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.
Dear Sirs,
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
the big video recorder format s-vhs many features delicate in loading system of the cassette. Such machines are no longer manufactured, it would be too expensive.
Text excerpt from page 134 (click to view)
Trouble (5) Black and blurred vertical stripes or band
Action to be taken At the scanner Check the following components: - CIS unit At the printer side Clean the paper path which may be contaminated with toner. Slide the wire cleaner to clean the corona wire inside the drum unit. Make sure that the wire cleaner is returned to its home position. Replace the toner cartridge. Replace the drum unit. Replace the heat-fixing unit.
(6) Black vertical streaks on gray background
At the printer side Clean the laser beam window (glass) on the laser unit. Replace the laser unit.
(7) Black and blurred horizontal stripes
At the printer side Slide the wire cleaner to clean the corona wire inside the drum unit. If they appear at 94-mm or 17-mm intervals, replace the drum unit. If they appear at 54-mm intervals, replace the heat-fixing unit. Replace the high-voltage power supply PCB.
(8) Horizontal lines
At the printer side Check the connection between the right end of the paper feed roller and the grounding wire. (Contact in the illustration given on page 6-28.)
