There are currently no product reviews.
A good manual! fast service and good qualityi for pdf document.
Very helpful and complete manual. Maybe only one negative is schematics have sometimes unreadable name of the parts. But it's not a big problem.
Excellent high quality schematics brought my old Heidelberg back to life. Fast download at a reasonable price. Thanks.
This document is just what I was looking for, it´s very useful, it contains adjustment procedures for the final stage of the power amp and also
has a complete wiring diagram and description of the main semiconductors used in the design.
Thank you for the fast support, the manual does provide all necessary information to repair the radio. All schematics are in a good quality for reading.
The manual fits 100% to my requirements as a technican.
Kind regards Thomas
AV-21D81 AV-20N81 AV-16N81 AV-16N81G
REMOVING THE REAR COVER
1. 2. 3. Unplug the power plug. As shown in figure, remove the
2 screws marked
. Withdraw the rear cover toward you.
REMOVING THE PW BOARD
After removing the rear cover. 1. Slightly raise the both sides of the PW BOARD by hand. and remove the PWB stopper marked from the front cabinet. 2. Withdraw the PW BOARD backward. (If necessary, take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER
After removing the rear cover. 1. As shown in figure, remove the 4 screws marked . 2. Follow the same steps when removing the other hand speaker.
CHECKING THE PW BOARD
1. To check the back side of the PW Board. 1) Pull out the PW Board. (Refer to REMOVING THE MAIN PW Board) 2) Erect the PW Board vertically so that you can easily check the back side of the PW Board. [CAUTION] When erecting the PW Board, be careful so that there will be no contacting with other PW Board. Before turning on power, make sure that the CRT earth wire and other connector are properly connected.
WIRE CLAMPING AND CABLE TYING
1. Be sure to clamp the wire. 2. Never remove the cable tie used for tying the wires together. Should it be inadvertently removed, be sure to tie the wires with a new cable tie.