Read Sharp DV-NC55 (serv.man10) Service Manual online
50
DV-NC55S/H
DV-NC60H
DV-NC60H
FLOW CHART NO.15
NO
YES
YES
YES
NO
YES
YES
NO
YES
YES
YES
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
YES
NO
NO
Is luminance signal (approx. 0.5
Vp-p) input to the pin(19) of IC201?
Is luminance signal (approx. 0.3
Vp-p) input to the pin(42) of IC201?
Is luminance signal (approx. 0.5
Vp-p) input to the pin(26) of IC201?
Is luminance signal (approx. 0.5
Vp-p) input to the pin(23) of IC201?
Is the luminance signal (approx. 0.5
Vp-p) input and output to the pins(13)
and (14) of IC201, respectively?
SP mode: Is record FM signal (approx. 20 mp-p) output to the pins(88) and (89) (SP1) and pins(86) and (87) (SP2) of IC201?
LP mode: Is record FM signal (approx. 20 mp-p) output to the pins(93) and (94) (LP1) and pins(92) and (91) (LP2) of IC201?
Check or replace the cylinder.
Check the pins(13) and (14) of
IC201 peripheral circuit.
(R201, R202, C203, C225)
Is PRE/REC Vcc 5V applied to the pin(90) of IC201?
NO
Replace IC201.
Is chroma signal (approx. 197 mVp-p
/Burst) output to the pin(35) of
IC201?
Check between the pins(58) and
(35) of IC201.
Check whether the pins(75) and
(73) of IC201 oscillate (4.43 MHz)?
Check between the pins(60) and
(46) of IC201. (Check C512.)
Is chroma signal (approx. 156 mVp-p
/Burst) input into the pin(46) of
IC201?
Is chroma signal (approx. 197 mVp-p
/Burst) input into the pin(58) of
IC201?
SP mode: Is there chroma ingredient included signal (approx. 20 mVp-p)
output at pins (88), (89) ((SP1)) and pins (86), (87) ((SP2)) of IC201?
LP mode: Is there chroma ingredient included signal (approx. 20 mVp-p)
output at pins (93), (94) ((EP1)) and pins (92), (91) ((EP2)) of IC201?
Check between the pins(21) and
(42) of IC201. (Check C208.)
Check between the pins(39) and
(26) of IC201. (Check C212.)
Is luminance signal (approx. 0.5
Vp-p) input to the pin(39) of IC201?
Is voltage 5V applied to the CCD section
power terminal pin(36) of IC201?
Is CCD control voltage approx. 0V
applied normally to the pin(37)
from the pin(57) of IC201?
Is clock signal (approx. 8.86 MHz/
0.5 Vp-p) for CCD applied normally
to the pin(44) from the pin(69) of
IC201?
Is voltage 5V applied to the chroma
power terminal pin(61) of IC201?
Check the periphery of pin(61) of
IC201 and PC 5V line.
Check between the pins(18) and
(19) of IC201.
Check between the pins(24) and
(23) of IC201. (Check C210.)
Picture (luminance) record is impossible (E-E mode is possible).
Although picture record is possible, color does not appear (E-E mode is possible).
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