Ericsson GE 19B801507P1, Руководство по обслуживанию

Страница: 7 / 16

PROBLEM ACTION
1. CHARGE Led does not light Check input fuse, Q2, & C19
2. READY light fails to come on.
Battery pack is good.
Charging time has elapsed. Check Q3, Q4, & DS4
3. A13-10 always high. Logic fails to reset. Check C19
4. A13-6 always low. No fast charge. Check C22
5. A13-5 always low. Logic will not reset Check C23
6. Fast charge circuit does not open. Check CR9, Q3, & Q4 for
Table 1 - Quick Checks
REF
STEP SW
POS A13
6 PIN
5 NO
10 CHGR
LED READY
LED REMARKS
6 1
2
3 LOW*
HIGH*
LOW LOW
LOW
HIGH LOW
LOW
HIGH ON
ON
ON OFF
OFF
ON COLD BATTERY
NORMAL BATTERY CHARGING
CHARGED BATTERY
7 3 LOW LOW LOW ON OFF HOT BATTERY
8 N/A LOW LOW LOW OFF OFF NO BATTERY
* LOW- Less than 1.0 Volt
HIGH- Greater than 3.0 Volts
Table 2 - Equipment Status
Power Supply Voltage: +13.8 Vdc.
CHECK
POINT
S1 : ON
W/O BATTERY
RAPID CHARGING
STANDARD HI CAPACITY
TRICKLE CHARGING
STANDARD/HI CAPACITY
TP2 8.35 8.50 8.57 8.37
TP5 - 4.15 4.20 4.8
TP6 4.74 4.74 4.74 4.74
TB1-4
(T) 5.60 5.47 5.54 3.53
Q3-E 13.79 12.02 11.98 13.79
Q4-C 13.37 0.03 0.03 13.36
A13-14 4.04 3.58 3.68 8.08
A13-12 5.13 11.09 11.05 5.21
Table 3 - Typical Voltage Readings (all voltages are + dc.)
TEST ADAPTOR
A Test Adaptor may be constructed to facilitate servicing the Vehicular Charger. The Test Adaptor is used to simulate actual battery
pack conditions and to determine if the charger is working properly. Simulations include cold battery pack, battery pack at room
temperature, and a hot battery pack. A Schematic Diagram and Parts List are shown below.
LBI-31864
6