Service manual

48
DV-NC55U/C/M
FLOW CHART NO.16
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) input to the pin(78) of IC1201?
Is the luminance signal (approx. 0.25 Vp-p) input and output to the pins(13), (14) and (16) of IC1201, respectively?
Is luminance signal (approx. 0.5 Vp-p) input to the pin(19) of IC1201? Is luminance signal (approx. 0.3 Vp-p) input to the pin(42) of IC1201?
Is luminance signal (approx. 0.5 Vp-p) input to the pin(26) of IC1201?
Is luminance signal (approx. 0.5 Vp-p) input to the pin(23) of IC1201?
Replace IC1201.
Check between the pins(79) and (78) of IC1201.
Is luminance signal (approx. 0.4 Vp-p) input to the pin(79) of IC1201?
Is V-H.SW.P. applied to the pin (81) of IC1201?
Check V-H.SW.P. line.
Check the periphery of pins(13), (14) and (16) of IC1201. (Check C1203, R1201-2, L1201, C1205, R1203.)
Check between the pin(18) and pin(19) of IC1201. (Check C1206.)
Check between the pin(21) and pin(42) of IC1201. (Check C1208.)
Check between the pin(39) and pin(26) of IC1201. (Check C1212.)
Is luminance signal (approx. 0.5 Vp-p) input to the pin(39) of IC1201?
Is voltage 5V applied to the CCD section power terminal pin(36) of IC1201?
Is control voltage approx. 5V applied normally to the pin(37) from the pin(57) of IC1201? Is CCD clock signal (approx. 7.16 MHz/0.5 Vp-p) applied to the pin(44) from the pin(69) of IC1201?
Check between the pins(24) and (23) of IC1201. (Check C1210.)
Replace IC1201.
Check between the pin(55) and pin(54) of IC1201. (Check C1514.)
Is chroma signal (approx. 286 mVp-p/Burst) input into the pin (54) of IC1201?
Is chroma signal (approx. 508 mVp-p/Burst) input into the pin (58) of IC1201?
Check between the pin(58) and pin(35) of IC1201. (Check R1505, C1515.)
Is chroma signal (approx. 508 mVp-p/Burst) output to the pin (35) of IC1201?
Check whether the pin(71) and pin (73) of IC1201 oscillate (3.58 MHz)?
Check between the pin(60) and pin(46) of IC1201. (Check C1512.)
Check the periphery of pin(61) of IC1201 and YC 5V line.
Is voltage 5V applied to the chroma power terminal pin(61) of IC1201?
Is chroma signal (approx. 403 mVp-p/Burst) input into the pin (46) of IC1201?
Playback picture does not appear (E-E mode is possible). Although picture is played back, color does not appear (E-E mode is possible).