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The following was a posting made in Nov, 1996 on
Subject: TECH: Corrected Wintron drawing, Amplifone Hi-V XFMR
Date: 20 Nov 1996 09:33:42 -0700
Organization: University of Denver, Dept. of Math & Comp. Sci.
Just got off the phone with the engineer at Wintron who designed the
replacement Hi-V transformer for the Amplifone X/Y monitor. It seems that
the documentation which was sent out with some of the transformers a while
back had some errors in it. He faxed me out a copy of the newer drawing which
has a date of September 19, 1996. With Rick's permission here are the correct
Wintron Drawing #26862802
[COLOR Pin # Signal]
RED - 9 - B+
YELLOW - 8 - Start of 180V secondary
BLACK - 6,7 - GROUND
GREEN - 4 - 180V secondary (Video B+)
ORANGE - 1 - Collector of switch transistor
GRAY - 10 (HTR1) - Filament
Here's my interpetation:
RED wire from XFMR to PCB hole T2 pin 9. Low side of MC1.
YEL wire from XFMR to PCB hole T2 pin 8. This is +24VDC.
BLK to PCB hole T2 pin 6 or 7. This is GROUND.
GRN wire from XFMR to PCB hole T2 pin 4. Video B+, connects to anode of CR3.
ORG wire from XFMR to PCB hole T2 pin 1. Goes to COLLECTOR of Q3 (BU406D).
GRY wire from XFMR to PCB hole T2 pin 10. This is the filament's hot side.
If anyone has the original copy which is a partial copy of the Hi-V schematic
with hand-written connections, don't use it, it has errors.
Dave Fish | "We want...Information. INFORMATION
Melrose, MA USA | You won't get it!
firstname.lastname@example.org (work) | By hook or by crook we will"
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