Service Mode - Philips 13PT30L1 Service Manual

Service Mode

Introduction
1. There are three service modes used in the E8 chassis. They are:
a. SDM - Service Default Mode
b. SAM - Service Alignment Mode
c. CSM - Customer Service Mode
2. The Service Default Mode (SDM) is a technical aid for the service technician. It is used for setting of
options, reading error codes, and erasing error codes. This mode displays the Run Timer, Software Version,
and current option settings. Service Default Mode (SDM) also establishes a fixed, repeatable setting of
controls to allow measurements to be made. On screen display is kept at a minimum to reduce the cluttering
of wave forms with unwanted information.
3. The Service Alignment Mode (SAM) is used to make tuning adjustments, align the white tone, adjust the
picture geometry, and make sound adjustments.
4. The Customer Service Mode shows error codes and information on the TV operation settings. The servicer
can instruct the customer to enter CSM by telephone and read off the information displayed. This helps the
servicer to diagnose problems and failures in the TV set before making a service call.
5. When in a service mode, "SDM" (for Service Default Mode) or "SAM" (for Service Alignment Mode) or
"CSM" (for Customer Service Mode) will be displayed (in green) in the top right corner of the screen. All
other On Screen Display (except highlighted items in SDM or SAM) will be in red.
6. It will be memorized in the EEPROM that the TV set is in SDM or SAM. This is necessary because the TV
must show up in SDM or SAM again after an ac power interrupt.
7. When the television is in SAM or SDM, all normal features (such as volume control and direct channel
access) are available.
EEPROM Replacement or Defective EEPROM
After replacing a EEPROM (or with a defective/no EEPROM) default settings will be used that enable the set to
start up and that allow access to the Service Default Mode and Service Alignment Mode.
Service unfriendly modes
In the service modes, a number of modes/features are ignored since they interfere with diagnosing or repairing
a set. These are "service unfriendly modes."
"Ignoring" means that the event that is triggered is not executed; the setting remains unchanged (Example:
Timer OFF: 8:00 PM; the set will not switch OFF in service mode at 8:00PM, but the setting will remain).
The service unfriendly modes are:
(Sleep) timer
Blue mute
Auto switch off (when there is no video signal identified)
Hotel or hospital mode
Smart lock or blocking by V-chip
Skipping and/or blanking of "Not Favorite" channels
Automatic storing of Personal Preset settings
Automatic user menu time-out (menu switches back or OFF automatically)