HITACHI P42H401A
Circuit Diagrams

SD (Also for Photos in the T, V and X series models) SD CARD or MMC

PPM2

Upgrade Software HDMI DDC ROM IH03 IH04, IH05 SWITCH CXB1441 I405 PI4C3390 I403

POWER SUPPLY

HDMI SIDE

HDMI-2 HDMI-1

FACTOR USE ONLY "FLASH"
BECKHAM PVM

16V Both are actually 10V

+16V +12V

Pin 9 Pins 13,14,15 Pin 7

ANTENNA Oberon2 IW01

Video 1 In (Y-C-V / L/R) Video 1 - 3 (Y Pr / Pb / Y-C-V) Video 2 In (Y-Pr-Pb / V / L/R) Video 3 In (Y-Pr-Pb / V / L/R) Video 4 In (Y-C-V / L/R) Video 1 - 3 Audio in (L / R)
MAIN L/R

Monitor Out Monitor Audio Out (L/R) 5V to 3.3V IL01 Level Shifter 2nd Fan (Panel) with sufix (S/V or X) GS00697 GS00696 FAN Not in 42" models with sufix (A) Fan Control TK73400 IP03
I2C2 UART0 I2C0 I2C1 UART3 MAIN L/R SUB L/R PNL-On OPT Audio Switch IF04 Audio DSP NJU26040 IF05 36.864Meg UART1 SD CARD TUNER RESET I2C1 RESET DSP-REST RESET 1 SYS-REST S-REST PNL-REST HD CLOCK SW SS

OPT Out Optical Audio

USB 2.0 CableCard

+10V +5.6V

AC IN

CNPPS CN63 CN1

(P50X901, P60X901, P50V701) only
PFA1
POD Digital/Analog Tuner (US) VP12HSR UT01 OOB Tuner CABLE (Out of Band) PFA2 (Models with 2 fans) TS Switch S to P PNL-ON TS0 MPEG (6:0) MPEG (7:0) SBCLK RESET1 CRX, DRX

Regulator TK73650 I2U1

Pin 1,2,3

D+1.8V
SBCLK (66M)

DC/DC MP2361 IG03

PSU
D+1.3V
DC/DC MP2361 IG01 DC/DC TPS54310 IG02 Only High momentarily when AC removed Delay IG06

POWER SWITCH FILTER PWB

CN61

PTW

SBY +5V

Pin 1

PPM1 EC01 PSPK PSL PSC

(P50X901, P60X901, P50V701) Only
VSB/QAM Demodulator T314/T312 IT02

PLL (20Meg) POWEROFF POWER 2_Td DELAY IG06, IG07

D+3.3V

Power Off POWER2

Pin 4 Pin 7

CN68
7 Vcego Vsago 8 8 7

POWER 2_Td POWER1 FLASH One NAND Max 64Mb I103 I107 DDR2 SDRAM 512Mbit X 4 333MHz I301-I304 SYSRST RESET I104 AC Clock I2C2 Pin 6 Pin 5

CN6

I2C0 25.14Meg IR OUT RS232C MAX202 IY03 IY01 IY02 IR BLASTER 9DR32DW8 IM01

Pin 49 and 50 SDA/SCL Vsago turns on Va/Vs Vcego turns on Vcc 5.1V PNL ON turns on Vsago

RS232C G-LINK

POD JP55141
CableCard
Key ROM TC9K111 I406 Main V Main SY Main Y Main C CLAMP ADC GCA ADC 3DYC HDMI RX DDC HDMI (L/R) SW

PNLRST turn on Vcego

PCI EXTB POD JTAG

CY2305C I106

PANEL Logic PWB
LAMPCNT PWM to DC Not for Plasma Not Used In Plasma

PWM

Regulator TK11125CS IC02

DVC
Main Pb CLAMP ADC Main Pr LVDS TX LVDS/Video (Single) LVDS/Video (Duel) LVTTL/Video LVDS RX LVDS TX LVDS (Single) LVDS (Duel) Duel (Used only V/S/X) 40 - 27 24 - 11 43 PNLRST 42 PNL ON

"LVDS Duel" TA2-TE2 (Used only V/S/X models) TA1-TE1 (Pins 12 through 27) TA2-TE2 (Pins 28 through 41) Pin 9 (CPUGO) Pin 10 (PDPGO) See CN68 Connector Notes about PNLRST, PNLON PWM SD CLK (54Meg) USB (48Meg) CY22391-03 IE01 VCX0

Tuner-Main Video

PMS1 to PSM

Tuner-Main L/R Audio

CLAMP ADC

DDRC

VCR out

DAC

LPF

27Meg

SYNC

CG TX49H4 333MHz 42MHz SRC AK4121 IF01

TERMINAL PWB

I001

Video SW Audio SW R2S11007

PLL (54Meg) PLL (48Meg) PLL (54.054Meg)

FC8
DDR2 SDRAM 256Mbit X 3 333MHz

Audio (36.864Meg) PLL (36.864Meg) Audio (18.432Meg)

18.432MHz

PLL (18.432Meg) PLL (24.576Meg)

FC8
Audio ADC PCM1808 IF02 Audio ADC PCM1808 IF03 18.432M Switch IF09 CY24902 IE03 PCI CLK CY2305C IE04 18.432M IRQ TSP ASP AEP RESET 2 OneNAND assist PWM CY22388 IE02 VCXO PLL (20Meg) PLL (54Meg) PLL (54.054Meg) Switch IE07, IE08 DC/DC TPS54310 POWER 2_Td iLink (27Meg) SS PLL (33.333Meg) RESET2

Video 4 in (Y C/V)
SUB L/R

Video 4 Audio in (L/R) Main L/R MUTE Sub L/R SD Y/C
TS0 TS3 Switch I901

27Meg

DC/DC TPS54310

SD CLK 54Meg POWER 2

Monitor (Y-C-V)

P42H401A, P42H4011A, P42T501A Does not use a fan
MUTE Sub Y/V PNL-ON MUTE I/O SW 54.054Meg

PLL (39.9875M) PLL (74.9875M) PLL (79.7142M) PLL (79.9750M)

FC8 (27Meg) IE05 CY24901 I2C1

CY24900 IE06

PLL (54.054M)

NOTE
SBY Pow Block
Digital AMP TAS5142 PWM TAS5086 IF06 IF07

Swivel

Motor Driver BA6287F IP05

LAN Initialize

+12V Pow Block +10V Pow Block +5.6V Pow Block

Swivel Motor Drive Optical Audio
UEI

G-TXD, G-RXD MDM-DCD, RESET

POWER1 SYNC SEP SYNC SEP UEI FAN DET TV AFC RS232C Swivel POWER OFF Sub CPU M306H5 IH01 SW 5V to 3.3V QH01-QH04 (Level Shifter)
UART2

Audio DAC WM8620 IF12 Audio DAC WM8620 IF13

Power Line Power Control Clock Reset 1, 2 Others

CH5

RESET1-IN

ASP, AEP-RESET

DW-3 DIGITAL MODULE BLOCK DIAGRAM

(10Meg) SD Y, C AEP L, R ASP L, R

S / PDIF MUTE

PLS PCST

LED

LED PWB LED IR CONTROL PWB

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Audio / Opt
TC7SZ125FU IF20 Peripheral

IR Key

Key

9