VC-M305HM (serv.man9). Electrical troubleshooting guide - Sharp VCR Service Manual (repair manual). Page 9

Check line between pins(79) and (78) of IC201.

Is there luminance signal (approx. 200mVp-p)

Check V-H.SW.P. line.

Is the supply V-H. SW.P. signal fed to pin 
(81) of IC201?.

Is there luminance signal input output 
at pins (13) and (14) of IC201?.

Is there luminance signal (approx. 0.5Vp-p)
input output at pin (19) of IC201?.

Is there luminance signal (approx. 0.3Vp-p)
input output at pins (42) of IC201?.

Is there luminance signal (approx. 0.5Vp-p)
input output at pins (26) of IC201?.

Check peripheral circuit of pins (13) and (14) 
of IC201?.

Check line between pins (18) and (19) 
of IC201. 

Check line between pins (21) and (42) 
of IC201. (C208)

Check line between pins (39) and (26) 
of IC201. (C212)

Is there luminance signal (approx. 0.5Vp-p)
input output at pin (39) of IC201?.

Is there luminance signal (approx. 0.5Vp-p)
inputted at pins (23) of IC201?.

Is voltage 5V applied to the CCD section power terminal at pin (36) of IC201?.

Is voltage of 5V applied to the chroma power
terminal pin(61) of IC201?

Is there chroma signal (approx. 156mVp-p/
burst) inputted at pin (46) of IC201?.

Is there chroma signal (approx. 197mVp-p/
bust) inputted at pin (58) of IC201?.

Is there luminance signal (approx. 0.5Vp-p)
outputted at pins (52) of IC201?.

Check line between circuit of pins (24)and(23) 
of IC201. (C210).

See FLOW CHART NO.18 E-E MODE TROUBLESHOOTING..

Replace IC201.

Check peripherial circuit pin (61) of IC201 and
PC 5V line

Check line between pin (60)and pin (46)
 of IC201.(C512).

Check whether the pins (73) and (75)of IC201
oscillate 4.43MHz at PAL/SECAM mode.

Check parts around of X502.

Check line between circuit of pins (58)and 
(35) of IC201.

Is there chroma signal (approx. 197mVp-p/
burst) outputted at pin (35) of IC201?.

Is there chroma signal (approx. 300mVp-p) 
outputted at pin (55) of IC201?.

Is there chroma signal (approx. 300mVp-p/
bust) inputted at pin (54) of IC201?.

Check line between circuit of pins (55)and 
(54) of IC201.

Replace IC201

Is CCD control voltage approx. 5V applied normally to the pin (37) from pin (57) of IC201?
Is clock signal (approx. 8.86MHz/0.5Vp-p) for CCD applied normally to the pin (44) from (69) of IC201?

Is there FM signal (approx. 200mVp-p)
inputted at pin(78) of IC201?

outputted at pin(78) of IC201?