Sony AVD-K600P Service Manual page 23

(4) When the Video signal doesn't appear on the screen in REC Mode,
REC mode
YES
Is EE mode normal?
YES
Is brightness normal?
YES
Is the brightness signal sup-
plied to IC301 Pins18?
YES
Check the power of Pins23,
44, 45, 52, 68, 77.
YES
Check the REG 5V power
NO
Check the EE mode
YES
YES
Is color normal?
NO
NO
Does signal appear at
IC301 Pins41, 50?
NO
Is 5V supplied to IC301
Pins23, 44, 45, 68, 77?
YES
Is Y/C Bus applied to
IC301 Pins53, 54, 55?
YES
Do X301 and X-TAL
oscillate?
A
YES
Is V.H SW supplied to
IC301 Pin57?
YES
Does the FM signal appear
at IC301 Pins73(SP)/
66(EP)?
YES
Replace the IC301.
YES
A
YES
Check X301 oscillation
frequency.
NO
Check the 5V power
NO
Check system part
NO
Check X301.
NO
Check system part
(V.H/SW)
NO
Check the drum
*OPTION
Pins72, 73, 74(SP)
Pins65, 66, 67(EP)
AVD-K600P
23