Motorola Astro Dimetra MTP, Инструкция по эксплуатации

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45
Diagrams and Parts Lists
5
Note: The voltages in the tables below are typical values from an XTVA powered by a 13.8Vdc supply.
Figure 19 DC Switch Section Logic Diagram
Table 5 Charger Section Voltage Measurements
SIGNAL DC SW 5V REG BATT R
C
* BATT R
T
BATT V DAC OUT REF RATE† REF RATE† BATT B+†
MEASURED AT
Q6 U7 VR2 VR3 U5 U3 Q13 R140 Q1, 2, 3
@D15 1 3 C C 44 5 C @R66 C
RAPID 13.4 13.6 5 0.79 2.335 3.430 1.190 9.48 9.48 9.58
TRICKLE 13.4 13.6 5 0.79 2.335 3.447 0.213 8.66 8.66 8.67
*
— Related to battery kit number NTN8294_
† — Depends on battery charge status
Table 6 LED Circuitry Section Voltage Measurements
SIGNAL
CHARGE MODE
RED GREEN TRANSMIT RECEIVE
MEASURED AT
U5 Q10 U5 Q11 U5 Q16 U5 Q16
31 E 35 E 12 E 12 E
ON 5 4.3 5 4.3 5 4.3 5# 4.3#
DIM 5 2.9 5 2.9 5 2.9 5# 2.9#
#
— Pulsed signal from 0Vdc to the voltage shown at a 10% duty cycle
Table 7 DC Switch Section Voltage Measurements
SIGNAL ENABLE HOLD OFF DRIVE PASS SUPPLY HOLD
MEASURED AT
Q31 Q6 Q19 Q4 U5
D D C S 9
ON 0 13.4 0.62 13,7 5
OFF 13.6
0 (RAD OUT)
13.70 <2 0
13.4 (RAD IN)
A+ (VEH BATT +)
IGN_SWITCH (VEH ON)
O (RADIO ON)
(VA ON)
— OR —
D9
D17
— AND —
Q6
DRIVE
Q19
Q4
— OR — Q31
RAD_IN
µ
P
U5
Pin# 9
SUPPLY HOLD
Conditions:
If either the vehicle or the radio is on
while (AND) the radio is in the
pocket or the µP SUPPLY HOLD is
asserted, the DC Switch will be ON.
Refer to Table 7, “DC Switch Section
Voltage Measurements,” to
diagnose a unit.
Note: For rev. “A” consoles,
ignore the radio ON
condition.