Sharp VC-A582U

46
VC-A582U
VC-A582U(A)
VC-H982U
Picture (luminance) record is impossible (E-E mode is possible). Although picture record is possible, color does not appear (E-E mode is possible).
NO NO NO NO NO
NO
NO
NO NO NO NO
Is luminance signal (approx. 0.5 Vp-p) input to the IC201 pin 19? Is luminance signal (approx. 0.3 Vp-p) input to the IC201 pin 42? Is luminance signal (approx. 0.5 Vp-p) input to the IC201 pin 26?
Is luminance signal (approx. 0.5 Vp-p) input to the IC201 pin 39?
Is luminance signal (approx. 0.5 Vp-p) input to the IC201 pin 23?
YES YES YES YES YES
YES
YES
YES YES
YES YES
YES
YES
Is the luminance signal (approx. 0.5 Vp-p) input and output to the IC201 pins 13 and 14, respectively?
Check between the IC201 pin 18 and pin 19. (Check C206.) Check between the IC201 pin 21 and pin 42. (Check C208.)
Check between the IC201 pin 60 and pin 46. (Check C512.) Check between the IC201 pin 58 and pin 35. (Check R505, C512.)
Check between the IC201 pin 39 and pin 26. (Check C212.) Check between the IC201 pin 24 and pin 23. (Check C210.)
Is voltage 5V applied to the CCD section power terminal IC201 pin 36?
Is CCD control voltage approx. 5V applied normally to the pin 37 from the IC201 pin 57? Is clock signal (approx. 7.16 MHz/0.5 Vp-p) for CCD applied normally to the pin 44 from the IC201 pin 69?
Check the IC201 pins 13 and 14 peripheral circuit. (R201, R202, C203)
SP mode: Is record FM signal (approx.20 mAp-p) output to the IC201 pins 88 and 89 (SP1) and pins 86 and 87 (SP2)? EP mode: Is record FM signal (approx.20 mAp-p) output to the IC201 pins 93 and 94 (EP1) and pins 92 and 91 (EP2)?
Check or replace the cylinder. Is PRE/REC Vcc 5V applied to the IC201 pin 90?
Is voltage 5V applied to the chroma power terminal IC201 pin 61?
Is chroma signal (approx. 143 mVp-p/Burst) input into the IC201 pin 46? Is chroma signal (approx. 180 mVp-p/Burst) input into the IC201 pin 58?
Check the periphery of IC201 pin 61 and PC 5V line. Check whether the IC201 pins 71 and 73 oscillate (3.58 MHz)? Is chroma signal (approx. 180 mVp-p/Burst) output to the IC201 pin 35?
FLOW CHART NO.19 FLOW CHART NO.20