Pioneer TS7 Service Manual page 61

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QQ
3 7 63 1515 0
[Check the Power supplied properly.]
[Examine IC4004(CS4334 D/A converter) input]
<How is the result?>
[Examine IC4004(CS4334 D/A converter) output]
[Examine IC4003(NJM4558 OP Amplifier) output]
<How is the result?>
[Examine IC4001(CXA2161R A/V Switch) Audio outputs.]
[Select where to go from below.]
TE
L 13942296513
Audio output terminals which are NG
TV-SCART & VCR-SCART & CINCI
<Q4015 corrector : –3.3V?>
[Add solder to the CN4002.]
www
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http://www.xiaoyu163.com
[Analog Audio Section]
((F)) (from page 57)
↓
(IC4004 : Pin 1 : SDATA)
↓
NO
OK
(IC4004 : Pin 8 : L, IC4004 : Pin 5 : R)
↓
NO
<Are they OK?>
YES
(IC4003 : Pin 1 : L, IC4003 : Pin 7 : R]
↓
NG
OK
↓
↓
TV-SCART & VCR-SCART
TV-SCART & CINCI
TV-SCART
VCR-SCART
CINCI
Others
↓
<How is the result?>
OK
(POWER_MUTE)
YES
x ao
y
i
TS7, BCT-1710, BCT-1720, BCT-1730
http://www.xiaoyu163.com
2
8
[Trace the line going up to OMEGA: STi5512]
[Replace IC4002.]
[Replace IC4003.]
Q Q
3 6 7 1 3
Pin 25: TV_L Pin 26: TV_R Pin 27:VCR_L
→
_ _
→
_ _
→
_ _
→
_
_
→
→
→
_ _
NG
[Replace IC4001.]
NO
[Examine around the Muting transistors]
(Q4001/Q4002/Q4009/Q4010/Q4015)
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2
3
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
Examine ; IC4001
Pin 28:VCR_R Pin 30:RCA_L
_ _ _
_ _
_
_ _
_
_ _ _
m
co
3
4
9 9
A
B
C
2 8 9 9
Pin 31:RCA_R
_
_
_
_ D
E
F
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