Sharp CX51TXZ, Service Manual

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3
3-1 3-2
CX51TXZ
ADJUSTMENT PRECAUTION
This model’s setting are adjusted in two different ways: though the I 2 C bus control and in the conventional analog
manner. The adjustments via the I 2 C bus control include preset-only items and variable data.
1. Setting the service mode by the microprocessor.
1
Short TP1001 and TP1002 to switch to the service mode position, and the microprocessor is in input
mode. (Adjustment through the I
2
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
Disconnect TP1001 and TP1002 to switch to the normal mode (OFF) position and the microprocessor is
in out of the service mode.
2. Factory Presetting.
1
Short TP1001 & TP1002 to switch to the service mode position 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 pages 4-6.
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 short TP1001 and TP1002 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.
3. For reference please check with memory map (21SN Series type RH-IX3135CE Attachment)
■
SERVICE MODE
(1) In the Service Mode, Key is used to select the mode in the following order.
FORWARD : CH DOWN key
REVERSE : CH UP key
FORWARD : CH DOWN key
REVERSE : CH UP key
STEP 2
STEP 1
R-CUT OFF
G-CUT OFF
B-CUT OFF
KEY
R-CUT OFF
G-CUT OFF
B-CUT OFF
G-DRIVE
B-DRIVE
UP
1 KEY
2 KEY
3 KEY
7 KEY
8 KEY
DOWN
4 KEY
5 KEY
6 KEY
F/B KEY
0
KEY
CUT-OFF/
BKGD mode
LATERAL mode
(R, G, B-CUT OFF)
G-DRIVE
B-DRIVE
CUT-OFF/BKGD mode
3-sec time out
-/-- KEY
3-sec time out
V-AMP 50 Hz (V-AMP50)
V-LINE 50 Hz (V-LINE50)
S-CORRECT 50 Hz (V S-CORR50)
V-PHASE 50 Hz (V-CENTER50)
H-PHASE 50 Hz (H-CENTER50)
SECAM R-Y (R-Y)
SECAM B-Y (B-Y)
50 Hz ADJUST mode COLOUR ADJUST mode
RASTER
mode
CUT OFF
mode
50 Hz ADJUST
mode
60 Hz ADJUST
mode
NVM
SUB ADJ
mode
COLOUR ADJUST
mode
MPX
ADJUST
OTHERS mode
MPX / STEP 2 SWITCH TO STEP 1 : LANG KEY (2 Sec)
Y-DL ADJUST mode
* ( ) means OSD display.