Akai GX-77 Service Manual

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2)
SYSCON
P.C
BOARD
T1010B5250
(3ED),
INTERMEDIATE
P.C
BOARD
T1010D520A,
T1010D520B,
LAMP
P.C
BOARD
T1010D5230
and
DETECTOR
P.C
BOARD
T1010DS240
DETECTOR PCB
TIOIOD5240
PRE AMP PCB
POWER SUPPLY PCB
INTERMEDIATE PCB (L)
TIOlIODS520B
PNK/LONG BLK
INTERMEDIATE PCB (R)
TIOIOD520A
WARNING: AINOICATES SAFETY CRITICAL COMPONENTS. FOR CONTINUED SAFETY,
REPLACE SAFETY CRITICAL COMPONENTS ONLY WITH MANUFACTURER'S
RECOMMENDED PARTS
AVERTISSEMENT: AIL INDIQU LES COMPOSANTS CRITIQUES DE SURETE. POUR
MAINTENIR LE Of cecum OE L' APPAREIL NE REMPLACER LES
IENT EST CRITIQUE POUR LA SECURITE
QUE PAR DES PIECES RECOMMANDEES PAR LE FABRICANT
WHT/CROSS BLK
WHT/SHORT BLK
WHT
WHT/LONG BLU
WHT/CROSS BLU
WHT/SHORT SLU
MOTOR SW{| >
SW8030
LAMP PCB oe coal LOCATION OF
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a ray 411043, 481053 -~2SCS36K-NP(F,G) TR4108----C3
= TR9------- c4
\ \/ 5 TRIO------ D4
/\ ba —-* 230436 (E,F) TRIltol4---D1
& TRIStol7--- B2
F TRI8,19 ----B4
TR20----- Be
TR2I------ B3
WHT
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YLW/LONG BLK @)
WHT
WHT/LONG RED
G) WHT/LONG RED
WHT
TR22t025---A3
TR26,27---A4
WHT/LONG BLU
WHT/CROSS BLU
WHT
WHT/LONG BLK
WHT/CROSS BLK
WHT/SHORT BLK
@)
(8)
@)
(3)
(2)
()
(19)
~. @ WHT/LONG BLU C1)
(8) WHT (2)
@g-P BX (14)
6) PNK/LONG BLK (5)
WHT (6)
WHT/LONG RED
WHT/CROSS RED (4)
WHT/ SHORT RED G3)
WHT
'
bow
TRANSISTOR
TR291034--C 1
TR35,36---B 1
TR37,38---Al
TR39----- c2
TR40----- A2
TR4I------ EI
TR42,43---E2
TR45------ EI
TR46,47 ---E3
TR48 ----- E2
TR49,50---E4
TRSI,S2---E3
TR53-----B3
COUNTER PCB
COUNTER PCB
N
@)WHT/LoNG
REO
8
PRE
AMP
PCB
VOLTAGE MEASURED AT FWO MODE
@® INDICATES THAT TIMING PULSE WILL BE DISPLAYED
A
fm
288605 280438 280794
2SC536K
(18) 2SA608K
i i oi 28C2274k
MOTOR SERVO PRE AMP PCB REMOCON PCB OPERATION PCB sw9o4 SELECTOR PCB POWER SUPPLY
pce TENSION] [LOADER PCB
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37

Akai GX-77 Specifications

General

Track System	4-track, 2-channel stereo
Tape Speed	3 3/4 ips, 7 1/2 ips
Wow and Flutter	0.03% (19 cm/s)
Heads	3
Motors	3
Dimensions	440 x 244 x 358mm
Inputs	Line input (RCA)
Outputs	Line, Headphones