Mechanism Section - Sony DCR-TRV240 Service Manual

DCR-TRV240/TRV340

5-2. MECHANISM SECTION

ADJUSTMENT
Mechanism Section adjustments, checks, and replacement of
mechanism parts, refer to the separate volume "8mm Video
Mechanism Adjustment Manual M2000 Mechanism ".
2-1. Hi8/STANDARD 8 MODE
Note1: Before performing the adjustments, check the data of page: 0,
address: 10 is "00". If not, set data: 00 to this address.
Note2: < >: DCR-TRV240, [ ]: DCR-TRV340
2-1-1. OPERATING WITHOUT CASSETTE
1) Refer to "Section 2. DISASSEMBLY" and supply the power
with the cabinet assembly removed. (So that the mechanical
deck can be operated.)
2) Connect the adjustment remote commander to the LANC jack.
3) Turn on the HOLD switch of the adjustment remote
commander.
4) Close the cassette compartment without loading a cassette and
complete loading.
5) Select page: 0, address: 01, and set data: 01.
6) Select page: C, address: 3E, set data: 01, and press the PAUSE
button of the adjustment remote commander.
7) Select page: <D>[A], address: 10, set data: 10, and press the
PAUSE button. (Note2)
8) Disconnect the power supply of the unit, and connect it again.
9) Select page: <2>[7], address: <4D>[62], and set data: <80>[02].
(Note2)
By carrying out the above procedure, the unit can be operated
without loading a cassette. (Note3)
Be sure to carry out "Processing after Operations" after
checking the operations.
Set the data of page: D, address: 10 to "<12>[02]", if the sensor
ineffective mode, forced VTR power supply ON mode is to be
used together. (Note2)
Note3: Except for the camera recording mode and VTR recording
mode.
[Procedure after checking operations]
1) Select page: 0, address: 01, and set data: 01.
2) Select page: C, address: 3E, set data: 00, and press the PAUSE
button.
3) Select page: D, address: 10, set data: 00, and press the PAUSE
button.
4) Select page: A, address: 10, set data: 00, and press the PAUSE
button. (DCR-TRV340)
5) Select page: <2>[7], address: <4D>[62], and set data: 00.
(Note2)
6) Select page: 0, address: 01, and set data: 00.
7) Disconnect the power supply of the unit.
Check this section
(Normal waveform)
Entrance side
CH1
CH2
(Trigger)
V
Exit side
Fig. 5-2-1.
2-1-2. TAPE PATH ADJUSTMENT
1. Preparations for Adjustment
1) Clean the tape path face (tape guide, capstan shaft, pinch roller).
2) Connect the adjustment remote commander to the LANC jack.
3) Turn on the HOLD switch of the adjustment remote
commander.
4) Select page: 0, address: 01, and set data: 01.
5) Select page: <2>[7], address: <4D>[62], and set data: <80>[02].
(Note2)
6) Select page: C, address: 3E, set data: 08, and press the PAUSE
button of the adjustment remote commander.
(Be sure to perform "Processing after operation" after
completing adjustments.)
7) Connect the oscilloscope to VC-276 board CN1108 via CPC-
13 jig (J-6082-443-A).
Channel 1: VC-276 board, CN1108 Pin 5
External trigger: VC-276 board, CN1108 Pin 8
8) Playback Hi8/standard 8mm alignment tape for tracking.
(WR5-1NP)
9) Check that the oscilloscope RF waveform is normal at the
entrance and exit. (Fig. 5-2-1.)
If not normal, adjust according to the separate volume "8mm
Video Mechanical Adjustment Manual M2000 Mechanism ".
10) Perform "Processing after operations", after completing
adjustment.
CN1108 of VC-276 board
Pin No. Signal Name
1 REG GND
2 N. C.
3 BPF MONI
4 N. C.
5 PB RF
6 REG GND
7 N. C.
8 RF SWP
9 N. C.
10 N. C.
[Procedure after operations]
1) Connect the adjustment remote commander, and turn on the
HOLD switch.
2) Select page: 0, address: 01, and set data: 01.
3) Select page: <2>[7], address: <4D>[62], and set data:
00.(Note2)
4) Select page: C, address: 3E, set data: 00, and press the PAUSE
button.
5) Select page: 0, address: 01, and set data: 00.
6) Remove the power supply from the unit.
5-34
Pin No. Signal Name
11 VCO
12 EVF VG
13 RF SWP
14 N. C.
15 CAP FG
16 RF MON
17 N. C.
18 REG GND
19 REG GND
20 REG GND
Table 5-2-1.