FLOW CHART NO.20 PLAYBACK MODE TROUBLESHOOTING
Playback picture does not appear (E-E mode is possible).
NO
YES
Is there FM signal (approx. 0.4Vp-p) input to
the pin (78) of IC201?
YES
Check line between pins (79) and (78) of
IC201.
YES
NO
Is there luminance signal (approx. 0.25Vp-p)
input and output in the pins (13), (14) and
(17) of IC201?
Check peripheral circuit of pins (13), (14) and
(17) of IC201.
YES
NO
Is there luminance signal (approx. 0.5Vp-p)
inputted to pin (19) of IC201?
Check line between pins (18) and (19) of
IC201 (C206).
YES
NO
Is there luminance signal (approx. 0.3Vp-p)
inputted to pin (42) of IC201?
Check line between pins (21) and (42) of
IC201 (C208).
YES
NO
Is there luminance signal (approx. 0.5Vp-p)
inputted to pin (26) of IC201?
YES
NO
Is there luminance signal (approx. 0.5Vp-p)
inputted to pin (23) of IC201?
Check line between pins (39) and (26) of
IC201 (C212).
Is there FM signal (approx. 0.4Vp-p)
output from the pin (79) of IC201?
NO
Is the supply V-H.SW.P signal fed to pin
(81) of IC201?
NO
Check V-H.SW.P line.
YES
Is there luminance signal (approx. 0.5Vp-p)
output from the pin (39) of IC201?
NO
Although picture playback is possible, colour does not appear
in PAL or NTSC mode (E-E mode is possible).
NO
YES
Is voltage 5V applied to the chroma power
terminal at pin (61) of IC201?
YES
Check peripheral circuit of pins (61) of IC201
and Y/C 5V line.
NO
Is there chroma signal (approx.
156mVp-p <PAL mode> or
298mVp-p<NTSC mode> /burst)
input in the pin (46) of IC201?
YES
NO
Is there chroma signal (approx.
197mVp-p <PAL mode> or
375mVp-p<NTSC mode>/ burst)
input to the pin (58) of IC201?
Check line between pins (58) and (35) of
IC201 (R505, C515).
NO
NO
YES
Is there chroma signal (approx.
300mVp-p <PAL mode> or
286mVp-p<NTSC mode>/burst)
input to the pin (54) of IC201?
Replace IC201.
Is there chroma signal output from pin (55)
of IC201?
YES
Check line between pins (55) and (54) of
IC201 (C514).
Check line between pins (60) and (46) of
IC201 (C512).
YES
For PAL/MESECAM mode.
Check whether the pins(73) and (75) of
IC201 oscillate 4.43MHz.
For NTSC mode.
Check whether the pins(73) and (71) of
IC201 oscillate 3.58NHz.
NO
For PAL/MESECAM mode.
Check parts arround of X501.
For NTSC mode.
Check parts arround of X502.
Is there chroma signal (approx.
197mVp-p <PAL mode> or
375mVp-p<NTSC mode>/ burst)
input in the pin (35) of IC201?
NO
YES
Is voltage 5V applied to the CCD section power terminal at pin (36) of IC201?
Check line between pins (24) and (23) of IC201 (C210).
NO
Is there video signal (approx. 2.0Vp-p)
outputted from pin (52) of IC201?
Replace IC201.
Is CCD control voltage approx. 5V normally to the pin (37) from pin (57) of IC201?
Is clock signal (approx. 8.86MHz<PAL mode> or 7.16MHz<NTSC mode>/0.5Vp-p) for CCD applied normally to the pin (44) from (69) of IC201?
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