29B-FG5 29B-FX5
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
Check IC400
Is sound normal?maximum.Set colour YesTurn on colour control. Does
and its
control.colour appear?
NoYesperipheral Do pins (12), (15)
parts.of IC300 work?No
Is there audio NoYesYesTurn on colour system forced Fix control to
signal at pins switch. Does colour appear?coloured
(46), (48) of system.
No
IC400?Check IC300.
NoYesIs chroma input level of IC800
20pin (43) proper?
YesNo
Check TU200
and its Check IC301 and Is there audio
Check peripheral its peripheral signal at pin (2) Is SCP signal waveform at pin (30) of Check Q400
TU200 circuits of no circuit. and (5) of IC1300?NoIC800 proper?and its
peripheral problem, set YesNoperipherals.
PAL, SECAM,
parts.the sound Yes
system Are signal waveforms at TP801 NTSC4.43:
Check X800, pin
inpositon.Noand TP802 proper?
(model Check IC1300, and(12) of IC800 and
SX68KF7)its peripheraltheir peripherals.Yes
Check IGRparts.
unit peripheral Check IC400
circuit.and its
peripheral Check D1664
Check IC800 and
circuit.Check IC850.and its
their peripherals.
peripherals.
20-120-2 |
ACEC
SHARP
