Elenberg 2910F, STV-2937 Schematic
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ELENBERG 2910F, CAMERON STV-2937
SERVICE MANUAL
1. Caution……………………………………………………………2
2. Specification………………………………………………………6
3. BOM List ……………………… …………………………………9
4. Alignment Procedure………………………………………….…35
5. Block Diagram……………………………………………………39
6. Schematic Diagram………………………………………………40
7. PCB Layout………….……………………………………………41
8. Explode View Diagram……………………………………………43
DT-2977
This manual is the latest at the time of printing, and does no
include the modification which may be made after the printing, by
the constant improvement of product.
TCL M113A chassis alignment instruction
Enter factory mode in production line
Simply press the D-mode key on the factory remote handset.
Enter service mode
Press and hold the VOLUME DOWN key tightly on the unit until minimum level and don’t release the
VOLUMN DOWN key, then press the DISPLAY key on the remote handset.
“D” letter on the screen indicated that the factory mode was entered. Now you can use the shortcut key
to access the factory menu. All change in factory data will save in EEPROM automatically
Note:
1. You can disable the D-Mode key (on factory remote handset) by change “BIT-0” of “OPT” to “0”.
If the D-Mode key was disabled, you can’t enter D-Mode by the D-mode key on the factory remote
(but you can still enter service mode). It is suggested to disable the D-Mode key before the set
leave the factory.
2. On the factory remote handset, you can find the “I²C” key. It can cut off the I2C control from the
CPU to other IC. This is only useful when automatic adjustment of white balance.
3. All system data in menu of “key 6” must keep unchanged when servicing. Otherwise, the set may
not work properly.
Setting method:
No Adjustment
Items
1 Screen
voltage
2 Focus voltage ------------ Cross hatch
3 Vertical
geometry for
PAL system
(Key 1)
Data Name (default
value inside blanket)
------------ “IRGB cut off”
HIT(11)
VP50(04)
VLIN(0B)
VSC(09)
VBLK(00)
VCEN(1B)
OSDH(1F)
DPC43(00)
Conditions and
input signal
must set to 80 (all
Input a PAL cross
hatch pattern.
pattern)
pattern.
Setting method (need enter D-mode)
Press “MUTE” key on the remote handset
and the screen will become a horizontal
line. Then adjust the “screen” VR on the
flyback until the horizontal line can just
be seen (minimum visible intensity).
Adjust the “focus” VR on the flyback
until the screen becomes clear.
Adjust HIT for vertical amplitude.
Adjust VP50 for vertical position.
Adjust VLIN for vertical linearity.
Adjust VSC for vertical S-correction
(Normally use default value)
Adjust VCEN for vertical position
Adjust OSDH for OSD position
Same as DPC, adjust it on EXPAND 4:3
mode.
4 Vertical
p
geometry for
NTSC system
(Key 1)
5 Horizontal
geometry for
PAL system
(Key 2)
6 Horizontal
geometry for
NTSC system
(Key 2)
HITS(11)
VP60(02)
VLIS(0A)
VSS(08)
VBLK(00)
VCEN(1C)
OSDHS(1D)
DPC43S(00)
HPOS(0C)
DPC(23)
KEY(20)
WID(22)
ECCT(09)
ECCB(0A)
VEHT(04)
HEHT(04)
HPS (10)
DPCS(1F)
KEYS(1F)
WIDS(22)
ECCTS(0E)
ECCBS(10)
VEHTS(04)
HEHTS(04)
Input a NTSC
cross hatch
pattern.
Input a PAL cross
hatch pattern with
black and white
background.
Input a NTSC
cross hatch
attern with black
and white
background.
Adjust HITS for vertical amplitude.
Adjust VP60 for vertical position.
Adjust VLINS for vertical linearity.
Adjust VSS for vertical S-correction
(normally use default value)
Adjust VCEN for vertical position.
Adjust OSDHS for OSD position
Same as DPC, adjust it on EXPAND 4:3
mode.
Adjust HPOS for horizontal position.
Adjust DPC, KEY, ECCT and ECCB until
the vertical line at left and right side of the
picture become straight.
Adjust WID for horizontal width.
VEHT and HENT is for the picture size
stability when changing the brightness of
the screen. Receive pattern of cross hatch
with black background and then change to
white background, then compare the
vertical and horizontal size between black
and white background. Adjust VEHT and
HEHT until you get the minimum
difference of screen size. After you adjust
VEHT and HEHT, you must re-adjust
vertical and horizontal amplitude.
Adjust HPS for horizontal position.
Adjust DPCS, KEYS, ECCTS and
ECCBS until the vertical line at left and
right side of the picture become straight.
Adjust WIDS for horizontal width.
Adjust VEHTS and HEHTS using same
method of PAL system. Also need
re-adjustment of vertical and horizontal
amplitude.
7 Key 3
(Status
adjustment)
8 Key 4
(Status
adjustment)
CNTX (5A)
CNTN (07)
BRTX (20)
BRTN (1D)
COLX (3F)
COLN (00)
TNTX (42)
TNTN (28)
BRTC (30)
COLC (57)
COLS (47)
COLP (F0)
SCOL(04)
SCNT (0F)
CNTC (40)
TNTC (48)
---------- (all use default value)
---------- (all use default value)
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