Sony Mavica MVC-FD71, Руководство по обслуживанию, Страница: 43 / 79

5-4
1-1-4. Discharge of flashlight power supply
The capacitor which is used as the power supply of flashlight is
charged with 200 V to 300 V voltage. Discharge this voltage before
starting adjustment in order to protect service engineers from electric
shock during adjustment .
Discharge procedure
1.
Turn OFF the flash switch by pressing the switch S705 on the
PK-43 board which turns OFF the flash charging lamp.
2. Fabricate the discharging jig as shown in Fig. 5-1-6 locally by
yourself. Connect the discharging jig to the positive (+) and
negative (-) terminal of the flash voltage charge capacitor.
Allow ten seconds to discharge the voltage.
1-1-5. Adjustment remote commander
(RM-95 upgraded)
To perform adjustment, the adjustment data stored in the non-volatile
memory must be rewritten using the adjustment remote commander
(RM-95 upgraded).
The adjustment remote commander uses the remote commander
signal line (LANC) to interactively communicate with the
merchandise. The page, address and up/down command data are
sent from the adjustment remote commander to the merchandise.
In return, the page, address and data are sent to the adjustment remote
commander from the merchandise.
1. Using the adjustment remote commander
1) Connect the adjustment remote commander to the LANC
terminal (CPC jig).
2) Set the NOR-ADJ (or HOLD) switch of the adjustment remote
commander to the “ADJ” (or ON) (service) position.
If the adjustment remote commander is correctly connected,
the adjustment remote commander’s LED will show the display
as shown in Fig. 5-1-7.
3) Bit value discrimination
It is necessary to discriminate between the bit values with the
data displayed on the adjustment remote commander for all
following items. Identify whether the bit value is “1” or “0”
with the use of the following diagram.
Fig. 5-1-7
Page
Address
bit3 to bit0 discrimination
bit7 to bit4 discrimination
Display on the adjustment remote commander
(Example) If “8E” is displayed on the adjustment remote
commander, the bit values for bit7 to bit4 are shown in
the
A
column, and the bit values for bit3 to bit0 are
shown in the
B
column.
R : 1k
Ω
1W
(Part code No. 1-215-869-11)
Flash circuit board
Capacitor
R
Fig. 5-1-6
Display on the
adjustment
remote
commander
0
1
2
3
4
5
6
7
8
9
A ( A )
B ( b )
C (
C
)
D ( d )
E ( E )
F ( F )
Bit values
bit3
or
bit7
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
bit2
or
bit6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
bit1
or
bit5
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
bit0
or
bit4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
A
B