Sony BVP-500, Maintenance Manual

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4-7
BVP-500
BVP-500P
4-4. Black Shading Adjustment
Notes:
• The compensation data obtained by the black shading
adjustment is not stored in the OHB File. Therefore,
when the OHB is replaced or a new OHB is installed, be
sure to perform this adjustment.
• If the shading adjustment is not completed, perform the
adjustment again following the message displayed on the
viewfinder or MSU.
If the re-adjustment still is not completed, consult Sony
service representative.
Preparations:
• Connect the waveform monitor to the MONITOR connector.
• S650 (MONITOR SELECT)/IF-538 panel
→
VBS
Test Point
: MONITOR connector
Iris of the lens : CLOSE
Adjustment Procedures:
1. Set the DISPLAY switch/rear panel to MENU while
pushing up the MENU SELECT switch to ENTER.
2. Set the menu as follows and adjust the auto black
shading. Throw the MENU SELECT switch to
ENTER to execute.
MENU : Maintenance
PAGE : Auto Setup (M4)
ITEM : Black Shading
3. Confirm the “OK” is displayed on the viewfinder or
MSU. If the error message is displayed, perform the
adjustment again following this message.
Message and its meaning
BLACK:OK : Adjustment correctly completed.
LEVEL TOO HIGH : Lens closing does not operate fully,
and so on.
TIME LIMIT : Black shading adjustment could not
be completed within the specified
number of attempts.
OVER FLOW : The difference between the refer-
ence value and the current value is
too great, and exceeds adjustment
range. Adjustment is then not
completed.
4. Confirm the carrier level satisfies the specification on
the waveform monitor.
Specifications: Less than 2 IRE (for NTSC)
Less than 14 mV (for PAL)
4-4. Black Shading Adjustment