29A-SX1
29A-SX5
29A-SX8
NoNo
Check D1603 and its peripherals.
No
Check Q402, IC5400, and their peripherals.
YesYesYesNo
Fix control to coloured system.
Turn on colour system forced switch. Does colour appear?Is chroma input level pin (13) of IC801 proper? Ref. value: 100 ~ 500mVp-p.Is SCP signal waveform at pin (2) of IC801 proper?Is FBP signal waveform at pin (25) of IC801 proper?Check IC801.Fix control to coloured system.
Yes
No
Check IC801.Check IC801 and its peripherals.PAL, SECAM, NTSC4.43: Check X800 pin (8) of IC801 and their peripherals.
D
YesNoNo
Colour control circuit detective. Colour saturation control does not work.Turn up and down colour control. Does colour gain go up and down?Can the sub-colour be readjusted in service mode?SET Sub- colour.NTSC3.58: Check X801 pin (10) of IC801 and their peripherals.
COLOUR PRODUCED
NoYes
White balance: Check RGB output circuit of IC801.Check IC801.
Yes
TROUBLE SHOOTING TABLE (Continued)Colour in B/W mode.YesYesNoAre signal waveforms at TP901 and TP902 proper?
Turn colour control to minimum. Does colour disappear?APG circuit: Check IC801 and its peripherals.Are waveforms at pins (51) and (52) of IC801 proper?
Check IC800, IC802, IC803 and their peripherals.
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