Motorola ASTRO XTS 5000 - Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits)

6881094C31-E November 16, 2006
Troubleshooting Charts: Display Failure (NNTN4563, NNTN4819, NNTN4717 & NNTN5567 VOCON Kits) 5-13
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.
MAEPF-27505-B
End
Replace
LCD Display
Check integrity
of B101
2.775 V<V<3.1 V?
No Display
Problem
Resolved?
No
No
Ye s
Ye s
Replace
B101
Verify V2
using
DC Supply Failure
flowchart
B101 OK?
No
Ye s
Check DC
on J301,
pins 17 and 18
1