Alignments - Philips 14PT1501/12 Service Manual

8. Alignments

Index of this chapter:
8.1 Hardware Alignments
8.2 Software Alignments/Settings
8.1 Hardware Alignments
8.1.1 System Voltage Adjustment
• Switch the TV in AV mode by pressing the AV button on the
remote control unit (minimum beam current condition).
• Adjust the V100 potentiometer until you measure 110 V DC
on the cathode of diode D116
8.2 Software Alignments/Settings
Enter the TV Service Mode. The Service Mode menu will now
appear on the screen.
ST92195PSC7-V5
Program
OPTIONS
GEOMETRY
G2A
VIDEO
TUNER/IF
Figure 8-1 Service Mode Menu
Select one of the following alignments:
1. OPTIONS.
2. GEOMETRY.
3. G2ADJ.
4. VIDEO.
5. TUNER/IF.
8.2.1 Options
Options are used to control the presence/absence of certain
features and hardware.
An Option byte represents a number of different options. All
options are controlled via three option bytes.
Options
01: 1 1 1 1 1 1 1 1
02: 0 1 0 1 0 0 0 0
03: 1 1 1 0 0 1 1 1
How to change an Option byte
Select the option byte (01, 02 or 03) by pressing the CURSOR
UP/ DOWN keys.
Use a digit key (0 to 7) to change the relevant option bit. The bit
values will change from 0 to 1 and from 1 to 0 on each pressing
of the relevant digit key.
Option bit definition
Option byte 1: System configuration
b0: 1: Welcome Bit Set; 0: Welcome Bit Reset
b1: 1: Stroke 05 Selected / PAL I; 0: Stroke 01 or 58 selected
b2: 1: SecamL Available; 0: SecamL not Available
b3: 1: AV available; 0: AV not available
b4: 1: Standby; 0: Last State
b5: 1: West Europe available; 0: West Europe not available
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b6: 1: East Europe available; 0: East Europe not available
b7: 1: EXT2 available; 0: EXT2 not available
Option byte 2: Video configuration
b0: 1: QSS Application; 0: Intercarrier Application
b1: 1: Blue Screen enable; 0: Blue Screen disable
b2: 1: OSD Contrast Control enable; 0: OSD Contrast Control
disable
b3: 1: APR ON; 0: APR OFF
b7 b6 b5 b4: APR Level
0 0 0 0: 50 IRE
0 0 0 1: 53.33 IRE
0 0 1 0: 56.66 IRE
0 0 1 1: 60 IRE
0 1 0 0: 63.33 IRE
0 1 0 1: 66.66 IRE
0 1 1 0: 70 IRE
0 1 1 1: 73.33 IRE
1 0 0 0: 76.66 IRE
1 0 0 1: 80 IRE
1 0 1 0: 83.33 IRE
1 0 1 1: 86.66 IRE
1 1 0 0: 90 IRE
1 1 0 1: 93.33 IRE
1 1 1 0: 96.66 IRE
1 1 1 1: 100 IRE
Option 2 PT1501: b7,b6,b5,b4,b3=1; b2,b1=0; b0=1
Option 2 PT1521: b7,b6,b5,b4,b3=1; b2,b1=0; b0=1
Option byte 3 : Hardware configuration
b0: 1: RC014 available; 0: RC011 available
b1: 1: ST2248E Version;0: ST2248C Version
b2: 1: CVBS_Output 2.3V; 0: CVBS_Output 2V
b3: 1: One Xtal Appl (4.43 MHz); 0: Two Xtal Appl (for NTSC)
b4: 1: Smart sound available; 0: Smart sound not available
b5: 1: PT14 smart picture; 0: PT21 smart picture
b7 b6: Tuner Selection
0 0: Thomson
0 1: Philips
1 0: Thomson 5540
1 1: Samsung
Option 3 PT1501: b7=1;b6=0;b5,b4=1;b3=0;b2,b1=1;b0=x
Option 3 PT1521: b7=1;b6=0;b5,b4=1;b3=0;b2,b1=1;b0=x
8.2.2 Geometry
The Geometry Alignments menu contains several items to
align the set, in order to obtain correct picture geometry.
Figure 8-2 Geometry
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