Read Sharp DV-NC65H (serv.man15) Service Manual online
57
DV-NC65H/S
DV-NC70H
DV-NC70H
FLOW CHART NO.21
NO
NO
YES
YES
YES
NO
NO
YES
YES
NO
NO
NO
YES
YES
YES
YES
NO
NO
NO
YES
NO
YES
NO
YES
YES
NO
YES
NO
YES
Is FM signal (approx. 0.4 Vp-p)
inputted to the pin(78) of IC201?
Is the luminance signal (approx.
0.25 Vp-p) inputted and outputted
to the pins(13), (14) and (16) of
IC201, respectively?
Is luminance signal (approx. 0.5 Vp-p)
inputted to the pin(19) of IC201?
Is luminance signal (approx. 0.3 Vp-p)
inputted to the pin(42) of IC201?
Is luminance signal (approx. 0.5 Vp-p)
inputted to the pin(26) of IC201?
Is luminance signal (approx. 0.5 Vp-p)
inputted to the pin(23) of IC201?
Replace IC201.
Check between the pins(78) and
(79) of IC201.
Is luminance signal (approx. 0.4 Vp-p)
inputted to the pin(79) of IC201?
Is V-H.SW.P. applied to the pin
(81) of IC201?
Check V-H.SW.P. line.
Check the periphery of pins(13), (14)
and (16) of IC201. (Check C203,
C205, R201~203, L201)
Check between the pin(18) and
pin(19) of IC201. (Check C206.)
Check between the pin(21) and
pin(42) of IC201. (Check C208.)
Check between the pin(26) and
pin(39) of IC201. (Check C212.)
Is luminance signal (approx. 0.5 Vp-p)
outputted from the pin(39) of IC201?
Is voltage 5V applied to the CCD section power terminal pin(36) of IC201?
Is control voltage approx. 5V applied normally to the pin(37) from the pin(57) of IC201?
Is CCD clock signal (approx. 7.16 MHz/0.5 Vp-p) applied to the pin(44) from the pin(69) of IC201?
Check between the pins(23) and (24) of IC201. (Check C210.)
Replace IC201.
Check between the pins(54) and
pin(55) of IC201. (Check C514.)
Is chroma signal (approx. 286
mVp-p/Burst) inputted into the
pin(54) of IC201?
Is chroma signal (approx. 508
mVp-p/Burst) inputted into the
pin(58) of IC201?
Check between the pin(35) and
pin(58) of IC201.
(Check C515.)
Is chroma signal (approx. 508
mVp-p/Burst) outputted from
the pin(35) of IC201?
Check whether the pin(71) and pin
(73) of IC201 oscillate (4.43 MHz)?
Check between the pin(46) and
pin(60) of IC201. (Check C512.)
Check the periphery of pin(61) of
IC201 and PC 5V line.
Is voltage 5V applied to the chroma
power terminal pin(61) of IC201?
Is chroma signal (approx. 403
mVp-p/Burst) inputted into the
pin(46) of IC201?
Playback picture does not appear (E-E mode is possible).
Although picture is played back, color does not appear (E-E mode is possible).
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