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3-10
4. Y/C CIRCUIT
4-1. No Video in EE Mode,
YES
No Video in EE Mode
NO
Does the
Video signal appear
at the IC301
Pin48?
Check the 19Pin of Tuner.
YES
YES
NO
Is 5V
applied to the IC301
Pins18, 24, 42, 55,
72, 91?
Check the 5.0VT, 5.3VA
Line. (Power Circuit)
NO
Chck the path of the signal
between the IC301 Pin65
and IC501 Pin49.
YES
YES
NO
NO
Does the Video
signal appear at the
IC301 Pin65?
YES
Does the Video
signal appear at the
IC501 Pin47?
Is I
2
C BUS
signal applied to the
IC301 Pins68,
69?
Replace the Q309.
YES
Check C316. (AGC)
YES
Replace the IC301.
Check the System Circuit.
(Refer to “SYSTEM I
2
C BUS
Check Trouble Shooting”)
NO
NO
Does the Video signal
appear at the Emitter
terminal of the Q309?
Does the
12VT, 5.3VA appear
at the Emitter terminal
of the Q309.
Check the 12VT, 5.4VA
Line. (Power Circuit)
VCR ELECTRICAL TROUBLESHOOTING GUIDE
Summary of Contents for DVP3350V/01
Page 17: ...2 8 MEMO ...
Page 45: ...3 37 3 38 5 TUNER CIRCUIT DIAGRAM ...
Page 51: ...3 49 3 50 IC301_LA71750EM IC501_MN101D10X IC801_TDA9605H IC751_MSP3417 3407 ...
Page 52: ...3 51 3 52 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP SIDE ...
Page 53: ...3 53 3 54 2 MAIN P C BOARD BOTTOM SIDE ...
Page 54: ...3 55 3 56 3 POWER P C BOARD ...
Page 55: ...3 57 3 58 4 KEY P C BOARD ...
Page 77: ...3 80 MEMO ...
Page 78: ...3 81 3 82 CIRCUIT DIAGRAMS 1 MPEG CIRCUIT DIAGRAM ...
Page 79: ...3 83 3 84 2 SERVO CIRCUIT DIAGRAM ...
Page 80: ...3 85 3 86 3 JACK CIRCUIT DIAGRAM ...
Page 113: ...4 32 MEMO ...
Page 119: ...5 6 MEMO ...
Page 121: ...5 9 5 10 MEMO MEMO ...