TCL 2127, 27F230T, M134C, 29185, 24FS210T Diagram

4.5 (2)
Alignment Procedure
MODEL 27F230T/24FS210T V3.0
PREPARED BY : Jenny DATE: 2004-5-13
File No.YF-Fk07-2002
Page 1 8 pages in total
Serial number
TS-00
No.:YF-Fk07-2002 Page 2, 9 pages in total
2
Alignment Procedure
一、Summarize
27F230T/24FS210T chassis Alignment Procedure
29185N6/25185N6is NTSC only system model developed for NAFTA market
specially. In trial run, burn the software A27V01-TO to TMPA8809 or TMPA8827 IC by
OTP method. after the trial run, make the maskplease take care in production.

To solve the probable problems in production, for the workers participate
in alignment, please be familiar with the Alignment Procedure, and be master of the
features.
There are 2 operation modesuser mode and factory mode. You can use the
Remote control or buttons on the panel to operate in user mode, but only Remote
control works in factory mode.

The way to enter factory modePress D-MODEbutton on RC pressOK
andCH+ CH-to select the parameter you want to adjust. PressVOL+
VOL-to change the parameters. To quit factory modepressD-MODEbutton
on the right of SURR buttonthe factory data changed will be memorized.
A few special modes
Aging mode used before the aging before alignment. The aging could
start in factory mode.
Vertical stop modeused to confirm the screen voltage. Press INPUT
button in factory mode to enter Vertical stop mode. Then press
INPUT button again to exit.
White balance alignment modeused for white balance auto alignment.
PressBUS OFF button near the left of MTS button to
enter White balance alignment mode.
Factory mode To initialize the set. Press SURR button in factory mode
to enter Factory modethe screen displaysWAIT after the
initializationthe screen displays OK
and exit the Factory
mode automatically.
Then press D-MODEbutton againit will not enable you to enter
Factory modeif you want to enter againyou need operate as
followsturn down the volume to 0press Volume downbutton
on the panel pressINFObutton on the RC meantime.
No.:YF-Fk07-2002 Page 3, 9 pages in total
3
Alignment procedure
二.Alignment contents
1. Adjustment of B+ voltage
Receive Philips standard testing pattern to RF input.
Adjust VR821 in STANDARD mode until voltage at B+=130V±0.5V
2. RF AGC adjustment
Observe monitor the collector waveform of Q101 with the probe of Oscilloscope as
illustration below. Select channel 2 (>70dB) from the antenna input. Enter D-mode,
select menu6 to adjust RFAGC item until the monitor peak value to 0.8V
p-p
.
IN60
3P
f
outpu
t
in
p
ut
3. Screen & Focus voltage adjustment
Apply pattern signal in normal status, enter Factory modepressINPUTbutton
to stop vertical scan.
Notethe RC/GC/BC is preset to be 80GD/BD is 40
Adjust the SCRREEN switch on the flyback transformer to make a horizontal
shining line just visible on the screen.
Turn on the vertical output, adjust the “FOCUS” on the flyback transformer to
obtain the optimum focus.
4. White balance adjustment(NORMAL:X=285+8, Y=294+8)
1) Apply the black and white pattern in normal status;
2) Alignment of normal color temperature
Change Color Temperature to normal status
Use a color analyzer to measure the black side of the screen. By changing the
value of RC, GC and BC, set the reading of the color analyzer to X=285+8,
Y=294+8.
Use a color analyzer to measure the white side of the screen. By changing the
value of GD, BD, set the reading of the color analyzer to X=285+8, Y=294+8
Separately set the brightness and contrast from min. to max., repeat the step 2
and 3 until the reading of the color analyzer is correct.
Note: Provided the production line is equipped with the self- White balance
adjusting equipment, white balance can be adjusted automatically as following: Press
“BUS OFF” button under factory mode, the TV set will adjust automatically.
(Warm: X=310+8, Y=314+8;Cool: X=278+8, Y=282+8)
5. Adjustment of Sub-brightness,
Apply the Grey-scale/Color bar (NTSC signal) to the AV input, in normal status.
Enter factory alignment menu 5, Select BRTC to adjust the sub-brightness, until that
the 2
nd
dark bar of 8 level Grey scale just can be seen.
No.:YF-Fk07-2002 Page 4, 9 pages in total
4
6. picture geometric adjustment
1) Apply the Philips standard testing pattern in normal status, then enter
menu 3, adjusting the following data to get the min-distortion.
HPOS6Horizontal Center PARA6 Level TRAP6 Trapezia
HSIZE6Horizontal Size CNRT6 To p CNRB6 Bottom
2) Apply the Philips standard testing pattern in normal status, then enter
menu 3, adjusting the following data to get the min-distortion.
HIGH6 (Height) VP60Vertical Center
VLIN6Linearity VSC6Vertical-S Correction
7 EHT/HEW ratio testtest with PC program
Instruments EHT test meterEHT test bar(1000:1)adjustable power supplyvirtual
DY( the same L value with CRT in production ).
Test means Measure the EHT value V when Ib=0HEW voltage value is V1(DC
voltage at 2 ends of C249).
Check means apply PC test meansV/V1 should satisfy the requiments below
EHT/HEW ratio
44-29RFLW-TS2A
1245 ±3% ( 1207 1282)
29185N6
(27F230T)
A60LVY196X15(O)
1256±3% ( 1218 1293 )
25185N6
(24F210T)
8X rays over voltage protecting circuit test:
TV enter working modeapply more than 27V DC voltage between two ends of
C249the set should enter protecting modeor check X rays protecting circuit.
No.:YF-Fk07-2002 Page 5, 9 pages in total
5
9PS line polarities test
Connect follow the graphic below
DX 2.2k
PS socket M
TO F801
Plug the PS line onto the PS socket M, then touch any pin of F801 with the
probe, the LED DX will shine at the moment, with sound reminder, or it is
disqualification.
10PS power test(Random test)
Instruments Power meter.
Input signal pattern Color barSound 1KHZ 100% modulation.
Input signal intensity 60dBuv (1 mV rms)
Test points find the graphic below
Test means Set the Brightness, CR to the highest, adjust the volume to make
the sound output to be 0.5W. Connect the power meter to test
the power consumption. Transfer the set to be standby, and test
the power consumption at the moment, which should meet the
requirements below
Model Power Standby power (120V)
29185N6
114 W ± 10%
< 1W
25185N6
109 W ± 10%
< 1W
DC PS
9V
- +
Sound reminder
No.:YF-Fk07-2002 Page 6, 9 pages in total
6
11High voltage and Ib value limit test( random test )
Instruments High voltage meter Ib meter.
Input signal pattern White vertical
Input signal intensity 60dBuv (1 mV rms)
Test means Connect High voltage meter and Ib meter. Test voltage of different
Ib separately, It
should meet the requirements below
Anode high voltage (kV)
Ib
25’ 29’
I
b
= 50µA
30.0 ± 1.0 30.0 ± 1.0
I
b
= 50µA & 1200µA
Diff. < 2 Diff. < 2
12Heater voltage test ( random test )
Instruments RMS voltage meter
Input signal pattern Philips test graphic
Input signal intensity 1 mVrms60dBuVto 50 mVrms
Connect the RMS voltage meter to the 2 ends of CRT glowerstest the heater
voltage of highest CR and Brightness, It should meet6.3±0.3Vrms
13BTSC/SAP function test
BTSC/SAP do not need testbut BTSC/SAP decoder function should be tested
normal or not.
14CCD and VOL-CHIP function test
VOL-CHIP and CCD function testplease find the service manual in detail.
15Initialization
Under the factory modepressSURRbuttonthe screen displaysWAIT
when the screen displays OK, the initialization finished,
You can enter the next working procedure.
No.:YF-Fk07-2002 Page 7, 9 pages in total
7
EEPROM DATA:
FAC 01 FAC 02 FAC 02 FAC 03
Item Data Item Data Item Data Item Data
RC * 80 HIGH5 1B/0D HIGH6* 1A/0E HPOS5 0C/0F
GC * 80 VP50 03/01 VP60 * 04/05 PARA5 10/11
BC * 80 VLIN5 0A/0B VLIN6* 0A/0B TRAP5 29/27
GD * 40 VSC5 0C/07 VSC6 * 0B/08 HSIZE5 1F/16
BD * 40 VBLK5 00/00 VBLK6 00/00 CNRT5 0A/08
VCEN5 32/33 VCEN6 33/35 CNRB5 06/08
VEHT5 03/03
HEHT5 03/03
FAC 03 FAC 04 FAC 05 FAC 06
Item Data Item Data Item Data Item Data
HPOS6 * 10/14 CNTX 7F BRTC 40 ST3 20
PARA6 * 0F/16 CNTN 08 COLC 2C SV3 20
TRAP6 * 27/25 BRTX 20 COLP 00 SV4 19
HSIZE6* 20/16 BRTN 20 SCOL 07 SVD 19
CNRT6 * 0B/09 COLX 35 SCNT 0C ASSH 07
CNRB6 * 07/0D COLN 00 CNTC 51/4C SHPN 10
VEHT6 03/03 TNTX 28 TNTCT 40 SHPN 2A
HEHT6 03/03 TNTN 28 TNTCV 40
FAC 07 FAC 08 FAC 09 FAC 10
Item Data Item Data Item Data Item Data
MOD1 60 RFAGC * 25 V01 46 MODE4 22
MOD2 B0/30 BRTS 00 V25 6B MODE5 0B
MOD3 F0 OSD 21 V50 75 MODE6 1F
OPT 37 OSDF 53 V100 7F MODE7 C4
OPTM1 C0 CCD OSD 4A VOLMAX 32 MODE8 2D
OPTM2 C0 CCD OSDF 65 CURTCEN A5 MODE9 02/0B
HDCNT 00 TXCN 1F GATE 2A
HSTOP FF RGCN 16 VOL-OUT 73
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