If Adjustment; Auto Programming System Set Up; Options; Service Registers Updating Regarding The Tuner - Sharp 21LF-90N Service Manual

14.3.4 IF Adjustment

Select IF1, IF2, IF3 or IF4. When the blue button (14) is pressed the before selected IF register is automatically
adjusted.

14.4 Auto Programming System Set Up

1. Description
In case the TV set should be serviced, there is the possibility of returning the set with the A.P.S. (Auto Programming
System) activated in order to make easy the first start up to the customer. See the below figure.
If this Feature is activated the Picture and Sound Menus will be automatically memorized to the default values.
2. Before start
It is necessary let the TV set in the program number that will appear for the first time, because the A.P.S does not
preset this selection.
3. Procedure
3.1 Enter the Service Mode. See Page 23.
3.2 Access to TXT1 Register by CURSOR UP / DOWN.
3.3 Press 7 button on the remote control in order to activate the Auto Programming System.
3.4 Exit the Service Mode by the Menu button (30).
3.5 Switch the TV off using the mains switch.
15. OPTION LIST

15.1 Service Registers Updating regarding the Tuner

VHF1-VHF3 VHF3-UHF
Frq. (Mhz)
Philips UV1316S MK3
156,25 MHz 441,25 MHz
Thomson CTT5020
114,25 MHz 401,25 MHz
Samsung TECC2949PG28B
170,25 MHz 465,25 MHz
Samsung TECC2949PG35B
170,25 MHz 449,25 MHz
Alps TEDE9X226A
142,25 MHz 425,25 MHz
Alps TEDE9-004A
149,25 MHz 424,25 MHz
Explanations
F1H
F1L
F2H
F2L
BS1
BS2
BS3
AK30 PLL TUNER SETTINGS
Frq. (Mhz) F1H
00001100 00110010
00001001 10010010
00001101 00010010
00001101 00010010
00001011 01010010
00001011 11000010
High byte of VHF1-VHF3 cross-over frequency
Low byte of VHF1-VHF3 cross-over frequency
High byte of VHF3-UHF cross-over frequency
Low byte of VHF3-UHF cross-over frequency
Band switching byte for VHF1
Band switching byte for VHF3
Band switching byte for UHF
CB Control byte
27
AK44 SERVICE MENU ITEMS
F1L F2H F2L
00011110 00000010 00000001
00011011 10000010 00000011
00011111 10000010 00000001
00011110 10000010 00000001
00011101 00000010 00000001
00011100 11110010 00000001
AK - 44
CHASSIS
BS1 BS2 BS3
00000010 00000100 10001110
00000110 10000101 10001110
00000010 00000100 10001110
00000010 00001000 10001110
00000010 00001000 10001110
00000010 00001000 10001110
CB