Vector G08 Series Faq page 6

The Input Clamp board has a pinout as follows:
Deflection Board
The deflection board is the large PCB mounted to the bottom of the chassis (7" x 10"). The G08-
003 version will also have two vertically mounted PCBs (2" x 2") connected to the deflection board
which mount on the header pins on the right side of the board. These are the "current limiting"
boards. According to the schematics, the G08-001 does not have the "current limiting" boards, nor
the header pins on the deflection board. Therefore, the deflection transistors would plug in directly
to the G08-001 deflection board.
The horizontal and vertical "current limiting" boards were an attempt to add short circuit and
current limiting protection for the output transistors. These boards would typically fail
catastrophically in the event that something went wrong with the deflection circuitry.
The deflection board creates a low voltage power supply for the HV board, and controls the "X"
and "Y" video amplifiers. Looking at the board with the potentiometers (controls) towards you, the
upper right side of the board is "Y" deflection circuitry, the lower right/middle is the "X"
deflection circuitry, and the left side of the board is the low voltage power supply.
There are several different versions of the deflection board that were made for the G08-003. They
are easily distinguished from one another by looking at the top of the deflection board under the
large 3-ohm 20W ceramic resistors (or 2 1.5-ohm 20W resistors, depending on your deflection
board version) and looking for text stating "Issue X Component Layout", where "X" is the issue
number.
Issue 1, 2, and 3 deflection boards have the same or similar component layouts as found in the
"Sega/Gremlin" Color X -Y monitor manual. Issue 1, 2 and 3 deflection boards have resistors R636,
R637, R736, and R737 typically on the bottom of the deflection board, or hacked into the current
limiting boards.
Issue 4 deflection boards may or may not exist. It is currently unknown if any G08 Issue 4
deflection boards were produced.
Pin # Description
1 Horizontal Input
2 Vertical Input
3 Common
4 Red Input
5 Green Input
6 Blue Input
G08 Vector Monitor Guide
Specification
+/- 4V maximum
+/- 3V maximum
Ground
+4V @ full brightness
+4V @ full brightness
+4V @ full brightness
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