Replacement Control Board - Bosch ACS 653 Repair Instruction

ACS 653, ACS 663 Service Manual

Replacement Control Board

WARNING: Disconnect the unit from the
power source before beginning service
work. Incorrect use or connections can
cause electrical shock.
WARNING: Wear safety goggles
when working with refrigerants.
Refrigerants can cause eye injury.
WARNING: Use extreme caution when
disconnecting hoses. Pressurized
refrigerant may be present in hoses.
Point hoses away from you and
anyone nearby.
Instructions
These instructions outline the basic steps to
replace the control board. Refer to Figure 3-6.
Remove Existing Control Board
1. Disconnect unit from the power source.
2. Remove the cap nearby the usb ports and
remove the screw.
3. Remove the 8 screws from the front plastic
dashboard and open it in order to access
the control board.
4. Disconnect all wires from control board
including keypad and display ribbon cables.
5. Remove screws securing control board in
place and remove control board.
CBP1
CBP6
Robert Bosch GmbH
CBP17 CBJ6
P17
P12
P13
P1
P2
P3 P9 P10
CBP2
Figure 3-6. Control Board Connector Identification
Install Replacement Control Board
NOTE: All control boards are shipped from the
factory without any software on board. Service
centers must follow these installation procedures
to set the board and get unit ready to use.
1. Attach the display and keypad ribbon cables
to the control board.
2. Connect wires as shown in Figure 3-6.
3. Close and fix the front plastic dashboard
with 8 screws.
4. Screw back the screw and place the cap
(see Figure 1-15 in the Maintenance section).
5. Keep the original SD card and format as
FAT 32.
6. Download right service software (software
releases equal to or higher than 093.001.005)
from EDIS and unzip it into AC/ACS unit
original SD card.
7. Insert original SD card with service software
in new control board.
8. Download the last AC/ACS software release
from EDIS (take care about the model)
and copy and paste in one USB dongle
(previously format as FAT 32).
9. I n s e r t U S B d o n g l e i n t h e u n i t s l o t
(see Figure 1-1 in the Introduction section).
10. Clear service hose and remove them.
11. Remove the front plastic cover (needed for
tank calibration), then plug in power cord
and switch ON.
J8
P11
LS1
J2
P19
J3
J7
J1
P8
CBP8
75
Electrical
CBP15
CBP19
CBP18
CBJ1
SP00D00624 2021-04-08