Bang & Olufsen BeoCenter 1, Repair Manual

Page: 30 / 545

5.8 Service mode, English
RESET TO DEFAULT
When this line is selected the settings will be defi ned.
- All TV, satellite and radio programmes are cleared.
- The V.TAPE and AV sockets are set to NONE.
- In the PICTURE ADJUSTMENT service menu the values for brilliance, color and
contrast are set to default.
- All programme lists are cleared.
- The TV SETUP TUNE menu (if there is no satellite receiver) will be shown the fi rst
time the TV is switched on.
- OPTION is set to 2.
- The theft protection setup is not changed.
When RESET TO DEFAULT is selected a text “PLEASE WAIT” is displayed. While the
text is displayed no operation must be done. When the text disappears Service
Mode is exited.
SERVICE MENU
TV SERVICE MENU
In TUNER SYSTEM it is possible to set only relevant tuner systems to ON (only multi
standard TV’s). This is done to reduce the tuning time.
AFC ON/OFF is used in connection with adjustments but it may also be useful in
other situation.
The AFC is set to ON when the TV has been turned off by means of the mains
switch.
LOW TUN RANGE 45
HIGH TUN RANGE 860
LOWER BAND LIMIT 170
UPPER BAND LIMIT 450
VHF-1 CONSTANT 162
VHF-2 CONSTANT 148
UHF CONSTANT 49
These items are for factory use.
TUNER TAKEOVER 27
IF ADJUST 63
AFC STATUS I/L
FM SOUND ADJUST 14
These items are described in the section on adjustments.
RADIO SERVICE MENU
- Radio software version number.
With TESTMODE ON:
- The update routine stops.
- Sets the FM bandwidth fi lter to wide.
- Sets the search level to “First Stop”, meaning that the tuning will stop on more
weak stations during test mode than in normal operation.
- Removes 20 dB damping on strong stations.