Maintenance And Service - Bosch GML 20 Professional Instruction Manual

OBJ_BUCH-1181-002.book Page 18 Wednesday, December 19, 2012 2:18 PM
18 | English
Time Indication
The construction site radio is equipped with a time indication
with separate power supply. When back-up batteries with suf-
ficient capacity are inserted in the back-up battery compart-
ment (see "Inserting/Replacing the Back-up Battery",
page 15), the time can be stored even when the construction
site radio is disconnected from the A/C power supply or the
battery.
Setting the Time
– To set the time, press and hold the "Clock" button 18 until
the hours indication flashes in the time indication display
n.
– Press the "Seek +" button 21 or the "– Seek" button 23
until the correct hour setting is indicated.
– Press the "Clock" button again, so that the minutes indica-
tion flashes in the time indication display n.
– Press the " Seek +" button 21 or the "– Seek" button 23
until the correct minute setting is indicated.
– Press the "Clock" button a third time to store the time set-
ting.
Energy Saving Mode
To save energy, you can switch the time indication in display
27 off.
For this, press and hold the On/Off button 26 when switching
off audio operation (see "Switching Audio Operation On/Off",
page 15), until there is no indication on the display.
To switch the time indication on again, press the On/Off but-
ton 26 once.
Working Advice
Recommendations for Optimal Handling of the Battery
Protect the battery against moisture and water.
Store the battery only within a temperature range between
0 °C and 50 °C. As an example, do not leave the battery in the
car in summer.
A significantly reduced working period after charging indi-
cates that the battery is used and must be replaced.
Observe the notes for disposal.
Troubleshooting Causes and Corrective
–
Measures
Cause Corrective Measure
Construction site radio inoperative
No power supply Properly insert mains plug or
battery (completely)
Construction site radio too Wait until the construction
warm or too cold site radio has reached oper-
ating temperature
Construction site radio inoperative on A/C power supply
Mains plug or cord defective Check mains plug and cable
and have repaired as re-
quired
1 609 92A 01U | (19.12.12)
Cause Corrective Measure
Construction site radio inoperative on DC power supply
Battery contacts Clean the battery contacts
contaminated (e.g. by inserting and remov-
ing the battery several times)
or replace the battery
Battery pack defective Replace the battery
Battery too warm or too cold Wait until of the battery has
(temperature warning indica- reached operating tempera-
tor k lit)
ture
Power supply to external devices inoperative
Mains plug not plugged-in Plug mains plug in (complete-
ly)
12 V power supply inoperative
No fuse 32 inserted Insert fuse 32
Fuse 32 blown Replace fuse 32
Internal thermal fuse Remove external device and
blown/actuated allow construction site radio
to cool down
Construction site radio suddenly inoperative
Mains plug or battery not Plug in mains plug or battery
properly or completely properly or completely
plugged in
Software error To reset the software, pull the
mains plug and remove the
battery; wait 30 seconds,
then insert mains plug and
battery again
Bad radio reception
Interference from other de- Position the construction site
vices or insufficient set-up lo- radio at another location with
cation better reception or with
greater clearance to other
electronic devices or socket
outlets.
Time indication faulty
Back-up batteries of clock Replace back-up batteries
empty
Back-up batteries incorrectly Insert back-up batteries cor-
inserted (wrong polarity) rectly
When the corrective measures do not eliminate an error,
please contact an authorised service agent for Bosch power
tools.

Maintenance and Service

Maintenance and Cleaning
 The mains cable is provided with a special safety con-
nection and may only be replaced by an authorised ser-
vice agent for Bosch power tools.
If the construction site radio should fail despite the care taken
in manufacture and testing, repair should be carried out by an
authorised customer services agent for Bosch power tools.
Bosch Power Tools