Dcu 220 Testing; Configuring Operation; Testing Hardware Faults Or Software Faults - Bosch DCU 220 Repair Instructions

6.

DCU 220 Testing

6.1

Configuring operation

Operation of the DCU 220 can also be configured
by the end customer. The functions of the programs
cited below are described in the operating manual
DCU 220 (1 689 989 221) and in the User Handbook
(1 689 989 235):
R
Power options
R
Calibrating touch screen
R
Windows update
R
Information in the case of any faults
R
Switching functions on and off (e.g. WLAN)
6.2

Testing hardware faults or software faults

i
There are various procedures, depending on the type of fault. Consult the following table for the recommended
procedures.
Fault description Possible cause
R No power supply
DCU 220 cannot be
R Power supply unit defective
switched on
R Battery defective
R Bluetooth USB stick inserted
Black/blue screen
R Windows damaged
or system cannot be
R Display defective
booted or show no
R Mainboard defective
display
R Hard disk not plugged in properly,
DCU 220 remains in
hard disk defective
its boot menu
R Hard disk missing
R Installed virus scanner slows the
Low performance
system right down
R Installation of third-party software
R Defective operating system or de-
fective driver
R WLAN is switched off
No WLAN
R Defective or wrongly configured
WLAN module DCU 220
R Defective incorrectly configured
WLAN module on the opposite
side
R WLAN computer incorrectly con-
figured or defective
R Bluetooth is switched off
No Bluetooth
R Defective or incorrectly config-
ured Bluetooth module DCU 220
R Defective or incorrectly config-
ured Bluetooth module on the op-
posite side
R Speaker set to quiet or OFF
No audio signal.
R Speaker defective
Tab. 1: Testing hardware faults or software faults
Robert Bosch GmbH
Recommended procedure
1. Check if voltage, power supply unit and storage
battery are OK (see LED status).
2. Install a loaded and tested hard disk.
1. Remove Bluetooth USB stick.
2. Install a loaded and tested hard disk.
3. Install hard disk of defective DCU 220 into test-
ed DCU 220.
4. If there is a software fault (step 2 not successful),
then perform Recovery.
1. Check installation of hard disk
2. Install a loaded and tested hard disk.
1. Uninstall third-party software.
2. Restore operating system
(Recovery process)
1. Enable WLAN (switch off the flight mode).
2. Test and reset WLAN signal and router.
3. Test and reset WLAN module DCU 220.
1. Enable Bluetooth (switch off flight mode).
2. Test and reset Bluetooth signal and Bluetooth
router.
3. Test and reset Bluetooth module DCU 220.
4. Install SP1 (only with system version 1.4,
DVD is in scope of delivery)
1. Switch on speaker.
2. Connect up external speaker.
| DCU 220 | 27 en
Troubleshoot-
ing chapter
6.2.1
6.2.2
6.2.1
6.2.2
|
1 689 975 264 2015-06-02