Parts/Service for 55PD8800TA(PW3)/37LD8800TA(PW3L)

Parts/Service for 55PD8800TA(PW3)/37LD8800TA(PW3L)

Brand: HITACHI

Category: TV

Document Type: Parts/Service

Language: EN

Uploaded: Nov. 21, 2025, 7:22 p.m.

Manual Publish Date: 2005-11-01

How to get to Adjustment mode

Using the front control buttons with the set turned off (standby) can activate it. Press the SUB-POWER button, INPUT SELECT button and button at the same time, and hold for more than 5 seconds. The set turns on in adjustment mode with OSD.

Changing data and Selecting Adjustment code

When the set is in adjustment mode, the cursor and OK buttons of the remote control or front panel may be used as the adjustment keys. ▲, buttons are used for selecting adjustment code. buttons are used for changing data values. OK button is used for confirming the data. After finishing the necessary adjustment press MENU button. Adjustment mode is released and the set returns to normal condition.

Memory Initialize operation

NOTE: The execution of this function returns the adjustment codes to the preset values, therefore, adjustment data will be lost.

Procedure

(1) Enter Adjustment Mode. (2) Select MEMORY INIT adjustment code (No.818) and change the data value from 0 to 1. (3) Activate MEMORY INIT by pressing OK button. (4) Select No.712 and change data value from 1 to 0. (5) Check that the receiving channel goes to P1. Unit is set to preset values.

Troubleshooting and error codes

No. PIN NAME I/O Panel: PDP/LCD FUNCTION
1 VREF (+5.0V) PDP/LCD 5V
2 +5.0V PDP/LCD 5V
3 AUDIO_SW1 I/O PDP/LCD Audio SW1
4 OSD DATA I/O PDP/LCD OSD DATA
5 OSD CLK I/O PDP/LCD OSD CLK
6 HP VOL I/O PDP/LCD Head Phone Volume
7 FUNC_1 I/O PDP/LCD Function1
8 DATA_OUT(FC) I/O PDP/LCD FC MicroComputer 3 Lines Bus Data Out /Media Data Out
9 DATA_IN(FC) I/O PDP/LCD FC MicroComputer 3 Lines Bus Data In/ Media Data In
10 CLK(FC) I/O PDP/LCD FC MicroComputer 3 Lines Bus Clock/ Media Clock
11 BL INST I/O PDP/LCD Black Insert On/Off for 32V LCD (37V=Low)
12 BL BLINK I/O PDP/LCD Backlight Blink On/Off for 32V LCD (37V=Low)
13 GND PDP/LCD GND
14 CNVSS(FLASH) PDP/LCD CNVSS(FLASH)
15 DSUB COMP I/O PDP/LCD Sync Switching
16 RGBSW I/O PDP/LCD Sync Switching
17 RESET PDP/LCD Reset
18 16MHz Oscillation O PDP/LCD OSC-OUT
19 GND PDP/LCD GND
20 16MHz Oscillation PDP/LCD OSC-IN
21 +5.0V PDP/LCD 5V
22 NMI(+5.0V) PDP/LCD 5V PULL UP
23 RMCON I/O PDP/LCD Receiving Remote Control Signal
24 NC I/O PDP/LCD NC
25 V.FREQ 3 I/O PDP/LCD V.Frequency
26 SCV.SYNC I/O PDP/LCD SUB_Y.SYNC (Composite)
27 IRQ (PM-IRQ) I/O PDP/LCD PDP Control
28 MCV.SYNC I/O PDP/LCD MAIN_Y.SYNC (Composite)
29 POWER_LED I/O PDP/LCD L:Lighting (Power Save)
30 FUNC_2 I/O PDP/LCD Function2
31 CEC_OUT I/O PDP/LCD CEC OUT(CEC1)
32 H.FREQ_3 I/O PDP/LCD H.Frequency
33 PDWN I/O PDP/LCD Panel LVDS
34 RXD2 I/O PDP/LCD RS-232C Communication
35 TXD2 I/O PDP/LCD RS-232C Communication
36 TXD1(RS232C/FLASH) I/O PDP/LCD FLASH for Writing
37 PDP/LCD 5V
38 RXD1(RS232C/FLASH) I/O PDP/LCD FLASH for Writing
39 PDP/LCD GND
40 SCLK(FLASH) I/O PDP/LCD FLASH for Writing
41 BUSY(FLASH) I/O PDP/LCD FLASH for Writing
42 TXD0(DTT) I/O PDP/LCD DTT
43 RXD0(DTT) I/O PDP/LCD DTT
44 SDA4(panel) I/O PDP/LCD PDP Communication (I2C Bus)
45 SCL4(panel) I/O PDP/LCD PDP Communication (I2C Bus)
46 M ENABLE I/O PDP/LCD Media Enable
47 M_SCLK I/O PDP/LCD Media Clock
48 M SDA I/O PDP/LCD Media Data
49 M_WAKEUP I/O PDP/LCD Media Wakeup
50 PDPGO(PM_ON) I/O PDP/LCD PDP Control/LCD Panel 12V/WVGA Power
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