Audio Troubles (Hi-Fi Models); No Sound In E-E Mode - Sanyo DVR-V100E Service Manual

TROUBLESHOOTING
2) VCR Part
Record video signal poor.
Check EE MODE.
YES
Is luminance and color signal NO Is signal input into IC301
output from IC301 pin#78?
pin# 48,50,52,54,56?
YES
NO
Check POWER circuit.
Is +5V supplied at IC301 pin#91?
YES
NO
Is IC301 pin#80 REC(H) HIGH? Check IC501 pin#45.
YES
Is VIDEO SW Pulse input at IC301
NO
Check IC501 pin#18.
pin#70?
YES
Is REC signal output from IC301
NO
pin#94,95,89,90?
LP MODE: 89,90 Pin
SP MODE: 94,95Pin
Check video HEAD and Connector.
Replace IC301.
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4. AUDIO (Hi-Fi MODEL)
A. No sound in E-E mode
a. RF E-E
No sound in RF E-E mode
Is 5V obtained at IC051 pin#1?
YES
Is there SIF signal at IC051 pin#2
in RF mode?
YES
Is there SIF signal out at IC051
pin#30, 31?
YES
Is 12V obtained at IC251 pin#34?
YES
Is 5V obtained at IC251 pin#40?
YES
NO
Is Audio signal output at IC251
Are CLK and DATA obtained at
pin#16,17?
IC251 pin#42,43?
YES
NO
Is Audio signal output at IC602 pin
#3, 13?
YES
Check Output JACK.
TROUBLESHOOTING
NO
Check Power circuit.
NO
Check RF101.
NO
Check IC051.
NO
Check POWER circuit.
YES
Replace IC251.
Check IC602.
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