8 Serviceman Mode (Electronic Controls)
This Receiver has electronic technology using the I
2
C BUS Concept. It performs as a control function and it replaces many
mechanical controls. Instead of adjusting mechanical controls individually, many of the control function are now performed by
using “On Screen Display Menu”. (The Serviceman Adjustment Mode.)
Note
It is suggested that the technician reads all the way through and understand the following the procedure for Entering/Exiting the
Serviceman Mode; then proceed with the instructions working the Receiver. When becoming familiar with the procedure, the
Flow Chart for Serviceman Mode may be used as a quick guide.
Quick Entry to Serviceman Mode:
At times when minor adjustments need to be done to the electronic controls, the method of Entering the serviceman Mode
without removal of the cabinet back is as follows using the Remote Control:
1. Select SET-UP icon and select CABLE mode.
2. Select TIMER icon and set SLEEP time for 30 Min.
3. Press ACTION button twice to exit menus.
4. Tune to the Channel 124.
5. Adjust VOLUME to minimum (0).
6. Press the VOL
button (decrease) on Receiver. Red “CHK” appears in upper corner.
To toggle between Aging and Serviceman modes:
While the “CHK” is displayed on the left top corner of the screen, pressing the Action and the Volume up button on the
Receiver simultaneously will toggle between the modes. Red “CHK” for Serviceman and yellow “CHK” for Aging.
17
TH-42PA20U-P
Summary of Contents for TH-42PA25U/P
Page 11: ...4 TH 42PA20U A...
Page 28: ...6 2 Lead of Wiring 2 9...
Page 29: ...6 3 Lead of Wiring 3 10...
Page 30: ...6 4 Lead of Wiring 4 11...
Page 55: ...16 Mechanical Replacement Parts List 36...
Page 61: ...C2342 ECA1HHG100 E 10UF 50V 1 42...
Page 78: ...R416 ERJ6ENF2551 M2 55KOHM 1 10W 1 59...
Page 82: ...R2453 ERJ6GEYJ103 M 10KOHM J 1 10W 1 63...
Page 95: ...76...
Page 225: ...1 Applicable signals 4 TH 42PA20U P...
Page 230: ...6 Location of Lead Wiring 6 1 Lead of Wiring 1 9 TH 42PA20U P...
Page 231: ...6 2 Lead of Wiring 2 10 TH 42PA20U P...
Page 232: ...6 3 Lead of Wiring 3 11 TH 42PA20U P...
Page 233: ...6 4 Lead of Wiring 4 6 5 Lead of Wiring 5 12 TH 42PA20U P...
Page 242: ...9 4 IIC mode structure following items value is sample data 21 TH 42PA20U P...
Page 253: ...32 TH 42PA20U P...