Pioneer TS7 Service Manual page 60

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[Analog Video Section]
((E)) (from page 57)
[The CVBS(PAL/SECAM) output is faulty.]
↓
[Examine IC4001(CXA2161R: A/V Switch) CVBS input]
(C4049*/IC4001 : Pin 54 : CVBS]
*See bottom side
↓
<Composite video signal : correct?>
↓
OK
[Examine IC4001(CXA2161R: A/V Switch) CVBS output]
(IC4001: Pin43: TV CVBS_OUT, IC4001: Pin39: VCR_CVBS_OUT)
<How is the result?>
↓ OK
[Around Analog video portion is faulty.]
[The Y/C output is faulty.]
↓
[Examine IC4001(CXA2161R: A/V Switch) Y(CVBS)/C input]
(C4047*/IC4001 : Pin 55 : Y, C4048*/IC4001 : Pin 53 : C]
*See bottom side
↓
<How is the result?>
↓
OK
[Examine IC4001(CXA2161R: A/V Switch) Y/C output]
(IC4001: Pin39: Y_OUT, IC4001: Pin41: C_OUT)
<How is the result?>
↓ OK
[Around Analog video portion is faulty.]
[The RGB output is faulty.]
↓
[Examine IC4001(CXA2161R: A/V Switch) RGB input]
(IC4001 : Pin 52 : R, IC4001 : Pin 51 : G, IC4001 : Pin 50 : B)
↓
<Are they OK?>
YES
[Examine IC4001(CXA2161R: A/V Switch) RGB output]
(IC4001: Pin45: R, IC4001: Pin46: G, IC4001: Pin47: B)
<How is the result?>
↓ OK
[Around Analog video portion is faulty.]
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TS7, BCT-1710, BCT-1720, BCT-1730
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http://www.xiaoyu163.com
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NG
[Replace MAIN ASSY.]
NG
[Replace IC4001.]
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[Replace MAIN ASSY.]
NG
[Replace IC4001.]
NG
[Replace MAIN ASSY.]
NG
[Replace IC4001.]
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