Pioneer Elite SC-71, Руководство по обслуживанию

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SC-71
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AUDIO_SS ASSY DIAGNOSIS

No s ound only in BT ( S ingle channel - Check only the s ignal path of the relevant channel. Plural channel s -
There may be trouble s with power s ource, control s ignal s : MUTE, DET and other s . Bad connection of cable s
and connector s s hould be al s o con s idered.)
No sound in a nother BT unit Rep a ir or repl a ce BT unit.
In Auto S urr, the sign a ls of the relev a nt ch a nnel (BT L, BT R) exist
in AUDIO_ SS A SS Y .
Check the p a th of the relev a nt ch a nnel
in BT_ SS A SS Y.
Check the p a th of the relev a nt sign a l in AUDIO_ SS A SS Y.

No s ound only in Tuner (There may be trouble s with power s ource of circuit and control s ignal s .
Bad connection of cable s and connector s s hould be al s o con s idered.)
Check the p a th of the relev a nt ch a nnel in AUDIO_ SS A SS Y, a nd check TUNER MODULE.
Yes
Yes
No
No

No s ound in plural input mode s of s peaker and preout
No sound in plur a l ch a nnels
Check the broken point (st a rt with checking the
relev a nt ch a nnel of CN5501)
Check of power source: Is there ±12V in JP 3 001? Check the circuit of the connection destin a tion.
7V a nd -7V a re output from Q 3 001 a nd 3 002. Check the circuit.
MUTE sign a l of the relev a nt ch a nnel of CN2 8 61 is "L".
Check the circuit of the connection destin a tion.
When CN2 8 61 volume is ch a nged, the sign a l is
tr a nsmitted to 12, 1 3 pin.
Check the circuit of the connection destin a tion.
Check the broken point (st a rt with checking the relev a nt
ch a nnel of CN5501), a nd check the peripher a l circuit.

No s ound only in analog input
Check the p a th from e a ch input termin a l to IC2501.
Check the p a th from 3 4, 3 5pin of IC2501.

No s ound only from HEADPHONE S
Check the peripher a l of IC2 8 01.

No s ound only from ZONE 2

No s ound only from ZONE 2 of FRONT U S B
Check the p a th from 1, 3 pin of CN5501 to IC2501.

No s ound only in BT
Check 1, 3 pin of CN550 3 , power source a nd control sign a ls.

No s ound only in Tuner
The sign a l is tr a nsmitted to 7, 9pin when CN 3 902 is in
reception st a te.
Check or rep a lce TUNER MODULE.
5V is output from Q 3 901. Check the circuit.
When the frequency of the tuner of CN 3 902 is ch a nged, the
sign a l is tr a nsmitted to 1,2, 3 , 4pin.
Check the sign a l p a th between
CN 3 902 a nd CN2 8 61.
Check the sign a l p a th form CN 3 902 to IC2501.
No
No
No
No
No
Yes
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes