![](/images/new-backgrounds/1117241/11724141x1.webp)
6. TROUBLESHOOTING page 18
To check the charger, disconnect the positive terminal from the battery and J1 from the
NOTE:
Do not go on to the next step until the charger is working correctly. Battery voltage must be at least 12.5 Vdc for the unit to turn on.
6.3. TROUBLESHOOTING
If the unit is totally inoperative, verify that the unit is receiving power throughout the system. Refer to "Controller Board" Drawing 3 (Appendix F.) for the following procedure.
6.3.1.
If the unit has power but still does not operate, test the power to the controller board. Connect the negative lead of the DVM to TP1 and the positive lead to TP2. The power should be
5 ±0.1 Vdc.
Model