Pioneer spec 4 service manual

Page 2

OPEC-4

MODEL SPEC-4 COMES IN TWO VERSIONS DISTINGUISHED AS FOLLOWS:

1y.- Von-.3 lot-uh
KU 1201/ may U. S. A mofll
5 MW, I20V.220VIM240V(MMI mumlmodd

0 1h- urukc mud in applied: In KUtp2-940) and Styli-p) types.
0 For Inviting a! 8 type plan I'll? to [U type with tho nuptial o] 1.09th in (he Addition-I Suw'u Manual
[Ml-9481

C ONTENTS
1. SPECIFICATIONS .................................................... 2
2. FRONT PANEL FACILITIES ..... . ...... . .................... . . . . ...... 3
3. CONNECTION DIAGRAM ............................................. 4
. BLOCKDIAGRAM ............... . ................ 5
5. CIRCUIT DESCRIPTION
6.1 Pom Ampliflgv .................................................. I
5.2 m Amplifior ................................................... s
5.3 Function Circuil ................................................ 7
5.1 PM Supply Ciwuit .............. . ..................... . ........ B
5.5 01h. ......... . . . . . ......... . ................................. 0
0. DISASSEMBLV ...................................................... 10
7. PARTS LOCATION ...... . . . . .......... . .............................. 11
8. ADJUSTMENTS
8.1 PM Amfllflu .................................................. 14
0.2 Mm Ampliflnr .................................................. 15
9. EXPLODED VIEWS
0.1 Exumnl Pun ............................................ . ....... 17
0.2 Imam-IPv1 ............................................. 19
10. SCI'IEMATIC DIAGRAMS, ac. BOARD PATTERNS AND PARTS LIST
10.1 Sch-Inuit DiammlndMilaIIunou-um ............................. 22
10.2 Mott Amum- Ammbly (Am-113) ........ . .. ...................... 26
10.3 Pm AmpIiIior Anomfly (AIR-005) ...................... . . . . . . ..... 31
10. Fun My IAWR-MJ) ......................................... as
10.5 Pm Soon» My (AWR-IZIO) ................................... 38
10.0 PM Sum Alumny (ANTI-10) ........... . . . . .................... 39