Panasonic PT-RS30K Service Manual page 137

SECTION 4 SCHEMATIC DIAGRAMS
2.2. Power supply flow and timing chart
PF-PCB
POWER SUPPLY
CIRCUIT
POWER
CPU
MAIN POWER
SWITCH
PF9 PF8
POWER CORD
D1 D1
D-PCB D-PCB
LD1S LD2S
D2 D5 D2 D5
DR5 DR8 DR2 DR7
DR-P.C.B
POWER SUPPLY TIMING CHART (ECO STANBY MODE)
SUB CPU ON MAIN CPU ON
+5V / +12V /+16V
+3.3VSTB
+5VSTB
+3.3VECO
LOWB_ON
RELAY_ON
STB_ON
380V_A_AC
AC Plug IN Main SW ON POWER ON
PF5 PB1
380V_A 1 1
380V_B 6-7
2
8
UART_TXD/RXD_A 7-8
9
RELAY_ON
9
P16V_A_STB 10
REG. 10
P16V_B
11
AC_OFF_DET_A
15
PWR_DOWN_B
16
P16V_A
PF7 PF6
D1 D1
D-PCB D-PCB
PB2
LD1B LD2B 1
6
7-8
10
D2 D5 D2 D5
DR5 DR8 DR2 DR7
DR-P.C.B
POWER SUPPLY TIMING CHART (NORMAL STANBY MODE)
LOW B ON
SUB CPU ON MAIN CPU ON
LD ON
+5V / +12V /+16V
+3.3VSTB
+5VSTB
+3.3VECO
LOWB_ON
RELAY_ON
STB_ON
380V_AC_A
AC Plug IN Main SW ON POWER ON
PB-P.C.B
+3.3VECO
380V_A_AC SW
UART_TXD/RXD_A +3.3VSTB
RELAY_ON DC-DC +5V
P16V_A_STB STB_ON
AC_OFF_DET_A LOWB_ON
TR DC-DC
PWR_DOWN
UART_RXD/TXD_A/B
AC_OFF_ECOSTB
DC-DC
SW 16V
+3.3VSTB
+5VSTB
DC-DC
DC-DC
3.3V
DC-DC +12VB
380V_B
P16V_B
UART_TXD/RXD_B
PWR_DOWN_B
SW
16V
DC-DC
5V_STB(USB1)
5V_STB(USB2)
ECO STANDBY
NORMAL STANDBY
POWER ON
LOW B ON
LD ON
Control signal input status
Mode
STB_ON
(PB3-7)
ECO
Low
STANDBY
NORMAL
Hi
STANDBY
POWER ON Hi
DIA-9
A-P.C.B
PB3
1
3
5
A1
7
1 +3.3VSTB
Supply to Main CPU
8
+5VSTB and other circuits
3
9
5 +3.3V_A
10-14
+3.3V_B
6
14
9 +12VB
PB4
1-18
21
A2
22
DG1
25,26 DG-P.C.B
29
DG3
1 +17V_DG_1
3 +17V_DG_2
Supply to each circuits
through DC-DC converter
PB5
1-3
DG2
G1
G-P.C.B
PB6
G3
1
1 +3.3VECO
3
+5V
3
5 STB_ON
CPU_LOWB_ON
6
7 PWR_DOWN
U_R8_TXD/RXDA/B Power ON : Hi
8-11
12 AC_OFF_ECOSTB
G2
ECO STANDBY=LOW (Power ON "Hi")
1 +16V_A
NORMAL STANDBY=Hi
Supply to FAN
2 +16V_B
Control circuit
3 +16V_C
G36
1 STB5V_USB1
USB Socket
3 STB5V_USB2
Output status
LOWB_ON
+3.3VECO +5VSTB +3.3VSTB 16V_A/B/C +12V
(PB3-8)
ー ー ー ー
Low ON
(OFF) (OFF) (OFF) (OFF)
ー ー
Low ON ON ON
(OFF) (OFF)
Hi ON ON ON ON ON
+3.3VSTB
IC3501
<MAIN CPU>
S-P.C.B
G17 S1
+3.3VECO 1 Control panel
3.3V_ECO 1
R-P.C.B
G9 R1
1 1 IR Receiver
RR-P.C.B
G14 RR1
IC6118
1 1
<SUB CPU>
RR3 13
BF1 13
IR Receiver
BF-P.C.B
+5V +3.3V +16V +380V
ー ー ー ー
(OFF) (OFF) (OFF) (OFF)
ー ー ー ー
(OFF) (OFF) (OFF) (Boost OFF)
ON
ON ON ON
(Boost)