V
1
2 GND
ALWAYS 5V
3
TO CP-1(TM-A)
CN743
B
A
17 18 19