Bang & Olufsen BeoCenter 1, Repair Manual

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Access to Service Mode
Select a SETUP menu.
Beo1: Press STOP STOP GO within 3 seconds.
Beo4: Press 0 0 GO within 3 seconds.
Select ordinary menu operation to leave Service Mode.
Operation in Service Mode.
Beo1 Beo4 Activity
DISPLAY EXIT Removes the menus
GO GO - Selects the sub menu to the menu line where the cursor
is placed
- Stores the selected values and returns to the SERVICE MENU
- Deletes error codes in the MONITOR INFORMATION menu
and returns to the SERVICE MENU
m m
Moves the cursor up and returns to the previous menu
p p
Moves the cursor down and selects a sub menu in special
occations
l n l n
Selects new values in the menus
See the section “Brief Operation Guide” for general information on operation.
ADJUSTMENTS
Important!
When replacing the electrical chassis including PCB1 AV signal processing, PCB3
Video output, PCB4 Power supply & defl ection, and PCB6 Main microcomputer, to
avoid loss of data the old EEPROM 6IC6 must be moved to the new PCB6.
At the bottom left-hand corner of PCB1, AV signal processing, there is a small
label where the adjustment values for TUNER TAKEOVER, IF ADJUST and FM
SOUND ADJUST are written. These values must be written into the old EEPROM.
When replacing PCB6 the old EEPROM 6IC6 also must be moved to the new PCB6.
Stand
To be adjusted when the gear box with the motor stand control PCB80 has been
mounted in the TV, or if any part of the electrical chassis that contains PCB6 with
the EEPROM 6IC6 has been replaced.
- Enter Service Mode and select the STAND line.
- Press GO , when CALIBRATION OK is displayed the centre position of the motorized
stand has been found.
For the following adjustments a standard 4:3 test pattern (e.g. Philips) should be
used.
Focus
- Adjust to optimum focusing of the vertical lines as viewed approx. 10cm/4” from
the edge of the screen by means of 4R485 (FOCUS).
5.2 Adjustments, English