Read Sharp VC-ME80HM Service Manual online
47
VC-ME80GM
VC-ME80HM
VC-ME80HM
NO
FLOW CHART NO.20 PLAYBACK MODE TROUBLESHOOTING
Playback picture does not appear(E-E mode is possible).
Is there FM signal input in the
pin(78) of IC201?
Check line between pins(79)
and (78) of IC201.
NO
YES
NO
YES
NO
Is there luminance signal
output in the pin(79) of IC201?
YES
YES
YES
YES
YES
YES
Is the supply V-H.SW.P.
signal fed to pin(81) of IC201?
NO
NO
NO
Is there luminance signal input
in the pin(23) of IC201?
Check line between circuit of
pins(39) and (26) of IC201.
(C212)
Is CCD control voltage approx. 5V applied normally to the pin(37) from pin(57) of IC201?
Is clock signal (approx. 8.86MHz/0.5Vp-p) for CCD applied normally to the pin(44) from (69) of IC201?
Is there luminance signal
output in the pin(39) of IC201?
Check peripheral circuit of pins
(13), (14) and (17) of IC201.
S-PICTURE circuit (Q201-6).
NO
Is there luminance signal input
in the pin(19) of IC201?
Check line between pins(18)
and (19) of IC201. (C206)
NO
Is there luminance signal input
in the pin(42) of IC201?
Check line between pins(21)
and (24) of IC201. (C208)
NO
NO
YES
YES
YES
YES
Is voltage of 5V applied to the
chroma power terminal pin(61)
of IC201?
Check peripheral circuit
pin(61) of IC201 and PC 5V
line.
NO
Is there chroma signal input in
the pin(46) of IC201?
Check line between pin(60)
and (46) of IC201. (C512)
NO
Is there chroma signal input in
the pin(58) of IC201?
Check whether the pins(73)
and (75) of IC201 oscillate
4.43MHz.
Check line between circuit of
pins(58) and (35) of IC201.
(C515)
Check parts around of X501.
YES
NO
Is there chroma signal output
in the pin(35) of IC201?
YES
Although picture playback is possible, colour does not
appear in PAL mode (E-E mode is possible).
Replace IC201.
Replace IC201.
Check V-H.SW.P. line.
Is voltage 5V applied to the CCD section power terminal at pin(36) of IC201?
Check line between circuit of pins(24) and (23) of IC201. (C210)
Is there luminance signal input
output in the pins(13), (14)
and (17) of IC201?
Is there luminance signal input
in the pin(26) of IC201?
FLOW CHART NO.21 VIDEO INPUT TROUBLESHOOTING
Video insertion is impossible
(however, REC is possible).
NO
YES
YES
NO
When an image is recorded, it is overwritten on the existing image
(the image of insertion section is not cleared).
Is "H" level obtained also
when the Q673 base is in
video insertion state?
Check the line from SC301 to
P671.
In video insertion mode
Is there 10MHz oscillation
signal between pins(1) and
(2) of P671? (approx. 9Vp-p)
Check the peripheral circuit
of FL671, Q671 and Q672.
Check the line between the
pin(19) of IC701 and the Q673
base.
Click on the first or last page to see other VC-ME80HM service manuals if exist.