Nakamichi PA 7 Service Manual

Page 1

n Service Manual

Nakamichi

Nakamichi
PA-7
PA-7E

Power Amplifier

Page 2

CONTENTS

1. General ...... . ................... . . 1
2. Parts Location for Electrical Adjustment . , . . 2
3V Electrical Adjustments ......................... . . ...... 2
3. 1. Preparation for Adjustment ..................... 2
3, 2. DC Balance Adjustment ....... 2
3. 3. Idling Current Adjustment ....................... . .......... 2
4V Mechanism Assy and Parts List ....................................... 3
kl. 1. Synthesis .......... . .................................. 4
4. 2. Handle L Assy (A01) ............................................. . ...... 4
4. 3. Handle RAssy (A02) .............................. , ........ . . . . . . . 4 . . . . 4
4. 4, Front Panel Assy (A03) . . . . 4
4. 5. Rear Panel Assy (A04) ...... . ..................... . . .......... . ..... l . . . . 5
5 Mounting Diagrams and Parts List . . . 5
5. 1 Clipping LED P.C.B. Assy 5
5. 2. Power LED P.C,B. Assy . . 5
5, 3. Limiter P.C.B. Assy ........................ l ....... . ........... . . . , 5
5. 4 Amp, L P.C.BV Assy ........ . . ............. . .......................... 6
5. 5 Amp. R P.C.B. Assy ..................................................... 7
5. 6. Protector L P.C.B, Assy 7
5. 7. Protector R RCB. Assy ............. 7
6. Sch matic Diagram ............. 8
7. Wiring Diagram ............... 9
8. BlockDiagnm ........... . . . 9
9. Specifications ...................................................... . .......... 10
1. GENERAL

1.1. Volume selecmr ~
Voltage selector is installed on the rear game] for othar union of the: Nflnmlchl PA-T.
This voltage selector can select 110 V, 120 V. 220 V or 2&0 V at customers disposal.

1.2. Packing Mammals. Ownar's Mumul and Pow Con:
Part No. Description

0F038753 Outer Carton PAW

0F03876C Cute! Caxton PA-v'E

OFOSSGBB Inner Cmon PA-7

01038703 Inner Canon PA-IE

0F03877B Packing

0D04631A Owners M anual Enillsh

000453018 Owners Manual English/Gemm/French
0890137A Power Cord PA-7 (USAA & Others)
01390] 39A Power Cord PA-V (Australia)
0890138A Power Cord PA-7E (220V Claus 2)
DB90154A Power Cord PAJIE (Switzerland)
0890140): Power Cord PA-TE (UK)
OFOSSB'IA Power Cord Bun!

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