UPGRADE NOTES
PCB Assembly # 1540048 (Schematic 1540049) requires an upgrade to the reset circuit. The upgrade
consists of:
1) COMPONENT CHANGES:
R25 Change To 6.8K ohm, 1/4 W, +1-5%
R57 Add 220 ohm, 1/4 W, +/-5%
R58 Add 2K ohm, 1/4 W, +/-5%
2) CUT circuit trace near UA1 (See diagram)
3) INSTALL JUMPER WIRES:
BETWEEN: UA1 pin 8 and UB1 pin 5
UA1 pin 9 and CR7 Anode
UB1 pin 6 and UD3 pin 5 on BACK of board
4) CUT circuit trace between CR7 Anode and UD3 pin 5 on BACK of board.
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