Jvc JR S401 Service Manual

Page 2

JR~S401
No. 2452

Contens

Page
1. Specifications ........................................................ 2
2. Level Diagram ........................................................ 2
3. Removal Procedures
3-(1) Top Cover and Bottom Plates ....................................... 3
3-l2) Front Panel and Window Screen ..................................... 4
3-(3) Pushbuttons .................................................. 5
3-(4) TAP-273B Power Amp. P.C. Board Ass'y ................................ 5
4. Main Parts Location .................................................... 6
5. Exploded Views and Part Numbers
5-(1) Front Panel . . . . .' .............................................. 7
5-(2) Rear Panel ................ - .................................... 8
5-(3) Replacement of the Power Transistor .................................. 8
6. Dial Stringing Procedures ................................................. 9
7. FM/AM Tuner Alignment Procedures
7-(1) PM Section ................................................... 1o
7-(2) AM Section . . . . . ; ............................................. 12
8. Power Amplifier Adjustment Procedures
8-(1) Center Voltage ................................................. 13
8-(2) Idling Current ................................................. 13
8-(3) Power Meter .................................................. 13
9. Printed Circuit Board Ass'y and Parts List
9-(1) TFC-238 FM/AM Tuners and Equalizer Amp. P.C. Board Ass'y ................ 14
9-(2) TXX-114A Select Switch P.C. Board Assy .............................. 22
9-(3) TXX-11SB Speaker Terminal P.C. Board Ass'y ........................... 23
9-(4) TXX-11GB Pin-jack P.C. Board Ass'y .................................. 24
9-(5) TXX-117E (or F and TXX-130E (or F) AC Block P.C. Board Ass'y ........... 25
9-(6) TPS-118C (or D) DC Power Supply P.C. Board Ass'y ....................... 26
9-0) TPS-126E, F, G (orH) Fuse P.C. Board Ass'y ............................. 28
9-(8) TAP-273B Power Amp. P.C. Board Ass'y ............................... 29
(HQ) TAG-4888 S.E.A. (Sound Effect Amp.) P.C. Board Assy ................... '. 34
10. Packing Materials and Part Numbers ...................................... , . . . 37
11. Accessories List ....................................................... 37
12. JR-S401 Schematic Diagram .............................................. 33
13. Parts List with Specified Numbers for Designated Areas ............................. 40
Warning!

When replacing the parts marked with A , be sure to use the designated parts to ensure safety.