Chapter 6 Maintenance and inspections
70
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 R-RUN.
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 5and 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
1Set the AUDIO SELECT CH1 and CH2 switch to AUTO.
2Set the AUDIO IN CH1 and CH2 switches to FRONT.
3Point 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
1Set the AUDIO IN CH1 and CH2 switches to FRONT.
2Set the AUDIO SELECT CH1 and CH2 switch to MAN.
3Turn the AUDIO LEVEL CH1 and CH2 controls.
Check that when they are turned clockwise, the level
displays increase.
4. Earphone and speaker inspection
1Set the VTR SAVE/STBY switch to STBY.
2Turn the MONITOR control, and check that the speaker
volume changes.
3Connect 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.
4Turn the MONITOR control, and check that the earphone
volume changes.