Sony CD Mavica MVC-CD250, Service Manual

Page: 101 / 125

5-45
MVC-CD250/CD400
5-2. SERVICE MODE
2-1. ADJUSTING REMOTE COMMANDER
The adjusting remote commander is used for changing the calcu-
lation coefficient in signal processing, EVR data, etc. The adjust-
ing remote commander performs bi-directional communication
with the unit using the remote commander signal line (LANC).
The resultant data of this bi-directional communication is written
in the non-volatile memory.
1. Used the Adjusting Remote Commander
1) Connect the adjustment remote commander to the following
connector or jack.
• CN714 of SY-76 Board via CPC-9 jig (J-6082-393-C)
• LANC (ACC) jack
2) Set the HOLD switch of the adjusting remote commander to
“HOLD” (SERVICE position).
3) Turn on the power with the POWER switch of the unit.
If it has been properly connected, the LCD on the adjusting re-
mote commander will display as shown in Fig. 5-2-1.
• Changing the address
The address increases when the FF (
M
) button is pressed,
and decreases when the REW ( M ) button is pressed. There
are altogether 256 addresses, from 00 to FF.
• Changing the data (Data setting)
The data increases when the PLAY (
N
) button is pressed,
and decreases when the STOP ( x ) button is pressed. There
are altogether 256 data, from 00 to FF.
• Writing the adjustment data
The PAUSE button must be pressed to write the adjustment
data in the nonvolatile memory. (The new adjustment data
will not be recorded in the nonvolatile memory if this step is
not performed)
2. Precautions upon Using the Adjusting Remote Com-
mander
Mishandling of the adjusting remote commander may erase the
correct adjustment data at times. To prevent this, it is recommended
that all adjustment data be noted down before beginning adjust-
ments and new adjustment data after each adjustment.
4) Operate the adjusting remote commander as follows.
• Changing the page
The page increases when the EDIT button is
pressed, and decreases when the EDIT SEARCH – button is
pressed. There are altogether 16 pages, from 0 to F.
Fig. 5-2-1
0 : 00 : 00
Page Data Address
Table 5-2-1
Hexadecimal
0 1 2 3 4 5 6 7 8 9 A B C D E F
notation
LCD Display
0 1 2 3 4 5 6 7 8 9 A b c d E F
Decimal notation
0 1 2 3 4 5 6 7 8 9 1011 12 1314 15
conversion value