Pentax 77420 Service Manual page 61

④ Click [Execute] button --- Mirror will be activated one time.
Adjustment will be executed in order from [BC → BV → AGC] that are selected section③.
4-2-1. BC level adjustment
③ Below message screen will be displayed. Follow the message on screen.
④ Attach the DC coupler and DC cable to the camera.
⑤ Set the connected DC power supply to DC6.0V(3A).
⑥ Click [OK] to execute adjustment.
⑦ When adjustment is completed, [OK] will be displayed.
⑧ Disconnect DC cable and connect the AC adaptor to the camera.
4-2-2. BV adjustment
① Attach F8 set ring to the camera and set D20(D20-01) at full open.
[Caution] Set the camera at center of Light source window.
[Caution] Cover the camera and Light source window by dark curtain to avoid unnecessary light.
② Click [OK] to execute adjustment.
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