Standard Bias Table; Table 4-2. Standard Operating Bias - Motorola ASTRO XTS 5000 Detailed Service Manual

4-4
4.4

Standard Bias Table

Table 4-2 outlines some standard supply voltages and system clocks which should be present under
normal operation. These should be checked as a first step to any troubleshooting procedure.
Signal Name
13 MHz
FLIP_32K
SINE32K
CKIH
16_8MHz
POR
RESET_OUT
VSW1
VSW2
FILT_B+
V2
GCAP_B+
UNSW_B+
SW_B+
VCC5
VSW_1_55 V
* = NTN9564, NNTN4563, & NNTN4819 VOCON kits
** = NNTN4717 VOCON kit
July 21, 2004

Table 4-2. Standard Operating Bias

Nominal Value Tolerance
13 MHz ±1000 ppm
32.768 kHz ±400 ppm
32.768 kHz ±400 ppm
16.8 MHz
16.8 MHz
3.0 Vdc
3.0 Vdc
3.85 Vdc
1.85 Vdc
7.5 Vdc 6.0-9.0 Vdc
3.0 Vdc*
2.9 Vdc**
7.5 Vdc 6.0-9.0 Vdc
7.5 Vdc 6.0-9.0 Vdc
7.5 Vdc 6.0-9.0 Vdc
5.0 Vdc
1.55 Vdc
Troubleshooting Procedures: Standard Bias Table
VOCON Board Source
C303 (NTN9564)
C339 (NNTN4563, NNTN4819 &
(under shield SH102
on NNTN4563, NNTN4819 &
C313 (NTN9564)
C306 (NNTN4563, NNTN4819 &
(under shield SH101 on NNTN4563,
NNTN4819 & NNTN4717 or
test fixture pin 7 on the
board-to-board connector)
(under shield SH101
on NNTN4563, NNTN4819 &
±5% POR test point
±5% RESET_OUT test point (NTN9564)
D401, pin 3 (NNTN4563, NNTN4819 &
±5%
±5%
±5%
±5%
±5% R407 (NNTN4717 VOCON kit only)
NNTN4717)
U302, pin2
NNTN4717)
NNTN4717)
R452
C452
NNTN4717)
NNTN4717)
R502
R501
C523
R560
R581
B104
R587
R503
6881094C31-D