Bosch BAT 690 Repair Instructions page 33

"Fault no.: 390"
Possible cause:
General hardware fault.
Remedy:
1. Disconnect BAT 690 from power and restart
charging attempt with correct parameters.
If the fault persists
DANGER – Risk of electric shock from live
parts. Observe the electrical engineering safety
regulations.
2. Establish and secure connection between circuit
board M1 and power module 1 (see sec. 6).
3. Check mains voltage at power module 1 and power
module 2 at measuring points M1 and M2 (see sec.
5.6).
 Mains voltage must be 230 V.
 Device fuse is defective if mains voltage differs.
4. Replace corresponding power module if mains
voltage differs.
5. Check auxiliary voltage at power module 1 and
power module 2 at measuring points IC 14 Pin 1 and
GND1 Pin 4 (see sec. 5.6).
 Auxiliary voltage must be between 11-13 V.
6. Replace corresponding power module if auxiliary
voltage differs.
7. Connect customer service circuit board M1 to power
module 1 and BAT 690 check function.
 If BAT 690 functions with the customer service
circuit board M1, the M1 circuit board of the cus-
tomer is defective.
8. Replace the customer's M1 circuit board.
9. Define power module 1 with jumper setting as Slave
1 (see sec. 4.4.4).
10. Connect power module 2 to circuit board M1 and
BAT 690 check function.
 If BAT 690 functions, power module 1 is defec-
tive.
 If BAT 690 does not function, power module 1
and power module 2 are defective.
11. Replace power module 1 and/or power module 2.
Robert Bosch GmbH
Faults & Troubleshooting | BAT 690 | 33
1 689 975 288
en
|
2017-06-30