Daewoo DF-5500(S/P) Service Manual page 15

DF-5500/DFX-5502 SVC 2006.10.14 10:6 AM
TROUBLESHOOTING
C. No Recording
1) VCR Part
Record video signal poor.
Check EE MODE.
YES
Is luminance and color signal
output from IC301 pin#78?
YES
Is +5V supplied at IC301 pin#91?
YES
Is IC301 pin#80 REC(H) HIGH?
YES
Is VIDEO SW Pulse input at IC301
pin#70?
YES
Is REC signal output from IC301
pin#94,95,89,90?
SP MODE: 89,90 Pin
LP MODE: 94,95Pin
Check video HEAD and Connector.
˘ ` 14 mac001 1200DPI 80LPI
NO Is signal input into IC301
pin# 48,50,52,54,56?
NO
Check POWER circuit.
NO
Check IC501 pin#1.
NO
Check IC501 pin#18.
NO
Replace IC301.
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