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2.12.2 Before Adjustments
Table 2-12-1 shows the adjustments to be enforced after servicing.
2.12.5
Adjustment Item
Linearity
Servicing
Adjustment
Note 1
Drum replacement
Required
Note 1
Required
Required
IC901 replacement
(PRE/REC amp on
Not required
P/R & MDA board)
IC501 replacement
Not required
(PB EQ on DV Main
board)
DV Main board
Not required
replacement
Note 2
2.12.3 Adjustment Setup
As shown in Fig.2-12-2 below, connect the connector cable to
CN104 on the DV MAIN board and then connect it to the PC
cable.
Switch
2-33
2-34
3.6.7
3.6.8-3
Play Switching
Error Rate (PB
Point Adjustment
EQ) Adjustment
Required
Required
Not required
Check
Not required
Check
Not required
Required
Required
Required
Table 2-12-1
FS PLL
VCO DC
A GND
HID
ENV OUT
<JLIP>
Connector cable
PTU94018A
Fig. 2-12-2 Adjustment Setup
Note 1 : Check is required after servicing or re-
3.6.8-1
REC Current
placement related to the drum, TU/
Adjustment
SUP guide rails or tension.
Note 2 : After having replaced the DV Main
Required
board, be sure to write the original
data in the EEPROM (IC103) of the
new board. If the original data cannot
Not required
be written due to communication fail-
ure, mount the original EEPROM to
Required
the new board.
The following data are written in the
Not required
EEPROM (IC103) on the DV MAIN
board.
Required
Adjustment software
RS-232C port
JVC menu
Personal computer
PC cable
QAM0099-001
• EVR adjustment value data
• Hour meter
• Warning history
• IEEE1394 ID code
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