Philips 42PFL4007G78 – SMPS Schematic - 715G5194 PSU 32inch and 37inch LCD TVs - 3500/4000 series
715G5194 PSU 32" & 37"
3500/4000 series
Used Semiconductors: CAP004DG-NC – PF7700S – LD7523GS – A6069 - TK68A65D(FET) - OD4126(FET)
All power supplies for TVs that are using a LED back lit LCD panel
are under repair policy. When defective, first check the main fuse of the power
board. Always replace a defective fuse with one with the correct
specifications! This part is available in the regular market. Consult the Philips Service web portal for
the order codes of the
boards.
Important delta’s with the 4000 series platform are
• New power architecture for LED backlight (PSL, PSLS, PSDL)
• “Boost”-signal is now a PWM-signal + continuous variable. The used control signals are
• Stand-by
• Inverter “on/off”
• DIM (PWM) (not for PSDL)
• Boost (PWM except for IPB)
boards.
Important delta’s with the 4000 series platform are
• New power architecture for LED backlight (PSL, PSLS, PSDL)
• “Boost”-signal is now a PWM-signal + continuous variable. The used control signals are
• Stand-by
• Inverter “on/off”
• DIM (PWM) (not for PSDL)
• Boost (PWM except for IPB)
The output voltages to the chassis are
• +3.3 V-STANDBY (Stand-by mode only)
• +12 V (on-mode)
• +V snd (+24 V) (audio power) (on-mode)
• +24 V (bolt-on power) (on-mode)
• Output to the display; in case of
- IPB: High voltage to the LCD panel
- PSL and PSLS (LED-driver outputs)
- PSDL (high frequent) AC-current.
• +3.3 V-STANDBY (Stand-by mode only)
• +12 V (on-mode)
• +V snd (+24 V) (audio power) (on-mode)
• +24 V (bolt-on power) (on-mode)
• Output to the display; in case of
- IPB: High voltage to the LCD panel
- PSL and PSLS (LED-driver outputs)
- PSDL (high frequent) AC-current.
Diversity
The diversity in power supply units is mainly determined by the diversity in displays.
The following displays can be distinguished:
• CCFL/EEFL backlight: power board is conventional IPB
• LED backlight:
- side-view LED without scanning: PSL power board
- side-view LED with scanning: PSLS power board
- direct-view LED without 2D-dimming: PSL power board
- direct-view LED with 2D-dimming: PSDL power board.
PSL stands for Power Supply with integrated LED-drivers.
PSLS stands for a Power Supply with integrated LED-drivers with added Scanning functionality (added microcontroller).
PSDL stands for a Power Supply for Direct-view LED backlight with 2D-dimming.
The diversity in power supply units is mainly determined by the diversity in displays.
The following displays can be distinguished:
• CCFL/EEFL backlight: power board is conventional IPB
• LED backlight:
- side-view LED without scanning: PSL power board
- side-view LED with scanning: PSLS power board
- direct-view LED without 2D-dimming: PSL power board
- direct-view LED with 2D-dimming: PSDL power board.
PSL stands for Power Supply with integrated LED-drivers.
PSLS stands for a Power Supply with integrated LED-drivers with added Scanning functionality (added microcontroller).
PSDL stands for a Power Supply for Direct-view LED backlight with 2D-dimming.
CONNECTOR VOLTAGES
SMPS circuit diagram
AC side
LED side
Main power
DC/DC Converters
The on-board DC/DC converters deliver the following voltages (depending on set execution):
• +5V2-STANDBY, permanent voltage for the Stand-by controller, LED/IR receiver and controls; connector CN9302/CN902 pins 2 and 3
• +12V, input from the power supply for the panel common (active mode); connector CN9302/CN902 pins 10 and 11
• +24V, input from the power supply for audio amplifier, connector CN9302/CN902 pins 5 and 6
• +1V1, core voltage supply for MT5366; has to be started up first and switched “off” last (diagram B01)
• +1V2, supply voltage for power supply for the scaler IC MT5366
• +1V5, supply voltage for DDR3
• +3V3, general supply voltage
• +5V-TUN, supply voltage for tuner
• +5V-USB, input intermediate supply voltage for USB
• +3V3 from the power supply for the scaler IC MT5366 Figures gives a graphical representation of the DC/DC converters.
The on-board DC/DC converters deliver the following voltages (depending on set execution):
• +5V2-STANDBY, permanent voltage for the Stand-by controller, LED/IR receiver and controls; connector CN9302/CN902 pins 2 and 3
• +12V, input from the power supply for the panel common (active mode); connector CN9302/CN902 pins 10 and 11
• +24V, input from the power supply for audio amplifier, connector CN9302/CN902 pins 5 and 6
• +1V1, core voltage supply for MT5366; has to be started up first and switched “off” last (diagram B01)
• +1V2, supply voltage for power supply for the scaler IC MT5366
• +1V5, supply voltage for DDR3
• +3V3, general supply voltage
• +5V-TUN, supply voltage for tuner
• +5V-USB, input intermediate supply voltage for USB
• +3V3 from the power supply for the scaler IC MT5366 Figures gives a graphical representation of the DC/DC converters.
Reset of Repaired SSB
A very important issue towards a repaired SSB from a Service repair shop (SSB repair on component level) implies the reset of the NVM on the SSB.
A repaired SSB in Service should get the service Set type “00PF0000000000” and Production code “00000000000000”. Also the virgin bit is to be set. To set all this, you can use the ComPair tool or use the “NVM editor” and “Dealer options” items in SAM (do not forget to “store”).
After a repaired SSB has been mounted in the set (set repair on board level), the type number (CTN) and production code of the TV has to be set according to the type plate of the set. For this, you can use the NVM editor in SAM. The loading of the CTN and production code can also be done via compare (Model number programming).
In case of a display replacement, reset the “Operation hours display” to “0”, or to the operation hours of the replacement display.
A very important issue towards a repaired SSB from a Service repair shop (SSB repair on component level) implies the reset of the NVM on the SSB.
A repaired SSB in Service should get the service Set type “00PF0000000000” and Production code “00000000000000”. Also the virgin bit is to be set. To set all this, you can use the ComPair tool or use the “NVM editor” and “Dealer options” items in SAM (do not forget to “store”).
After a repaired SSB has been mounted in the set (set repair on board level), the type number (CTN) and production code of the TV has to be set according to the type plate of the set. For this, you can use the NVM editor in SAM. The loading of the CTN and production code can also be done via compare (Model number programming).
In case of a display replacement, reset the “Operation hours display” to “0”, or to the operation hours of the replacement display.
To activate SAM, use one of the following methods:
• Press the following key sequence on the remote control transmitter: “062596”, directly followed by the “INFO” button. Do not allow the display to time out between entries while keying the sequence.
• Or via ComPair.
After entering SAM, the following items are displayed, with “SAM” in the upper right corner of the screen to indicate that the television is in Service Alignment Mode.
Main Menu Sub-menu 1 Sub-menu 2 Description
System Information Op Hour This represents the life timer. The timer counts normal operation hours, but does not count Stand-by hours.
Main SW ID e.g. “T923L 1.033C”
ERR e.g. “000 000 000 000 000” Shows all errors detected since the last time the buffer was erased. Five errors possible.
OP1 e.g. “012 007 208 002 184 032 007 030”
Used to read-out the option bytes.
OP2 e.g. “056 023 000 106 064 000 000 122”
Clear Press [OK] to clean the Error Codes immediately
Erases the contents of the error buffer. Select this menu item and press the MENU RIGHT key on the remote control. The content of the error buffer is cleared.
RGB Align Warm R Gain To align the White Tone. See
G Gain section Alignment
