Sanyo VHR-M261EV Service Manual page 29

3. Y/C CIRCUIT
(4) When the Video signal doesn't appear on the screen in REC Mode,
Is the EE signal normal?
YES
Is 5V applied to the IC301
Pins 16, 40, 55, 58, 87?
YES
Does PB Mdoe operate
normally?
YES
Does the RF signal appear
at the IC301 Pin 12?
YES
Does the REC RF signal
appear at the IC301
Pin 90?
YES
Check the Drum &
Drum Connector
NO
Check EE Mode.
NO
Check the line of the 5.2V
Line.(Power Circuit)
NO
Check PB Mode.
Is the REC 'H' signal
NO
(about 4V) applied to the
IC 301 Pin 30?
Check REC Luminance
Pass & Color Pass.
NO
Check the circuit of the
IC301 Pin 90, 92, 94.
3-14
NO
YES
YES
YES
Check the System of REC
'H'. (the IC501 Pin 79
/ the D301)
Replace the IC301.