Sharp 14EM4RU, Service Manual

Page: 3 / 50

3
3-1
3-2
14EM4RU
21EM4RU
ADJUSTMENT PRECAUTIONS
This model's setting are adjusted in two dif
ferent ways: through 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.
CAUTION: Make sure
TV Set is in "Normal Condition" before switch to Service Mode for adjustment.
1. Setting the service mode by the microprocessor
.
1
. Short JA 137 & JA 138 for 1 second and release to switch to the service mode position, and the
microprocessor is in input mode. (Adjustment through the I2C 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
. Short JA 137 & JA 138 for 1 second and release to switch to the normal mode (OFF) position, and the
microprocessor is in out of the service mode.
2.
Factory Presetting.
1
.Short JA 137 & JA 138 then turn "ON" the main power and release to switch to the Service Mode
position.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 8, 9, & 10.
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 JA137 & JA138 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 (GA-1A
Series type RH-IX3368CE
Attachment)
SER
VICE MODE
(1)
In the Service Mode, Key is used to select the mode in the following order
.
AGC &
GEOMETRIC
MODE
↓
AGC
T
AKE OVER POINT
(AGC)
↓
VER
TICAL
SLOPE (V
-LIN)
↓
VER
TICAL
AMP
(V
-AMP)
↓
VER
TICAL
SHIFT
(V
-CENT)
↓
HORIZONT
AL
SHIFT
(H-CENT)
↓
EAST
-WEST
WIDTH (H-SIZE)
↓
HORIZONT
AL
P
ARALLELOGRAM (EW//)
↓
EAST
-WEST
P
ARABOLA/WIDTH (P
ARA)
↓
EAST
-WEST
UPPER COR. PB (LOR(U))
↓
EAST
-WEST
LOWER COR. PB (COR(L))
↓
EAST
-WEST
TRAPEZIUM
(TRAPE)
↓
HORIZONT
AL
BOW (HB)
↓
S-CORRECTION (S-COR)
WHITE POINT
ADJ.
MODE
↓
W
.P
RED STD. W
.T
. (DRI-RS)
↓
W
.P
. GREEN STD. W
.T
.(DRI-GS)
↓
W
.P
.BLUE STD. W
.P
. (DRI-BS)
↓
W
.P
. RED W
ARM W
.P
.(DRI-RC)
↓
W
.P
. GREEN W
ARM W
.P
.(DRI-GC)
↓
W
.P
. BLUE W
ARM W
.P
.(DRI-BC)
↓
W
.P
. RED COOL
W
.P
.(DRI-R
W)
↓
W
.P
. GREEN COOL
W
.P
.(DRI-GW)
↓
W
.P
. BLUE COOL
W
.P
. (DRI-BW)
SUB
ADJ.
MODE
↓
MAX VOLUME (SUB-VOL)
↓
SUB CONTRAST
(SUB-CON)
↓
SUB COLOUR (SUB-COL)
↓
SUB BRIGHTNESS (SUB-BRI)
↓
SUB TINT
(SUB-TINT)
↓
SUB SHARPNESS (SUB-SHP)
↓
MAX HOTEL
VOLUME (HTL-VOL)
↓
HOTEL
PROGRAM NO(HTL-PRG)
↓
OSD RGB REFERENCE (RGB)
↓
BLACK LEVEL
OFFSET
R(CUT
-R)
↓
BLACK LEVEL
OFFSET
B(CUT
-B)
↓
CA
THODE DRIVE LEVEL(CDL)
FOR
W
ARD : CH DOWN KEY
REVERSE : CH UP
KEY
* ( ) means OSD display
.
FOR
W
ARD : CH DOWN KEY
REVERSE : CH UP
KEY
AGC &
GEOMETRIC
MODE
WHITE POINT
ADJ.
MODE
SUB
ADJ.
MODE
Y
-DELA
Y
ADJ.
MODE
MISC.
OPTION
MODE
IC
OPTION
MODE
OFFSET
ADJ.
MODE