3-7
3. SERVO CIRCUIT
(1) Unstable Video in PB MODE
Unstable Video in
PB Mode.
Does the Noise level of the
screen change
periodically?
Replace the IC501.
Refer to “When the Y signal
doesn’t appear on the
screen in PB Mode”.
Does the CFG waveform
appear at the IC501
Pin67?
On tracking do the CTL
pulses move?
Does the Video Envelope
waveform appear at the
IC501 Pin82?
Replace the IC501.
YES
YES
YES
YES
YES
NO
NO
(2) When the Drum Motor
(2)
doesn’t run.
Do the DFG Pulses appear
at the PMC01 Pin11?
Replace the Cap M.
Aren’t the foil patterns and
the Components between
IC501 Pin 104 and PMC01
Pin11 short?
Replace the IC501.
Refer to “(2)
No 12VA of Power section”
Do the Drum PWM Pulses
appear at the IC501
Pin34?
Aren’t the foil patterns and
the Components between
IC501 Pin34 and PMC01
Pin12 short?
Do the DFG Pulses appear
at the IC501 Pin104?
Do the Drum PWM Pulses
appear at the IC501
Pin34?
Aren’t the connecting patterns and the Components
between IC501 Pin34 and PMC01 Pin12 short?
When the Drum Motor
doesn’t run,
Does 12V appear at the
PMC01 Pin8?
Does 2.8V appear at the
PMC01 Pin12?
Check the connector
(PMC01) and the Drum
Motor Ass’y.
NO
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES
Summary of Contents for DVP3350V
Page 35: ......
Page 52: ...3 51 3 52 IC301_LA71750EM IC801_TDA9605H IC501_MN101D10X IC751_MSP3417 3407 ...
Page 53: ...3 53 3 54 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD TOP SIDE ...
Page 54: ...3 55 3 56 2 MAIN P C BOARD BOTTOM SIDE 2 MAIN P C BOARD BOTTOM SIDE ...
Page 56: ...3 59 3 60 4 KEY P C BOARD ...
Page 57: ...3 61 3 62 ...
Page 71: ...3 76 FIG 7 2 DVD FIG 7 3 CD FACT FACT FE FE SBAD SBAD ...
Page 72: ...3 77 FIG 7 4 CD 8 FOCUS ON WAVEFORM FIG 8 1 DVD FE FOSO FACT FACT FACT FE SBAD ...
Page 78: ...3 83 2 Audio Related Signal FIG 14 2 AOUT0 ABCK ALRCLK ...
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