3-4
5. No Tuner Sound
YES
Is the IC715,IC717-3 :
in Tuner Mode high?
Audio
signal appears even in the
outside input 1
Check
IC2072 -16,17 signal flow.
Check IC701 power and:
ambient circuits Check X704
vibration.
Check <No audio appears in
the outside input 1 mode>.
Check IC2084-11,38 signal
flow
NO
NO
NO
NO
YES
YES
No audio signal output
in the IC 701 -30,31
YES
Check C709,TUNER signal
flow
NO
Check IC701 -2
: SIF signal input
YES
Check IC704 power and
ambient circuits.
NO
Is the
IC704 -69 high after reset signal
in change of channel?
YES
Check IC706 power and
ambient circuits.
NO
No Sync signal input:
in the IC704 -39.
YES
Check Q724 (V. Buffer TR)
circuit.
TUNER power and ambient
circuit.
NO
No TUNER VIDEO
signal input.
YES
Check IC2072 -16,17 signal
flow
Summary of Contents for DVR313 Series
Page 28: ...3 23 3 24 CIRCUIT DIAGRAMS 1 POWER CIRCUIT DIAGRAM 03 02 22 R17171A...
Page 29: ...3 25 3 26 2 FRONT CIRCUIT DIAGRAM...
Page 30: ...3 27 3 28 3 E5 BGA POWER UART2 CIRCUIT DIAGRAM 03 02 22 R17161A...
Page 31: ...3 29 3 30 4 DDR SDRAM FLASH CIRCUIT DIAGRAM 03 02 22 R17171A...
Page 32: ...3 31 3 32 5 RST CONTROL STATUS REG ATAPI HOST CPLD LATCH CIRCUIT DIAGRAM 03 02 22 R17162A...
Page 33: ...3 33 3 34 6 1394 ETHERNET CONNECTOR CIRCUIT DIAGRAM 03 02 22 R17163A...
Page 34: ...3 35 3 36 7 VIDEO IN OUT CIRCUIT DIAGRAM 03 02 22 R17164A...
Page 35: ...3 37 3 38 8 AUDIO IN OUT NON STD VIDEO CIRCUIT DIAGRAM 03 02 22 R17165A...
Page 36: ...3 39 3 40 9 A V 1394 IN JACK CIRCUIT DIAGRAM 03 02 22 R17170A...
Page 37: ...3 41 3 42 10 AUDIO IN OUT CIRCUIT DIAGRAM 03 02 22 R17166A...
Page 38: ...3 43 3 44 11 I O MICOM CIRCUIT DIAGRAM 03 03 31 R17167B...
Page 39: ...3 45 3 46 03 03 31 R17168B 12 TUNER VIDEO IN OUT CIRCUIT DIAGRAM...
Page 43: ...3 53 3 54 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE LOCATION GUIDE...
Page 44: ...3 55 3 56 2 MAIN P C BOARD BOTTOM SIDE LOCATION GUIDE...
Page 45: ...3 57 3 58 3 I O P C BOARD LOCATION GUIDE 4 JACK P C BOARD...
Page 46: ...6 KEY P C BOARD 3 59 3 60 5 FRONT P C BOARD LOCATION GUIDE Solder Side...
Page 47: ......
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