Tape Path Adjustment - Sony DCR-HC39E Service Manual
Digital video camera recorder
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- Operating manual (123 pages) ,
- Service manual (35 pages) ,
- Service manual (59 pages)
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4-4. Tape Path Adjustment
4-1.
Adjustment Preparation
1)
Clean the tape running surface (tape guides, drum, capstan,
pinch roller) referring to section 2-2.
2)
Connect the adjustment remote commander (Ref. No. J-13) to
the LANC terminal of the machine. Set the HOLD switch to
ON.
3)
Connect an oscilloscope to CN1004 of the VC-312 board via
the CPC-7 jig (J-6082-382-A). (In the case of DCR-TRV22K)
Oscilloscope CH1: VC-312 board CN1004 pin2 (Note 1)
EXT. TRIG: VC-312 board CN1004 pin4
Note 1: Connect CN1004 pin2 and pin6 (GND) with a 75-ohm
resistor (1-247-804-11).
4)
Play back the tracking alignment tape (XH 2-1) (Ref. No. J-5).
5)
Select page: 0, address: 10 and set data: 00. (Note 2)
6)
Select page: 3, address: 26 and set data: 31, and press the PAUSE
button. (Note 2)
7)
Select page: 3, address: 33 and set data: 08. (Note 2)
8)
Confirm that the RF waveform on the scope is flat at both of
the entrance side and the exit side. (Refer to Fig. 4-4A.)
If the RF waveform is not flat either at the entrance side or the
exit side (refer to Fig. 4-4 B and C), perform the adjustment of
section 6-2 and later.
9)
When the required conditions of step 8) are satisfied, perform
[Required Work upon Completion of Adjustment] as described
below upon completion of adjustment/check.
[Required Work upon Completion of Adjustment]
1)
Connect the adjustment remote commander (Ref. No. J-13) to
the LANC terminal of the machine. Set the HOLD switch to
ON.
2)
Select page: 0, address: 10 and set data: 00. (Note 2)
3)
Select page: 3, address: 26 and set data: 00, and press the PAUSE
button. (Note 2)
4)
Select page: 3, address: 33 and set data: 00. (Note 2)
Note 2: Page and address numbers differ depending on each model.
Please to Service Manual of the respective models. Page and
address numbers of DCR-TRV22K are shown in this manual.
DV MECHANICAL ADJUSTMENT MANUAL VII
Envelope must be flat
CH1
CH2
(Trigger)
3.3 msec
Entrance side
T reel table
Capstan
TG7 guide
TG6 guide TG5 guide
Tape must run while maintaining contact with the
upper flange. There must not exist a large tape curl.
Capstan
TG7
TG6
TG5
— 49 —
Fig. 4-3
Exit side
Normal
A
Entrance side is defective
B
Exit side is defective
C
Fig. 4-4
S reel table
Pinch roller
Drum
TG3 guide
TG4 guide
TG2 guide
(tension regulator)
FWD
Tape
TG4
TG3
TG2
Fig. 4-5
TG1 guide
TG1
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