| Signal | Connected To | Notes | |
| Light Input | |||
| Light/Sound | R639 | High=Light/Low=Sound | |
| Sound Input | C607 | ||
| Not Connected | |||
| Not Connected | |||
| Ground | |||
| Ground | |||
| Ground | |||
| WR Conversion | U602-4 | ||
| WR Conversion | U602-5 | ||
| Enable | R604 | ||
| +5V | R605 |
Copyright © 1992 Donnie V. Savage
All Rights Reserved.