Vintage Audio
this section covers some restoration work that I did on my vintage HI-FI gear
Main Internet site | FAQ | Personal
Article #1 | 06:43 PM Saturday 11/11/2017

AKAI GX-630D: Introduction

...

...

...

Article #2 | XX:XX PM XXX XX/XX/2017

AKAI GX-635D: Technical Data

This reel to reel tape machine has the following technical characteristics.

TECHNICAL PARAMETERS
ParameterValue
N/AN/A

Article #3 | XX:XX PM XXX XX/XX/2017

AKAI GX-635D: Parts List

...

Descriptions and Parts Listings

The SYSCON board is coded XXX and is located in the top section of the tape machine.

SYSCON Board (XXX)
IdentifierSchematicRecommended
C12200 uF / 35 V
C2220 uF / 35 V
C322 uF / 25 V
C41000 uF / 25 V
C52200 uF / 16 V
C610 uF / 16 V
C71000 uF / 10 V
C8100 uF / 16 V
C1110 uF / 16 V
C121 uF / 25 V
C151 uF / 25 V
C1710 uF / 16 V
C181 uF / 100 V
C211 uF / 25 V
C221 uF / 25 V
C231 uF / 25 V
C241 uF / 25 V
C251 uF / 25 V
C261 uF / 25 V
C27220 uF / 10 V
C28220 uF / 10 V
C2947 uF / 25 V
C30220 uF / 10 V
C31100 uF / 10 V
C32100 uF / 10 V
C33100 uF / 10 V
C3410 uF / 16 V
C3547 uF / 6.3 V
C3647 uF / 6.3 V
C3747 uF / 6.3 V
C381 uF / 25 V
C3910 uF / 16 V
C4010 uF / 16 V
C411 uF / 25 V
C4222 uF / 10 V
C431 uF / 25 V
C4610 uF / 6.3 V
C4710 uF / 6.3 V
C48470 uF / 160 V
C49100 uF / 100 V
C53100 uF / 3.15 V
C5622 uF / 25 V

For simplicity of the parts order, I have centralized the parts below.

SYSCON Board (XXX)
How ManyValueType
121 uF / 25 VTantalum Capacitor
810 uF / 16 VTantalum Capacitor
1100 uF / 3.15 VTantalum Capacitor
4100 uF / 16 VElectrolytic Capacitor
1100 uF / 100 VElectrolytic Capacitor
11000 uF / 10 VElectrolytic Capacitor
11000 uF / 25 VElectrolytic Capacitor
322 uF / 25 VTantalum Capacitor
3220 uF / 10 VElectrolytic Capacitor
1220 uF / 35 VElectrolytic Capacitor
12200 uF / 16 VElectrolytic Capacitor
12200 uF / 35 VElectrolytic Capacitor
347 uF / 6.3 VTantalum Capacitor
147 uF / 25 VElectrolytic Capacitor
1470 uF / 160 VElectrolytic Capacitor

The AMP board is coded XXX and is located in the bottom section of the tape machine.

AMP Board (XXX)
IdentifierSchematicRecommended
C1a10 uF / 16 V
C1b10 uF / 16 V
C5a2.2 uF / 50 V
C5b2.2 uF / 50 V
C6a47 uF / 25 V
C6b47 uF / 25 V
C7a10 uF / 10 V
C7b10 uF / 10 V
C10a100 uF / 10 V
C10b100 uF / 10 V
C11a10 uF / 16 V
C11b10 uF / 16 V
C13a10 uF / 16 V
C13b10 uF / 16 V
C14a10 uF / 16 V
C14b10 uF / 16 V
C15a22 uF / 25 V
C15b22 uF / 25 V
C22a10 uF / 16 V
C22b10 uF / 16 V
C24a47 uF / 16 V
C24b47 uF / 16 V
C27a47 uF / 10 V
C27b47 uF / 10 V
C33a10 uF / 16 V
C33b10 uF / 16 V
C35a100 uF / 10 V
C35b100 uF / 10 V
C37a10 uF / 25 V
C37b10 uF / 25 V
C39a10 uF / 25 V
C39b10 uF / 25 V
C40a10 uF / 16 V
C40b10 uF / 16 V
C41a10 uF / 16 V
C41b10 uF / 16 V
C42a4.7 uF / 25 V
C42b4.7 uF / 25 V
C44a4.7 uF / 25 V
C44b4.7 uF / 25 V
C45a22 uF / 25 V
C4910 uF / 16 V
C5010 uF / 25 V
C51220 uF / 25 V
C52a4.7 uF / 25 V
C52b4.7 uF / 25 V
C5333 uF / 10 V
C54a47 uF / 10 V
C54b47 uF / 10 V
C5610 uF / 25 V
C57100 uF / 25 V
C5822 uF / 25 V
C5910 uF / 25 V
C61100 uF / 25 V

For simplicity of the parts order, I have centralized the parts below.

AMP Board (XXX)
How ManyValueType
2610 uF / 50 VElectrolytic Capacitor
4100 uF / 16 VElectrolytic Capacitor
2100 uF / 25 VElectrolytic Capacitor
22.2 uF / 50 VElectrolytic Capacitor
422 uF / 25 VElectrolytic Capacitor
133 uF / 16 VElectrolytic Capacitor
64.7 uF / 50 VElectrolytic Capacitor
847 uF / 25 VElectrolytic Capacitor

...

Article #4 | XX:XX PM XXX XX/XX/2017

AKAI GX-635D: Restoration

...

Copyright © 1998- Alexandru Groza