Technics SU-7700 Service Manual

{Et] ooz¢ns
Ref. No. . Part No.
ERD25TJ474
ERD25TJ183
-ERGIANJS61
ERD25TJ123
ERD25TJ123
ERD25TJ121
ERD25TJ121
ERD25TJ122
ERD25TJ122
ERG2ANJ152
EWFOMAO24BF5
EVHGSAF25G25
EWF4XA063C 15
EWF3XA063C 15
ECEA50OV1
ECEASOM3R3
ECEASOM3R3
ECCD1H181K
ECCD1H181K
ECCD1H680K
ECCD1H680K
ECCD1H221K
ECCD1H221K
ECCD1H221K
ECCD1H221K
ECEA162Z22
ECEA16Z22
ECEA16V47
ECEA16V47
ECEASOZ3R3
ECEAS0Z3R3
ECKD1H391K
ECKD1H391K
ECQF 1472GZN
ECQF1472GZN
ECQF1183GZN
ECQF1183GZN
ECEASOM1R
ECEAS5S0OM1R
ECEA25V100V
ECEA16V330V
ECQM1H392KZ
ECQM1H392KZ
ECQM1H153KZ
ECQM1H153KZ
Carbon,
Carbon,
Metal Film
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Carbon,
Metal Film,
Electrolytic,
Electrolytic,
Electrolytic,
Ceramic,
Ceramic,
Ceramic,
Ceramic,
Ceramic,
Ceramic
Ceramic
Ceramic
Electrolytic,
Electrolytic,
Electrolytic,
Electrolytic,
Electrolytic,
Electrolytic,
Ceramic,
Ceramic,
Electrolytic,
Electrolytic,
Electrolytic,
Electrolytic,
Polyester,
Polyester,
Polyester,
Polyester,
ECEAROMTR
ECEASOM1R
ECCD1HO50K
ECCD1HOS50K
Electrolytic,
Electrolytic,
Ceramic,
Ceramic,
CAPACITORS
Polypropylene, 0.018uF,
Polypropylene, 0.018uF,
Part Name & Description
470k, 1/4W,
18kQ, 1/4W,
5600, 1W
12kQ),
12kQ, 1/4W,
1200, 1/4W,
1200, 1/4W,
1.2kQ, 1/4W,
1.2kQ, 1/4W,
1.5kQ),
VARIABLE RESISTORS
Volume Control, 250k (B)
Balance Control, 200k 9 (G)
Bass Control, 100k (C)
Treble Control, 100k (C)
1pF,
3.3 uF,
3.3 uF,
180pF,
180pF,
68pF,
68pF ,
220pF,
220pF,
220pF,
220pF,
22uF,
22uF,
47 pF,
47 uF,
3.3uF,
3.3uF,
390pF,
390pF,
1uF,
Tur,
100 uF
330uF ,
0.0039 uF ,
0.0039 uF ,
0.015uF,
0.015 uF,
(pr,
TuF,
5pF,
5pF,
50V
50V
50V
50V,
50V,
50V,
50V,
50V,
50V,
50V,
50V,
16V
16V
16V
16V
50V
50V
50V,
5O0V,
Be es ee Fe
H
Polypropylene, 0.0047uF, 125V ,
Polypropylene, 0.0047uF, 125V,
125V,
125V,
50V
50V
25V
16V
50V,
50V,
50V,
50V,
NOV
50V
50V,
50V,
5%
5%
5%
5%
5%
5%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+ 2%
20
+ 2%
+ 2%
+10%
+10%
+10%
+10%
+10%
+10%
a ee ee a ee
—_ —_—t —_d -~— >
Per
set}
C211
C212
C213
C214
C217
C218
C219
C220
C221
C222
C223
C225
C226
C227
C228
C251
C252
C253
C254
C255
C256
C257
C258
C259
C260
C261
C262
C265
C266
C267
C268
C269
C303
C351
C352
C353
C354
C401
C402
-ECKD2H103PE
oo.
“| ECEAS0Z3R3
ECEA16V33
ECEA16V33
ECEA25V100V
ECEA25V100V
ECCD1H101K
ECCD1H101K
ECCD1H101K
ECCD1H101K
ECQM1H473KZ
ECQM1H473KZ
ECEA35V47V
ECEAS50V220V
ECEAS50V220V
ECKD1H331K
ECKD1H331K
ECQM1H222KZ
ECQM1H222KZ
ECQM1H333KZ
ECQM1H333KZ
ECQM1H154KZ
ECQM1H154KZ
ECQM1H822KZ
ECQM1H822KZ
ECQM1H393KZ
ECQM1H393KZ
ECEA16V33
ECEA16V33
ECEA10M47
ECEA10M47
ECKD1H103MD
ECKD1H103MD
ECKD2H103PE
ECEA6V220V
ECEAS50V 10
ECEA50V 10
ECEA50V 10
ECEA50V 10
ECET50R 103Y
ECET50R 103Y
Electrolytic, 33uF, 16V
Electrolytic, 33uF, 16V
Electrolytic, 100uF, 25V
Electrolytic, 100uF, 25V
Ceramic, 100pF, 50V,
Ceramic, 100pF, 50V,
Ceramic, 100pF, 50V,
Ceramic, 100pF, 50V,
Polyester, 0.047uF, SOV,
Polyester, 0.047uF, 5OV,
Part Name & Description
+10%
+10%
+10%
+10%
+10%
+10%
Per
Set
1
ee ee ee ee ee ee)
Electrolytic, 47pF, 35V
Electrolytic, 220uF, 50V
Electrolytic, 220uF, 50V
Electrolytic, 330pF, 50V,
Electrolytic, 330pF, 50V,
Polyester, 0.0022uF, 50V,
Polyester, 0.0022uF, 50V,
Polyester, 0.033uF, 5OV,
Polyester, 0.033uF, 50V,
Polyester, 0.15 uF, 50V,
Polyester, 0.15 pF, 50V,
Polyester, 0.0082uF, 5OV,
Polyester, 0.0082uF, 5O0V,
Polyester, 0.039uF, 50V,
Polyester, 0.039uF, 5O0V,
Electrolytic, 33yF, 16V
Electrolytic, 33yuF, 16V
Electrolytic, 4/7HF, 10V
Electrolytic, 47uF, 10V
Ceramic, O.01pF, SOV
Ceramic, O.0luF, SOV,
Ceramic, 0.014uF, 500V
Ceramic, 0.014F
ectrolytic, 3.3uF,
Electrolytic, 220uF,
Electrolytic, 10uF,
Electrolytic, 10uF,
Electrolytic, 10F,
Electrolytic, 10uF,
Electrolytic, 10000uF, SOV
Electrolytic, 10000uF, SOV
COMPONENT COMBINATION
PILOT LAMP
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+20%
+20%
Component Combination, 0.01uF (X2]}
ss od ot od oe ie eae

Technics SU-7700 Specifications

General

Damping factor	30
Input sensitivity	2.5mV (MM), 150mV (line)
Output	150mV (line)
Speaker load impedance	4Ω to 16Ω
Power output	50 W per channel into 8Ω (stereo)
Signal to noise ratio	95dB (line)
Channel separation	55dB (MM)