DCR-TRV140/TRV140E/TRV140M
2-4-3. No.7 Guide (TG7) Adjustment2-5. CHECKS AFTER ADJUSTMENTS
1) Playback a tape in REV mode.2-5-1. Waveform Build-up Check
2) Confirm that tape slack dose not occur in betw1) een the guidePlayback the SW/OL standard tape.
No.6 (TG6) 1 and capstan 2. If the tape slack is found, turn2) Eject the tape once, insert and load the tape.
the height adjustment scre4 of the Guide No.7 (TG7) w 33) Start playing back the tape and confirm that the RF waveform
until tape slack is removed.builds up in three seconds with flat envelope. Confirm at this
3) Playback a tape in normal mode. Confirm that tape slactime thak doset tape slack dose not occur near pinch roller.
not occur in between the guide No.7 (TG7) 3 and capstan 2.4) Playback the tape in CUE/REV and FF/REW modes respec-
(Specification = 0.5 mm or less) If the tape slactik of morvely. Confe thanirm that the RF waveform builds up in three sec-
0.5 mm is found, turn the height adjustment scr4 until the ewonds with f lat envelope. Confirm at this time that tape slack
slack is 0.5 mm or less. Playback a tape in REV mode anddose not occur near pinch roller.
confirm that tape slack occurred in between the guide No.65) Repeat the check items 2) to 5) again.
(TG6) 1 and capstan 2 is 0.3 mm or less, the adjustment is
complete.
2 CapstanCapstan
1 No.6 guideNo.7 guideNo.6 guide
4 TG7 nut(TG7)
(TG6)(TG6)
3 No.7 guide
(TG7)
Tape slackTape slack
Fig. 5-2-10
Fig. 5-2-8
2-4-4. CUE, REV Waveforms Check2-5-2. Tape Path Check
1) Playback the SW/OL standard tape (WR5-2D) in REV mode.1) Insert a thin video tape such as P6-120MP (NTSC) or P5-
Confirm that pitches between the peaks of the w120MP (Paveform areAL). Playback the thin tape. Confirm that there is
equally spaced for 5 seconds or longer.no clearance or curl of 0.3 mm or more at the following points:
The pitches are not equally spaced, perform section O2-4-2.Upper flange of guide No.3, upper flange of guide No. 6, up-
Tape path Adjustment� and section O2-4-3. No.7 Guide (TG7)per and lower flanges of guide No.7.
Adjustment�.2) Confirm that there is no clearance or curl of 0.3 mm or more at
2) Playback the SW/OL standard tape in CUE mode.each tape guide when the FF button is pressed from the play-
Confirm that pitches between the peaks of the wback mode to enter the CUE modeaveform are, and when the REW button
equally spaced for 5 seconds or longer.is pressed from the playback mode to enter the REV mode.
The pitches are not equally spaced, perform section O2-4-2.
Tape path Adjustment�.
No.1 guide
(TG1)
No.6 guideNo.3 guide
abcd(TG6)(TG3)
No.7 guide
(TG7) Pinch roller
Drum
Fig. 5-2-9
Capstan
Fig. 5-2-11
5-33 |
ACEC
