Pioneer PRA-BD11 Service Manual page 54

1
Symptom
In Test mode
A
• LEDs 1-6 are all unlit.
• LED 1 blinks twice in succession, LED 2 is lit,
and LEDs 3-6 are unlit.
B
• LED 1 and LEDs 3-6 are unlit, and LED 2 is lit.
C
• LED 1 blinks (repeatedly on and off for 1
second), LED 2 is lit, and LEDs 3-6 are unlit.
• LED 1 blinks (repeatedly on and off for 1 second),
LED 2 is lit, and LEDs 3-4
D
succession, and LEDs 5-6 are unlit.
• LED 1 blinks (repeatedly on and off for 1 second),
LEDs 2 and 4 are lit, and LEDs 3 and 5
twice in succession, and LED 6 is unlit.
E
• LED 1 blinks (repeatedly on and off for 1second),
LEDs 2-5 are lit, and LED 6
succession.
F
54
1
2
LED Indication
blink twice in
blink
blinks twice in
2
3
• Check soldering at IC8610 (PE9017).
• Check soldering at IC8611 (XC2S50-5PQ208C).
• Check soldering at IC8612 (TC74VHC541FT, Side B).
• Check if D8612 to D8617 (SML-310PT, LEDs 1-6) are correctly
mounted.
The PRA-BD12 operates in Normal mode:
• Check soldering at Pin 178 of IC8611 (XC2S50-5PQ208C).
• Check soldering at IC8610 (PE9017).
• Check soldering at IC8611 (XC2S50-5PQ208C).
• Check if a clock waveform signal from the 18.432-MHz clock
can be observed at TP8640 (soldered part) or TP8609 (checker
chip).
• Check soldering at IC8616 (TC74LCX32FT, Side B).
• Check soldering at X8602 (VSS1194, crystal, Side B).
• Check soldering at Pins 80, 178, and 182 of IC8611
(XC2S50-5PQ208C).
• Check if a clock waveform signal from the 27-MHz clock can be
observed at TP 8635 (soldered part) or TP8608 (checker chip).
• Check soldering at IC8609 (TC74LCX541FT, Side B).
• Check soldering at IC8606 (BU2288FV, Side B).
• Check soldering at X8601 (VSS1146, crystal).
• Check soldering at Pins 20-43 of IC8611 (XC2S50-5PQ208C).
• Check soldering at IC8614 (AK4103AVF).
• Check soldering at Pins 44-112 and 123-136 of IC8611
(XC2S50-5PQ208C).
• Check soldering at IC8613 (GS9023A).
• Check if a clock waveform signal from the 36.864-MHz clock can
be observed at TP8638 (soldered part) or TP8607 (checker chip).
• Check soldering at IC8605 (TC74LCX32FT, Side B).
• Check soldering at IC8609 (TC74LCX541FT, Side B).
• Check soldering at IC8606 (BU2288FV, Side B).
• Check soldering at Pins 113-122 of IC8611 (XC2S50-5PQ208C).
• Check soldering at IC8617 (GS7032).
• Check soldering at IC8609 (TC74LCX541FT, Side B).
PRA-BD11
3
4
Check / Measures
4