GE 32GT720YX4, Техническая сервисная информация

Страница: 2 / 16

TUNER INFORMATION
PPPPPaaaaaggggge 1 e 1 e 1 e 1 e 1 SET 4679 SET 4679 SET 4679 SET 4679 SET 4679
TUNER TUNER
TUNER TUNER TUNER VVVVVOL
OL
OL OL OLTTTTTAAAAAGE CHAR
GE CHAR
GE CHAR GE CHAR GE CHARTTTTT
Pin Pin Pin Pin Pin VHF Lo VHF Lo VHF Lo VHF Lo VHF Low Band w Band w Band w Band w Band VHF High Band VHF High Band VHF High Band VHF High Band VHF High Band UHF Band UHF Band UHF Band UHF Band UHF Band
(1) AGC 2.3V 2.7V 2.5V
(2) NC 2.0V 5.1V 5.2V
(3) +5V 5.1V 5.1V 5.1V
(4) CLK 5.1V 5.1V 5.1V
(5) DATA 5.1V 5.1V 5.1V
(6) +5V 5.1V 5.1V 5.1V
(7) +5V 5.1V 5.1V 5.1V
(9) +32V 34.0V 34.0V 34.0V
(11) IF 0V 0V 0V
NOTE: VHF Low Band voltages taken on channel 2.
VHF High Band voltages taken on channel 7.
UHF Band voltages taken on channel 14 .
τ
(1)
τ
(11)
τ
(9)
τ
(7)
τ
(5)
τ
(3)
τ
(2)
τ
(4)
τ
(6)
TUNER TUNER TUNER TUNER TUNER TERMINAL GUIDE TERMINAL GUIDE TERMINAL GUIDE TERMINAL GUIDE TERMINAL GUIDE
MISCELLANEOUS ADJUSTMENTS
NOTE: All procedures require an antenna connected and power applied to the
set.
HIGH HIGH HIGH HIGH HIGH VVVVVOL OL OL OL OLTTTTTAAAAAGE CHECK GE CHECK GE CHECK GE CHECK GE CHECK
Tune in a picture. Set brightness, contrast, and color to MINIMUM. Connect a
high voltage probe to the CRT anode. High voltage should measure between
29kV and 32kV.
COLOR COLOR COLOR COLOR COLOR TEMPERA TEMPERA TEMPERA TEMPERA TEMPERATURE TURE TURE TURE TURE
NOTE: See Service Adjustment Parameters to change drive and bias values.
Press menu button for collapsed raster service line. Disconnect the antenna.
Preset the red, green, and blue drive values to 32. Adjust screen control for a
service line that is just visible. Adjust red, green, and blue drives to obtain a
white raster. Check the low light to high light gray scale tracking. Repeat
the procedure, if necessary, to obtain the best performance.
SER SER SER SER SERVICE MENU VICE MENU VICE MENU VICE MENU VICE MENU
The following adjustment procedures are accessed thru a service menu. To access the service menu, turn the receiver on, press the menu button and hold it down
while pressing the power button. While holding down the menu button, release the power button and press the button. The screen will display a one
line menu, on the left the parameter P0, and on the right the value of that parameter V0. Release buttons. Adjustments are made by selecting the proper param-
eter and changing the value of that parameter. To change the parameter number use channel up and down buttons. To adjust the current value of that parameter
use and - buttons. To access and change any of the adjustments, the proper parameter pass number must be entered. This information is listed at the
beginning of the alignment. When these parameters are modified, the T-Chip and the corresponding EEPROM are updated. All service adjustments are bus
controlled, except focus and screen.
NOTE: In order to adjust the RF AGC, audio or video levels, tuner, PIP, or stereo circuits, the ChipperCheck hardware and software must be used. This can be
purchased from Thomson Electronics. Before making any changes to any of the values, record the On Set values.
SER SER
SER SER SERVICE ADJUSTMENT PARAMETERS
VICE ADJUSTMENT PARAMETERS
VICE ADJUSTMENT PARAMETERS VICE ADJUSTMENT PARAMETERS VICE ADJUSTMENT PARAMETERS
PPPPParameter arameter arameter arameter arameter On Set On Set On Set On Set On Set VVVVValue alue alue alue alue
No. No. No. No. No. PPPPParameter Name arameter Name arameter Name arameter Name arameter Name VVVVValue alue alue alue alue Rang Rang Rang Rang Rangeeeee Comment Comment Comment Comment Comment
0 Pass number for service
adjustment parameters. Must set to 76 - May not advance until value is set to 76
.
1 Error Code 1 0 0 - 255 Displays the first error detected. Set to 0 before exiting.
See Error Codes Chart.
2 Error Code 2 0 0 - 255 Displays the second error detected. Set to 0 before exiting.
See Error Codes Chart.
3 Error Code 3 0 0 - 255 Displays the last error detected. Set to 0 before exiting.
See Error Codes Chart.
4 Horizontal Phase 10 0 - 15 Tune in a crosshatch pattern, adjust to center the pattern on the screen.
5 EW DC (Width) 16 0 - 31 Tune in a crosshatch pattern, adjust for slight horizontal overscan.
6 EW Amplitude 8 0 - 15 Set value to 8.
7 EW Tilt 8 0 - 15 Set value to 8.
8 Top Corner Pin Correction 2 0 - 7 Set value to 2.
9 Bottom Corner Pin Correction 2 0 - 7 Set value to 2.
10 Vertical DC 33 0 - 63 Tune in a crosshatch pattern, adjust to center vertically.
11 Vertical Size 84 0 - 127 Tune in a crosshatch pattern, adjust for slight vertical overscan.
12 Vertical Countdown Mode 0 0 - 3 Set value to 0. ( 0 = Standard, 1 = Non-Standard, 2 = 50Hz, 3 = 48Hz )
13 Red Bias 30 0 - 127 Press menu button on the TV set for setup line.
14 Green Bias 15 0 - 127 Press menu button on the TV set for setup line.
15 Blue Bias 34 0 - 127 Press menu button on the TV set for setup line.
16 Red Drive 41 0 - 63 -
17 Green Drive 33 0 - 63 -
18 Blue Drive 32 0 - 63 -
19 Gemstar Horizontal OSD Position 166 0 - 255 Set value to 166.
20 Gemstar Vertical OSD Position 68 0 - 255 Set value to 68.
21 Gemstar PIP Horizontal Position 40 0 - 255 Set value to 40.
22 Gemstar PIP Vertical Position 43 0 - 255 Set value to 43.
23 Gemstar PIP Window Vertical Size 3 0 - 13 Set value to 3.