Realistic sta 2100 service manual

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WM 1.152763

STA-21 O
ARA/FM STEREO RECEVER

Catafiog Number : 31-2076

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CUSTOM MANUFACTURED FOR RADIO SHACKEA DIVISION OF TANOY CORPORATION

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I L . - _ 1 CONTENTS .... _;____I

. ' ' . Page' .
I) ELECTRICAL PERFORMANCE SPECIFICATIONS ........ 3- 5
2) DISASSEMBLY INSTRUCTIONS ........ ................ . ..... - 6- 7
3) BLOCK DIAGRAM ............................................. 8
4) DIAL STRINGING DIAGRAM .................................... 9
5) LEVEL DIAGRAM ............................................. 9
6) OPERATION CHECK FOR CIRCUITS ......................... 10-19
7) ALIGNMENT INSTRUCTIONS ................................. 20.44
8) BRIEF DESCRIPTION OF PROTECTOR CIRCUITS ............. 25-27
9) TROUBLESHOOTING ................................... 27-32
I0) IC & TRANSISTOR LEAD IDENTIFICATION ...................... 33
11) THE VALUE SELECTED PARTS ................................. 34
12) FRONT END ASSEMBLY ....................................... 34
13) PRE AMP WITH SELECTOR SWITCH PC B (TOP& BOTTOM VIEWS) .. 35
I4) AM/FM IF & MPx PCB. (TOP & BOTTOM VIEWS) ........ 35-37
IS) TONEAMP, MUTING,TAPE SWITCH.P.C.B. (TOP & BOTTOM VIEWS) 33 -39
16) MAIN AMP PCB. (LEFT) (TOP & BOTTOM V EWSI ............ 40
17) MAIN AMP PCB. (RIGHT) (TOP & BOTTOM V EWSI ............ 41
IB) PROTECTOR & METER PCB. (TOP & BOTTOM V EWS) ........ 42.43
19) POWER SUPPLY PCB. (TOP 8! BOTTOM V EWS) ............ 44
20) SPEAKER SWITCH PCB. (TOP & BOTTOM V EWS) ............ 45
2)) MODE SWITCH P...CB (TOP & BOTTOM V EWS) ............ 45
22) MAIN SUB PC B. (LEFT 8! RIGHT) (TOP & BOTTOM VIEWS) ....... 43
23) RELAY PCB. (TOP & BOTTOM VIEWS) ............ 46
24) PHONO LEVEL PCB. (TOP BI BOTTOM VIEWS) ............ 46
25) SELECTOR INDICATOR PCB. (TOP VIEW) .................... 46'
26) LED WITH POWER SWITCH PCB. (TOP VIEW) .................... 47
27) ELECTRICAL PARTS LIST ............................... 4744
28) EXPLODED VIEW PARTS LIST ............................... 55 ..55
29) PARTS CHANGE NOTICE ....................................... 57
30) IC INTERNAL DIAGRAM ................................... 53-51
31) SCHEMATIC DIAGRAM ..................... SEPARATE SHEET
32) EXPLODED VIEW ....................... , ......... SEPARATE SHEET