Adjustment Precautions - Sharp CX68KF5 Service Manual

ADJUSTMENT PRECAUTIONS

This model's setting are adjusted in two different ways: through the I
conventional analog manner. The adjustments via the I
and variable data.
1. Setting the service mode by the microprocessor.
1 Make a short-circuit JA373 and JA374, enter into the service mode. (Adjustment through
2
the I C bus control). (Use JWS Key to set as well).
2 Press the CH DOWN / UP key on the remote controller to get ready to select the mode
one by one.
3 Press the CH DOWN / UP key on the remote controller to select the modes reversibly
one by one.
4 Using the VOLUME UP/ DOWN key on the remote controller, the data can be modified.
5 When the short circuit between JA373 and JA374 is cut off, it will be released from the
service mode.
2. Factory Presetting.
1 Make a short-circuit JA373 and JA374 and turn on the main power switch. Initial values
are automatically preset, only when a new EEPROM is used (Judge with the first 4
bytes).
2 The initial data are preset as listed in page.
3 Make sure the data need modify or not (Initial data).
Note: Once the chassis has been assembly together and ready to be POWER ON for the
FIRST TIME, make sure to make a short-circuit JA373 and JA374 to switch to the
service mode position first and then turn on the main power switch. (See 2-1 above).
Precaution: If haven't done this initiation, it may possibly generate excessive Beam
current.
2
C bus control and in the
2 C bus control include preset-only items
3-1
SERVICE MODE
1.) In the Service Mode, Key is used to select the mode in the following order.
SERVICE MODE 1
RASTER CUT OFF 50Hz ADJ.
MODE MODE MODE
SUB 2 ADJ. 60 Hz ADJ. SUB 1 ADJ.
MODE MODE MODE
Press the MENU button Press the MENU button
at the remote controller, again at the remote controller,
it will enter into it will jump back to
Service Mode Option. Service Mode 1.
SERVICE MODE
OPTION
CUT OFF/ BKGD MODE
3 sec. TIME OUT
R-CUT OFF
G-CUT OFF
B-CUT OFF
CUT OFF
DATA INITIAL
LENGTH DATA
63 - 255 63 LATERAL MODE
(R, G, B-CUT OFF)
KEY
R-CUT OFF
G-CUT OFF
B-CUT OFF
G-DRIVE
B-DRIVE
Press service/ language for 2 sec,
it will enter into service mode 2.
SERVICE MODE 2
Press service/ language for 2 sec again,
it will jump back to service mode 1.
FORWARD : CH DOWN KEY
REVERSE : CH UP KEY
3 sec. TIME OUT
CUT OFF
G-DRIVE
BKGD
B-DRIVE
MODE
"–/––" DRIVE
DATA INITIAL
LENGTH DATA
0 - 127 63
UP DOWN
1 KEY 4 KEY
2 KEY 5 KEY
3 KEY 6 KEY
7 KEY F/B KEY
8 KEY 0 KEY
3-2