Text preview for : GP9DE THxxPX60, THxxPX600 SERVICE GUIDE.pdf part of panasonic GP9DE THxxPX60, THxxPX600 SERVICE GUIDE panasonic PDP National Training GP9DE THxxPX60, THxxPX600 SERVICE GUIDE.pdf
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Panasonic
THxxPX60, THxxPX600, GP9DE CHASSIS
SERVICE GUIDE
OVERVIEW OF BOOT UP SEQUENCE FOR PSU:
5-1. Power Supply Overview (1/2)
Power SW
AC Plug
P SS
12V
Standby
Power
STB_PS S
Circuit
D DG
STB_5V
Panel_ON Panel_STB_ON
Relay Micom
Micom
ON/OFF Power
Relay Power Micom
MCU Micom
MCU TV_SUB_ON
Vlow F_STB
ON/OFF ON/OFF
TV_MAIN_ON
Vsus PA
ON/OFF MAIN/SUB 5V
F_STB_14V
MAIN SUB 9V
CONV. CONV.
15V
PFC ACFB SW Vsus
Circuit Circuit
SW Vda
1. The voltage driving each circuit is made by P board.
2. The circuit of P board consists of "standby power circuit", "PFC circuit" and
"ACFB circuit".
STANDBY produces 5V and 12V, PFC produces 390V, ACFB produces Vsus,
Vda, 15V, 12V
3. These power circuits are controlled by micros on P board and D, DG boards.
4. DG BOARD PSU CONTROL SIGNALS: