VC-S67
FLOW CHART NO.20 PLAYBACK MODE TROUBLESHOOTING
Although pivture playback is possible, colour does Playback appear Although picture playback is possible, colour does not not appear in SECAM (PAL mode is possible). appear in PAL or NTSC (E-E mode is possible).
there FM signal (approx. 0.4Vp-p) line between pins(79) and (78) Is voltage 5V applied to the chroma NO Check peripheral circuit of Put the unit in SECAM mode. SECAM position? input in the pin(78) IC201. (Q304, C315~8, L302~3) power terminal at pin(61) IC201? pins(61) of IC201 and PC5V line.
YES YES
NO Is colour mode switch at YES
NO YES NO 298mVp-p<NTSC mode>/burst) input in the pin(46) of IC201?
pin(79) of NO playback luminance Is there chroma signal (approx. Check line between pins(60) IC5301. inputted pin(21) IC5301? 0.4Vp-p) output in the pin(79) IC201? 156mVp-p<PAL mode> or and (46) of IC201 (C512).
Is the supply V-H.SW.P signal For PAL/SECAM mode. YES fed to pin(81) of IC201? (Q305) Check whether the pins(73) and Feed to the control shown in NO Is there playback chroma signal table each other pins IC5301. outputted in the pin(15) of IC5301? (75) of IC201 oscillate 4.43MHz. For NTSC mode.
YES
Check V-H.SW.P line. (71) of IC201 oscillate 3.58NHz. SECAM(H) pin(7) For PAL/SECAM mode. Check parts arround of X501. Check parts arround of X502.
EE(L) pin(6) Check whether the pins(73) and YES
Is there luminance signal (approx. Check peripheral circuit of pins(13), (14) NO NO 0.25Vp-p) input output in the (17) of IC201, and S-PICTURE pins(13), (14) and (17) of IC201? circuit (Q201, Q202, Q204, Q206). FV PULS pin(10)
C-SYNC pin(9)
YES For NTSC mode. 4.286MHz pin(4) YES 0.5Vp-p) input in the pin(19) IC201? and (19) of IC201 (C206). Is there chroma signal (approx.
NO Is there luminance signal (approx. Check line between pins(18)
44
In case of PAL or NTSC mode Check that the signal does not go In case of SECAM mode 286mVp-p<NTSC mode>/burst) input in the pin(35) of IC201? input in the pin(54) of IC201?
YES NO NO
Check peripheral circuit of
197mVp-p<PAL mode> or NO Check line between pins(58) YES and (35) of IC201 (C515).
375mVp-p<NTSC mode>/burst) input in the pin(58) of IC201?
YES YES
IC5301. through FL201 (3.58 MHz, B.P.F). YES
Is there chroma signal (approx. Check that signal goes through there chroma signal (approx. 197mVp-p<PAL mode> or Is the supply voltage of 5V fed FL201 (3.58 MHz, B.P.F). 300mVp-p<PAL mode> or 375mVp-p<NTSC mode>/burst) to pins(5) and (17) of IC5301?
Is there luminance signal (approx. Check line between pins(21) NO Replace IC5301. 0.3Vp-p) input in the pin(42) IC201? and (42) of IC201 (C208). and (54) of IC201 (C514).
YES
YES Check line between pins(55) the supply base bias voltage NO Is there playback chroma signal
NO Is there luminance signal (approx. Check line between pins(39)
fed to base outputted in the emitter of Q5302? Replace IC201. YES Check SECAM(H) line .
0.5Vp-p) input in the pin(26) IC201? and (26) of IC201 (C212). NO YES
Is there luminance signal (approx. 0.5Vp-p) output in the pin(39) of IC201?
NO Check the peripheral circuits of NO Is there chroma signal (approx. 300mVp-p
Is voltage 5V applied to the CCD section power terminal at pin(36) of IC201?
NO
pins(55) and (54) IC201. /ID area) inputted in the pin(55) of 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?
Is there luminance signal (approx. NO 0.5Vp-p) input in the pin(23) of IC201?
Check line between pins(24) and (23) of IC201 (C210).
YES
Replace IC201.
