MODEL12 Test Flow Chart
yes
no
no
yes
yes
no
yes
no
yes
no
yes
no
yes
no
yes
no
no
yes
yes
no
說明
:
以上推斷是在操作接線正確
,
測試
方法正確
,
儀器設備正常的前提下進行的
.
Start
Dc voltage check
±Vcc,±15V
OK
Check transformer
C
168,
C
169
,D
123
,
D
124,
C
170
Power on check
LED red &green
OK
Check vol module
& connector
cable& ±15V.etc
Check THD output
power, noise
OK
Check pre board
& power board ,
±Vcc,±15V ect
Test frequency
Response
OK
Check U
102
,uR
133
,
C
121,
R
135
,C
122
.ect
Test input sensitivity
OK
Check U
101
,R
117,
R
112,
R
114
etc
Test protection
OK
Check U
107
.R
237
±15Vcc etc
Test limiter circuit
OK
Check U
106
.Q
107
ect
Auto off Function
Hi pot test
OK
Check U
103
.Q
101.
Q
102
.C
131.
R
142
;Ac
cord, Transformer.
OK
Listening test
OK
The Amp ass’y ok
END
Test phase sw,low
pass sw rabos vr
Check sw103,102,
R158,163,177 ect
M odel T w elve
Cascade
11
Summary of Contents for CASCADE TWELVE
Page 5: ...4 Model Twelve Cascade...
Page 9: ...Model Twelve Cascade 8...
Page 11: ...BLOCK DIAGRAM Model Twelve Cascade 10...
Page 19: ...Model Twelve Cascade 18...
Page 20: ...Model Twelve Cascade 19...
Page 21: ...Model Twelve Cascade 20...
Page 22: ...Cascade...
Page 23: ...Model Twelve Cascade 22...
Page 24: ...Model Twelve Cascade 23...
Page 25: ...Model Twelve Cascade 24...
Page 26: ...Model Twelve Cascade 25...
Page 27: ...Model Twelve Cascade 26...
Page 28: ...Model Twelve Cascade 27...
Page 29: ...Model Twelve Cascade 28...
Page 30: ...Model Twelve Cascade 29...
Page 31: ...Model Twelve Cascade 30...
Page 32: ...Model Twelve Cascade 31...
Page 33: ...Model Twelve Cascade 32...
