Philips DVDR3320V/01 Service Manual page 28

VCR ELECTRICAL TROUBLESHOOTING GUIDE
3. Y/C CIRCUIT
(3) When the C(Color) signal doesn't appear on the screen in PB Mode,
Is 5.0V 5.3VA applied to the
IC301 Pins24, 42, 55, 72, 81.
YES
Is the Color Rotary signal
applied to the IC301 Pin70?
YES
Is Color Rotary "H" about
3.4V?
YES
Does the Color signal
appear at IC301
Pin25?
YES
Replace the IC301.
NO
NO
NO
NO
Does the X301
(4.43MHz) osxillate?
Does the Color signal
appear at IC301 Pin48?
Replace the IC301.
3-14
Check the line of the 5.0V
5.3VA Line. (Power Circuit)
Check the Color Rotary
Circuit. (IC501 Pin98)
Check the Color Rotary
level. (Check the R303)
NO
NO
YES
Replace the X301.
Check the Color Pass.