Fig. 11 Adjusting Ambient Calibration Disc

a. With the Camera off the Tester, remove the Front Plate/Lens Panel and replace it with a modified Front Plate as shown in Fig. 10. (See NPI 600AM #92-30 for more information.)

b. Using a dental pick, narrow-bladed screwdriver or other suitable tool, adjust the ambient calibration disc. Move the ambient calibration disc clockwise (CW) to decrease the reading or counterclockwise (CCW) to increase the reading (Fig. 11).

c. Replace the original Front Plate and retest the camera. Readjust the ambient calibration disc if necessary.

d. If the ambient calibration disc adjustment cannot bring the reading into specification, disassemble the camera down to the shutter level and examine the photocell area. Be certain the photocell is properly seated. Reassemble the camera and retest. Readjust the ambient calibration disc if necessary.

NOTE: If the Strobe Exposure readings are out of spec, perform the ZLS Output test

before making the adjustment below. If ZLS reading is out, replace the strobe

a. With the Camera off the Tester, remove the Front Plate/Lens Panel and replace it with a modified Front Plate as shown in Fig. 10. (See NPI 600AM #92-30 for more information.)

b. Using a dental pick, narrow-bladed screwdriver or other suitable tool, adjust the IR calibration wedge. Move the IR calibration wedge counterclockwise (CCW) to decrease the reading or clockwise (CW) to increase the reading (Fig. 12).

c. Replace the original Front Plate and retest the camera. Readjust the IR calibration wedge if necessary.

d. If the IR calibration wedge adjustment cannot bring the reading into specification, disassemble the camera down to the shutter level and examine the photocell area. Be certain the photocell is properly seated. Reassemble the camera and retest. Readjust the IR calibration wedge if necessary.

Fig. 12 Adjusting IR Calibration Wedge