Pioneer C 21 Service Manual
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Extracted text from Pioneer C 21 Service Manual (Ocr-read)
Page 1
STEREO PREAMPLIFIER
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SERVICE MANUAL
Page 2
MODEL C-21 COMES IN TWO VERSIONS DISTINGUISHED AS FOLLOWS:
13-21
Type Vokage Remarks
KL 120v only . U.S.A. model
5 110V, 120V, 220v and 240v lSwitchable) General export model
CONTENTS
1. SPECIFICATIONS 2
2. FRONT PANEL FACILITIES ........................................... 3
3. CONNECTION DIAGRAM ............................................. 4
4. DISASSEMBLY ....................................................... 5
5. PARTS LOCATION ................................................... 6
6. BLOCK DIAGRAM AND LEVEL DIAGRAM ............................... 8 .
7. CIRCUIT DESCRIPTIONS
7.1 Equalizer Amplifier ............................... _ ................. 9
7.2 Flat Amplifier .................................................... 10
7.3 MutingCircuit ....... 10
7.4 PowerSupplyCircuit .......................... 11
8. EXPLODED VIEW .................................................... 12
SCHEMATIC DIAGRAMS, P.C. BOARD PATTERNS AND PARTS LIST
9.1 Schematic Diagram for KL~type ..................................... 19
9.2 Schematic Diagram for S-type ....................................... 21
9.3 Miscellanea ....................................... 23
9.4 Flat Amplifier Assembly (AWK-055) .................................. 24
9.5 Input Assembly (AWF-025) ......................................... 3O
10. 35
PACKING ...........................................................