Pioneer TS4 Service Manual page 49

[Channel Decoder section]
((D))
↓
<M1001(TUNER MODULE) "+5V(1st_RF AMP)":5V?>
↓
YES
<M1001(TUNER MODULE) "+5V(SYNTH)"/
"+5V(OTHER)":5V?>
↓
YES
<M1001(TUNER MODULE) "+3.3V":3.3V?>
↓
YES
<M1001(TUNER MODULE) "+30V":30V?>
↓
YES
<M1001(TUNER MODULE) "SCL(QPSK)":correct?>
↓
YES
<M1001(TUNER MODULE) "SDA(QPSK)":correct?>
↓
YES
[Connect the PC and setup "main.exe"environment.]
↓
↓
[LNB Power check routine]
↓
[In the "main.exe" Window,
push F5 key.]
↓
[Examine M1001(LNB
POWER(RF INPUT)).]
↓
NO
<13V(12.5V~14V) or
18V(17V~19V) ?>
YES
<13V and 18V are switched
correctly ?>
↓
YES
[Examine 22kHz(HighBand/
LowBand switching signal.]
↓
NO
<Correctly overlayed onto 13V
or 18V?>
↓
YES
[Execute any "Set parameter"
operation.]
(In the "main.exe" Window,
push F1 key then F9 key.)
↓
<Execute "No.7 Tuner Check"
operation.>
↓
OK
[Examine around the
IC2001(OMEGA:STi5510A).]
(From page 48)
<LNB_POW0 at Q1011 Base: High?>
↓
<IC1002(NJM317DL1 Voltage Regulator)
output :13V or 18V?>
↓
YES
[Replace Q1012 or Q1009]
NO
<A+22V or 17V input available?>
↓
YES
<LNB_POW1 at Q1013 Base : High?>
↓
YES
[Replace Q1010 or Q1013]
<22kHz vailable at M1001(D22)?>
↓
YES
[Replace Q1008]
NG
[REPLACE M1001 (BXF1108 TUNER MODULE)]
NO
[Trace "A+5V" line.]
NO
[Trace "D+5.5V" line.]
NO
[Trace "D+3.3V" line.]
NO
[Trace "A+30V" line.]
NO
[Enter IIC check]
NO
[Enter IIC check]
NO
((G)) (See Page 44)
NO
<IC1002(NJM317DL1 Voltage
Regulator) Pin 3(VIN) :available?>
[IC1002(NJM317DL1 Voltage
Regulator) Pin 2(VOUT) and Pin 1
(ADJ)]
<IC1002: Voltage difference(Vout-
Vadj): 1.25V?>
[Replace IC1002]
NO
[Replace the Power Supply Ass'y]
NO
((G)) (See page 44)
NO
[Replace M1001]
((B)) (See page 47)
((B)) (See page 47)
NO
((A)) (See Page 46)
↓
YES
[RF incoming signal is faulty.]
(Antenna line seems to has a
NO
short path to the ground.)
<Over-current sensing: OK?>
↓
(Around Q1006/Q1007)
YES
[Add solder to R1014/R1015/
R1016/R1017/R1018.]
TS4
↑
NO
↓
YES
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