- ページ 9

アンプ DYNACO Stereo 70のPDF 修復マニュアルをオンラインで閲覧またはダウンロードできます。DYNACO Stereo 70 20 ページ。 Series ii tube amplifier
DYNACO Stereo 70 にも：修復マニュアル (5 ページ), オーナーズマニュアル (12 ページ), 組み立て説明書 (16 ページ)

ページを印刷する

Page 9

IV. Reassembly

You will begin to reassemble your Stereo 70 by installing the new tube sockets, and most

of the hardware. To ease the wiring the transformers will be installed as late as possible

thereby making orientation of the amplifier easier.

A. Initial Hardware Installation (Refer to Figure 1)

1. Begin by install the four new ceramic output tube sockets. Orient each socket

such that the location notch that identifies pins 1&8 is pointing away from the

center of the amplifier. You will also need to install a ground lug between the

chassis on the tube socket on the outer hole of both V7 and V2 (nearest pins

1&8).

2. Install the two bias adjust potentiometers and orient so that their three terminal are

facing towards up (towards the pc board cutout).

3. Next, install the new ceramic rectifier tube socket (V1). Orient its location tab

(pins 1&8) so that it is facing towards the center of the amplifier.

4. Next, install a 4 lug terminal strip (3 free with 1 ground) at the location originally

occupied by the selenium rectifier (the hole between the two bias potentiometers).

Orient it so that it is parallel to the side of the amplifier and that the two free lugs

are towards the front of the amplifier while the single free lug is towards the rear

of the amplifier.

5. Next, install a 3 pin terminal strip (free - ground - free) at the original location of

the original ground lugs (immediately to the left of the Quad electrolytic

capacitor). Orient the terminal strip it easily clears the two bias potentiometers.

You may need to rotate it so that it not perfectly parallel to either the front or the

side of the amplifier. It is important that it will clear the right bias potentiometer

and the Quad electrolytic capacitor (not yet installed). Secure it firmly since this

will become your central ground point.

6. Install the choke in its original location and orientation.

7. Install the new (or cleaned) Dual RCA input connector in its original location.

This mounts from the inside of the chassis. Be sure to place the original phenolic

insulator between the assembly and the inside of the chassis.

8. Install the original Stereo-Mono switch on the front panel of the amplifier,

9. Install the two 8 pin octal sockets on the front panel of the amplifier. Both should

have their location tab (pins 1&8) pointing towards the left.

10. Install the two speaker connectors on the rear panel of the amplifier. These mount

from the outside of the amplifier with the tabs orientated so that they are nearest

the amplifier surface.

11. Install the original fuse holder.

12. Install the original power switch and orient so that the outer terminal is located

nearest the amplifier chassis surface.

13. Install the Quad capacitor replacement module in the area originally occupied by

the 7 pin terminal strip. Be certain to follow the instructions for preparation as

Dynaco Stereo 70 Power Amplifier

Restoration Manual

Detailed Procedure & Guide

R0 4-03