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Keypad PCA to Main PCA
To connect the Keypad PCA to the Main PCA, solder the following connections (refer to
Figure 4):
1. Solder the 12-conductor cable to the back of the Keypad PCA with pin 1 on the cable
aligned with pin 1 on the Keypad PCA.
2. Solder the Keypad ribbon cable to J11 with pin 1 lined up with the square hole in
J11.
Display Assembly to Main PCA
To attach the Display Assembly to the Main PCA, make the following connections:
1. Solder a red wire from J5 on the Main PCA to the "A" hole in the Display PCA.
2. Solder a black wire from J7 on the Main PCA to the "K" hole in the Display PCA.
3. Solder the 14-connector cable to the back of the Display PCA with pin 1 on the cable
aligned with pin 1 on the Display PCA.
4. Solder the 14-conductor ribbon cable to the LCD Display (J4) position on the right
side of the Main PCA with pin 1 in the square hole in J4.
Ribbon
cables
Figure 4. Keypad PCA Connections
525A
Modular-Level Maintenance
aby03f.eps
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