Display Failure (Nntn4563, Nntn4819, & Nntn4717 Vocon Kits) - Motorola ASTRO XTS 5000 Detailed Service Manual

5-8 Troubleshooting Charts: Display Failure (NNTN4563, NNTN4819, & NNTN4717 VOCON Kits)
5.5 Display Failure (NNTN4563, NNTN4819, & NNTN4717 VOCON Kits)
Page 1
NOTE: The NNTN4563 VOCON board is compatible only with the 7285726C02 display module,
and the NNTN4819 VOCON board is compatible only with the 7285726C03 display
module.
October 14, 2003
No Display
Replace
LCD Display
Yes
Problem
Resolved?
No
Check DC
on J301,
pins 17 and 18
Yes
2.775 V<V<3.1 V?
No
Check integrity
of B101
No
B101 OK?
Yes
Verify V2
using
DC Supply Failure
flowchart
End
1
Replace
B101
MAEPF-27505-B
6881094C31-C