20
Digitron is lit but keys do
not operate.
Is each key pulse
applied to pin ,
and of IC701?
2
3
12
13
Check key matrix
circuit.
Check the pin serial of
pin , , , of IC701.
24
Power compensation
does not operated.
When mains is
unplugged is 3.6V at
pin and of IC601?
26
81
Is signal applied to
pin and of IC601?
42
43
Check IC601.
Check C623.
Check x602.
NO
YES
YES
YES
YES
NO
NO
B.
C.
YES
23 22 21
B.
C.
3-2. LOGIC CIRCUIT
19
Digitron does
not operate.
Is+5V supplied to
pin of IC701?
8
Is-24 V supplied to
pin of IC701?
11
Are -20 and -16.5V
supplied to pin and
of G701?
1
35
Are CLK signals
supplied to pin ,
and of IC701?
1
2
3
Is 5V at pin of
IC701?
7
Check X701
Change IC701
Check M801
Is+6V supplied
from D713 cathod
Change IC701
Change X701
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
A.
YES
Check M801
NO
Check M801
NO
Check IC601
NO
Summary of Contents for DV-F202 Series
Page 19: ......
Page 20: ...SECTION 5 CIRCUIT DIAGRAM 5 1 CONNECTION DIAGRAM CIRCUIT 33...
Page 21: ...5 2 POWER CIRCUIT 230V ONLY 34...
Page 22: ...5 3 POWER CIRCUIT WIDE RANGE 35 M M M M...
Page 24: ...5 4 SERVO LOGIC CIRCUIT 37 M M...
Page 25: ...5 5 LOGIC CIRCUIT WITH SHUTTLE STATION F542 F342 SERIES 38 1 3 2 1 2 3...
Page 26: ...5 6 LOGIC CIRCUIT F442 F242 F462 F262 F402 1 F202 1 SERIES 39 1 2 3 3 2 1...
Page 27: ...5 7 LOGIC CIRCUIT F562 F362 SERIES 40...
Page 28: ...5 8 LOGIC CIRCUIT F402 2 F202 2 SERIES 41 1 2 3 3 2 1...
Page 29: ......
Page 30: ......
Page 31: ...5 11 PIF CIRCUIT 44 M M M...
Page 32: ......
Page 34: ...5 13 VIDEO CIRCUIT 47...
Page 35: ......
Page 36: ...5 14 OSP CIRCUIT 48 5 15 COLOR CONVERTER 49...
Page 37: ...5 17 IF MODULE CIRCUIT 51 5 16 LINEAR AUDIO CIRCUIT 50 M M M M M M M...
Page 38: ......
Page 39: ...5 19 VPS PDC CIRCUIT AUTO SET 53 5 18 VPS CIRCUIT 52...
Page 40: ...5 21 REMOCON CIRCUIT VR F2BC 55 5 20 REMOCON CIRCUIT VR F3BC 54...
Page 41: ...5 22 REMOCON CIRCUIT VR F2BT 56...
Page 50: ......
Page 51: ......
Page 52: ......
