29WV30
Trouble shooting table (Continued)Trouble shooting table (Continued)
NO NORMAL SOUNDNO SPECIFIC COLOUR
Is audio output terminal J400
Nonormal ?YesIs only RF signal's colour abnormal?
YesNo
C
Is there audio signal at pins (3) and (22)
Check TV sound.Check TU200,
of IC300?
NO COLOUR
Q455, IC400 and
NoYestheir peripherals.
Change the sound system.Set S-Volume at
Check IC400
Is sound normal?maximum.Set the colour YesTurn on colour control. Does
and its control.colour appear?
NoYesperipheral Do pins (12), (15)
parts.of IC300 work?No
16
Is there audio NoYesYesTurn on colour system forced Fix cotrol to
signal at pins switch. Does colour appear?coloured
(46) and (48) system.
No
of IC400?Check IC300.
NoYesIs chroma input level at pin (43)
of IC800 proper?
YesNo
Check TU200
and its Check IC301 and Is there audio
Is SCP signal waveform at pin (30) of
Check TU200peripheral its peripheral signal at pins (2) Check Q400
NoIC800 proper?
and its circuits of no circuit. and (5) of IC1300?and its
peripheral parts. problem, set YesNoperipheral circuit.
PAL, SECAM,
Check NICAMthe sound Yes
NTSC4.43:
unit and its system Are signal waveforms at TP801
Check X800, pin
peripheral inpositon.Noand TP802 proper?
(12) of IC800 and
circuit. Check IC1300 and
their peripheral circuit.Yes
its peripheral
parts.
Check IC400
and its
peripheral Check D1664
Check IC800 and
circuit.Check IC850.and its
its peripheral circuit.
peripheral circuit.
16-116-2 |
ACEC
