TSS-Sub4000 Testing Flow Chart
Start |
|
Dc voltage check |
|
±Vcc,±15V |
|
no | Check transformer |
| |
OK | C168,C169,D123, |
yes | D124,C170 |
|
yes
Test protection
no
OK
yes
Test limiter circuit
Check U107.R237 ±15Vcc ect
Power on check |
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LED red &blue |
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no | Check vol module | ||
| & connector | ||
OK |
| ||
cable& ±15V.ect | |||
yes | |||
|
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|
| ||
no
OK
yes
Check THD output power, noise
Check U106.Q107ect
Test frequency |
|
Response |
|
no | Check U102,R124, |
| |
OK | C104,R125,C117.ect |
no
OK
yes
Auto off Function Hi pot test
Check pre board
&power board , ±Vcc,±15V ect
| yes |
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Test phase sw,low |
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pass sw rabos vr |
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| no |
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Check sw103,102, |
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OK |
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R158,163,177 ect |
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| yes |
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Test input sensitivity |
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| no |
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Check U101,R117, |
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OK |
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R112,R114 ect |
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| 11 | |||
| no | Check U103.Q101. |
| Q102.C131.R142;Ac | |
OK |
| |
| cord, Transformer. | |
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| |
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yes
Listening test
no
OK
yes
The Amp ass’y ok
END
