Chapter 6 Maintenance and inspections
6-1-3 Inspecting the VTR unit
Perform all the steps outlined in section “1. Tape travel inspection” through section “4. Earphone and speaker inspection” one after the other.
1.Tape travel inspection
1Set the VTR SAVE/STBY switch to SAVE, and check that the VTR SAVE lamp inside the viewfinder lights.
2Set the VTR SAVE/STBY switch to STBY, and check that the VTR SAVE lamp goes off.
3Set the TCG switch to
4Set the DISPLAY switch to CTL.
5Press the unit’s REC START button, and check that:
≥The tape reels rotate.
≥The figure shown on the counter display changes.
≥The REC lamp inside the viewfinder lights.
≥The RF and SERVO displays do not appear in the display window.
6Press the unit’s REC START button again. Check that the tape stops and the REC lamp inside the viewfinder goes off.
7Use the lens VTR button to check the same operations as in steps 5 and 6.
8Press the RESET button, and check that “00:00:00:00” appears on the counter display.
9Set the LIGHT switch to ON, and check that the display window illuminates.
10 Press the REW button, and after the tape has been rewound for a few seconds, press the PLAY/PAUSE button.
Check that the tape is recorded, played back and rewound properly.
11 Press the FF button, and check that the tape is fast forwarded properly.
2.Automatic audio level adjustment function inspection
1 Set the AUDIO SELECT CH1 and CH2 switch to AUTO.
2 Set the AUDIO IN CH1 and CH2 switches to FRONT.
3 Point the microphone connected to the MIC IN jack at a suitable sound source, and check that the changes in the level displays for both CH1 and CH2 reflect the changes in the strength of the sound.
3.Manual audio level adjustment function inspection
1 Set the AUDIO IN CH1 and CH2 switches to FRONT.
2 Set the AUDIO SELECT CH1 and CH2 switch to MAN.
3 Turn the AUDIO LEVEL CH1 and CH2 controls.
Check that when they are turned clockwise, the level displays increase.
4. Earphone and speaker inspection
1 Set the VTR SAVE/STBY switch to STBY.
2 Turn the MONITOR control, and check that the speaker volume changes.
3 Connect the earphones to the PHONES jack.
Check that the sound from the speaker is muted, and that the microphone’s sound is heard in the earphones.
4 Turn the MONITOR control, and check that the earphone volume changes.
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