Alignments
EN 15
TC5.1L CB
8.
8.
Alignments
8.1
How to Put the Set into Factory Mode
•
Press the “D-MODE” button on the remote control.
•
Press the “OK” button on the remote control.
•
Press the “CH+” or the “CH-” button to select the parameter
you want to adjust.
•
Press the “VOL+” or the “VOL-” button to adjust the
selected parameter.
•
To put the new values into the memory, leave the factory
mode with the “D_MODE” button on the remote control.
8.2
Adjustment of the B+ (BAT) voltage
1.
Apply the Philips standard test pattern to the RF input.
2.
Connect a DC voltmeter (range >200 V) to pins 1 (GND)
and 3 (+) of S804 [1].
3.
Adjust potentiometer VR802 [2] in STANDARD mode in
such a way the voltage reading is 130 +/- 0.5 V.
Figure 8-1 Test pin & potentiometer position
8.3
RF AGC Alignment:
1.
Connect a test circuit as depicted in figure “Test circuit”.
2.
Apply an 8-scale gray signal (80 dB
μ
V).
3.
Adjust the AGC data until the output of the test circuit
becomes 0.4 V (p-p)
±
0.05 V.
4.
Change the 8-scale gray signal to 60 dB
μ
V.
5.
The shown value of CRO should be the same as while
receiving the 80 dB
μ
V signal. If not, repeat step 3 and 4
until the results for 60 dB
μ
V and 80 dB
μ
V input signal are
the same.
Figure 8-2 Test circuit
H_174
8
0_006.ep
s
051007
2
1
2
2
H_174
8
0_007.ep
s
050707
Q101
C1
33
pF
D2
D1
1N60
C2
TO CRO
100pF
R1
100k
1N60
Summary of Contents for TC5.1L
Page 13: ...Circuit Diagrams and CBA Layouts EN 13 TC5 1L CB 7 CRT Panel G_16340_014 eps 100306 ...
Page 21: ...Circuit Descriptions Abbreviation List and IC Data Sheets EN 21 TC5 1L CB 9 ...
Page 22: ...Circuit Descriptions Abbreviation List and IC Data Sheets EN 22 TC5 1L CB 9 ...
Page 27: ...Revision List EN 27 TC5 1L CB 11 11 Revision List Manual xxxx xxx xxxx 0 First release ...