JVC GR-D750UC, Руководство по обслуживанию

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1-20 (No.YF173)
„ Jig connector diagrams
Fig.4-2-3
„ Conversion Connector
Fig.4-2-4
4.3 MECHANISM COMPATIBILITY ADJUSTMENT
4.3.1 Tape pattern adjustment
NOTE:
Prior to the adjustment, remove the CASS.COVER.
(1) Play back the compatibility adjustment tape.
(2) While triggering the HID, observe the waveform of
ENV_OUT.
(3) Set the manual tracking mode (ATF OFF).
(4) Confirm that the waveform is entirely parallel and straight,
and free from remarkable level-down, through the tracking
operation.
Make the confirmation as follows if necessary.
(5) If level-down is observed on the left hand side of the
waveform, straighten the level by turning the GUIDE
ROLLER (SUP).
If level-down is observed on the right hand side of the
waveform, straighten the
level by turning the GUIDE ROLLER (TU).
(6) After the adjustment, try the unloading motion once, and
confirm that the waveform is flat when the tape has been
played back again.
(7) Play back the self-recording.
(8) Confirm that the waveform is flat.
Fig.4-3-1
Fig.4-3-2
4.4 ELECTRICAL ADJUSTMENT
Electrical adjustment is performed by using a personal computer
and software for SERVICE SUPPORT SYSTEM. Read
README.TXT file to use the software properly.
As for the connection of cables, see "4.2 JIG CONNECTOR
CABLE CONNECTION".
13. IF_TX
28. IF_RX
ADDITIONAL WIRE
20
19
18
17
16
15
14
13
12
11
MVD
V_OUT
-
-
-
CVF_G
COM_VF
GND
FS_PLL
GND
HID
ATFI
MAIN_VCO
ENV_OUT
IF_RX
IF_TX
AL_2.8VSYS
IRU
KENTO
KENTO2
NC
AL_2.8VSYS
IF_RX
NC
HID
NC
NC
-
-
NC
NC
NC
NC
NC
NC
NC
NC
IF_TX
ENV_OUT
NC
GND
GND
CVF_G
-
NC
NC
NC
NC
NC
NC
10
9
8
7
6
5
4
3
2
1
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
JIG CONNECTOR CABLE (YTU93106B)
MAIN CN102
JIG CONN. BOARD
(PIN NO.)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
KENTO2
IRU
IF_TX
ENV_OUT
ATFI
GND
GND
CVF_G
-
V_OUT
KENTO
AL_2.8VSYS
IF_RX
MAIN_VCO
HID
FS_PLL
COM_VF
-
-
MVD
1
2
3
4
5
6
7
8
9
10
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
11
12
13
14
15
16
17
18
19
20
Flatten the waveform.
Misalignment of guide roller
height on the take-up side
Misalignment of guide
roller height on the
supply side
ENV_OUT
HID