29UF200
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), (22)
Check TV sound.Check TU200,
of IC300?
Q455, IC400 and NO COLOUR
NoYestheir peripherals.
Change the sound system.Set S-Volume at
Is sound normal?Check IC400 maximum.Set colour YesTurn on colour control. Does
peripheral control.colour appear?
Do pins (12), (15)
NoYesparts.
of IC300 work?No
Is there audio NoYesTurn on colour system forced Fix cotrol to
Yes
signal at pins coloured switch. Does colour appear?
(46), (48) of system.
IC400?Check IC300.No
18NoYesIs chroma input level of IC800
pin (43) proper?
YesNo
Check TU200
and its Check IC301 and Is there audio
Is SCP signal waveform at pin (30) of Check Q400
Check peripheral their peripheral signal at pin (2)
NoIC800 proper?
TU200 circuits of no circuit. and (5) of IC1300?and their
peripheral problem, set YesNoperipherals.
PAL,
parts.the sound Yes
NTSC4.43:
system Are signal waveforms at TP801
Check X800, pin
inpositon.Noand TP802 proper?
Check IC1300, and(12) of IC800 and
Yes
their peripheraltheir peripherals.
parts.
Check IC400
and its
peripheral Check D1664
Check IC800 and
circuit.Check IC850.and its
their peripherals.
peripherals.
18-118-2 |
ACEC
