Monday, February 02, 2015

PHILIPS 42PFL7422D/37 - 47PFL9732D/37 - 52MF437B/37 LCD TV SERVICE MODE AND POWER SUPPLY CIRCUIT



LCD SERVICE MODE AND POWER SUPPLY CIRCUIT

SERVICE MODE

Service Default mode (SDM) and Service Alignment Mode (SAM) offers several features for the service technician, while the Customer Service Mode (CSM) is used for communication between the call centre and the customer. This chassis also offers the option of using ComPair, a hardware interface between a computer and the TV chassis. It offers the abilities of structured troubleshooting, error code reading, and software version read-out for all chassis.

Service Default Mode (SDM)

Purpose

# To create a pre-defined setting, to get the same measurement results as given in this manual.
# To override SW protections detected by stand-by processor and make the TV start up to the step just before protection (a sort of automatic stepwise start up). See paragraph “Stepwise Start Up”.
# To override SW protections detected by Mips. See also paragraph “Error codes”.
# To start the blinking LED procedure (not valid for protections detected by stand-by software).

How to Activate SDM

For this chassis there are two kinds of SDM: an analog SDM and a digital SDM. Tuning will happen according table “SDM Default Settings”.

# Analog SDM: use the standard RC-transmitter and key in the code “062596”, directly followed by the “MENU” button.

Note:It is possible that, together with the SDM, the main menu will appear. To switch it “off”, push the “MENU” button again.

# Digital SDM: use the standard RC-transmitter and key in the code “062593”, directly followed by the “MENU” button.

Note:It is possible that, together with the SDM, the main menu will appear. To switch it “off”, push the “MENU” button again.

# Analog SDM can also be activated by shortening for a moment the two solder pads [1] (see figure “Service mode pads”) on the SSB, with the indication “SDM”. Activation can be performed in all modes, except when the set has a problem with the Stand-by Processor.

Region Freq. (MHz)

Default
system


Europe, AP(PAL/Multi) 475.25 PAL B/G
Europe, AP DVB-T 546.00 PID
Video: 0B 06 PID
After activating this mode, “SDM” will appear in the upper right corner of the screen
 (if you have picture).

How to Navigate

When you press the “MENU” button on the RC transmitter, the set will toggle between the SDM and the normal user menu (with the SDM mode still active in the background).

How to Exit SDM

Use one of the following methods:

# Switch the set to STAND-BY via the RC-transmitter.

# Via a standard customer RC-transmitter: key in “00”- sequence

Service Alignment Mode (SAM)

Purpose

# To perform (software) alignments.

# To change option settings.

# To easily identify the used software version.

# To view operation hours.

# To display (or clear) the error code buffer.

How to Activate SAM

Via a standard RC transmitter: key in the code “062596” directly followed by the “INFO” button. After activating SAM with this method a service warning will appear on the screen, you can continue by pressing the red button on the RC.

How to Exit SAM

Use one of the following methods:

# Press the “MENU” button on the RC-transmitter.

# Switch the set to STAND-BY via the RC-transmitter

POWER SUPPLY CIRCUIT
STANDBY POWER
CLICK ON THE IMAGE TO ZOOM IN

MAIN POWER 
CLICK ON THE IMAGE TO ZOOM IN