Akai GX-646 Service Manual

SECTION 1
SERVICE MANUAL
TABLE OF CONTENTS
T. sSPECIBICA TIONS #9 355.0250 025 0) Hise Gis ae a a W are bei eieate: bis hat & Wha ta ia A B98 coe Dae eae 8 480s 4
Il. DISMANTLING OF UNIT... 1.0... 00. c ec eee ene vai tbs ph Biel he awe ah eae dncahyer ave! S78, wi Hone a tas 5
TID. @CONTROUES | 5.05.50 orsi estes ta 0255 sacs Mia a ews Bele Bb Was Ring ees ie ta Talia) Ola) ae alae HE aaa 6
IV. PRINCIPAL PARTS LOCATION ......... 0. cc cece cece cere ener renee wren renees 7
V. VOLTAGE AND CYCLE CONVERSION 1.0.0... 0c cece cece ence renee ener e ee eeenoee 8
1. VOLTAGE CONVERSION 2.0... ccc cee ce eee eee te eee ene e ee eee eee eeeenes 8
2, CYCLE CONVERSION 2.0... ccc cece cere reer teen e neers ee sees seeeeeereees 8
VI. MECHANISM ADJUSTMENT ... 1... cic cc cc ce eee tenet eee eee teen e nee 9
1. GUIDE ROLLER LOOSE PLAY ADJUSTMENT . 1.0... ccc ccc cece eee eens 9
2. TENSION MICRO SWITCH POSITION ADJUSTMENT ........ 0. ee eee eee e cree erevees 9
3, ROLLER BLOCK- HEIGHT ADJUSTMENT 03. c\.a Casas sb cadau erated aeaeinls oe eee 9
4. REEL TABLE HEIGHT ADJUSTMENT... 1... ee ee eee eee eee aes 10
5. CAPSTAN SHAFT LOOSE PLAY ADJUSTMENT ....... 0.0 cece ee eee eee entre ene 10
6. BRAKE BAND POSITION ADJUSTMENT AND BRAKE TENSION ADJUSTMENT ........... 11
7. PINCH ROLLER POSITION ADJUSTMENT «0... ccc ccc eee cc ee eee nee te eens 12
8. PAUSE PLUNGER POSITION ADJUSTMENT ...... ccc cece cee teen een teen neee 12
9. PINCH ROLLER PRESSURE ADJUSTMENT .... 0... ccc eee cc eee eee e entrees 12
10. TAPE SPEED ADJUSTMENT 20... ccc cee eee ee ee een e eee ennnees 13
VII. HEAD ADJUSTMENT .. 0... cc ce cc etre eet eee eee renee ere neee 14
VII. AMPLIFIER ADJUSTMENT .. 10... ce eee eee ee eee een ee tener eres 16
IX. DC RESISTANCE OF VARIOUS COILS 2.0... ... ccc ccc ccc ee etree eee e eee tenees 19
X. CLASSIFICATION OF VARIOUS P.C BOARDS .. 0.0... ccc cee eee eee ene reenes 20
1. P.C BOARD TITLES AND IDENTIFICATION NUMBERS ........ 0. cee cece eee teres 20
2. COMPOSITION OF VARIOUS P.C BOARDS ... 0... cee ee ce ee eee ee eee nees 21
For basic adjustments, measuring methods, and operating principles, refer to GENERAL TECHNICAL MANUAL.

Akai GX-646 Specifications

General

Brand	Akai
Model	GX-646
Category	Tape Deck
Language	English