Sony HVL-F56AM Service Manual page 30

2. Power Level Check
1) Set the test-flash mode selection/hold switch to "TEST".
2) Charge the flash until full charge (flash-ready lamp is lit)
3) Set the power level to "1/16" and "1/2", then push the test-flash button to fire a test flash and check that the measured value of flash
meter is within the following specification.
Specification
1/16: F8.0 ±0.3 EV (F5.6
1/2: F22.0 ±0.3 EV (F16
Indication for "F/5.6
1 1.4 2 2.8 4 5.6 8 11 90
F No.
TIME
ISO
Fig. 5-6-2
4) When the specification is not satisfied, perform the "3. Power Level Adjustment".
3. Power Level Adjustment
1) Remove the label, then turn the "VR2" as shown in Fig. 5-6-3 until the measured value is within the specification of the power level
"1/16".
2) Turn the "VR3" as shown in Fig. 5-6-3 until the measured value is within the specification of the power level "1/2".
LED for flash-leady lamp
VR2
Fig. 5-6-3
3) Repeat steps 1) and 2) until the measured value of the flash meter is within the specification.
HVL-F56AM
to F8.0 )
7 3
to F22 )
7 3
"
7
VR3
5-12