Display Failure (Nntn4563, Nntn4819, Nntn4717 & Nntn5567 Vocon Kits) - Motorola ASTRO XTS 5000 Detailed Service Manual

Troubleshooting Charts: Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits)
5.5 Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567
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.
6881094C31-E
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
5-13
November 16, 2006