Pioneer PDP-V402, Service Manual

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PDP-V402
167
No. Pin Name I/O Description
23 KEY_IN I Main key input port H: Normal
0-5V serial signal input when main key input (active low)
24 CNVSS u-com operation mode control L: Normal Add +12V in built-in flash memory renewal
25 *RST Reset input Active L
Reset input (Keep L level more than 2msec power supply voltage is 4.0-5.5V and when Xin oscillation constantly)
26 POWER O POWER ON/OFF PORT L: During standby H: Normal operation
27 N.C. I No Care (10k
Ω
pull down)
28 X_IN Clock input 9.98MHz sine wave
29 X_OUT Clock output 9.98MHz sine wave
30 VSS Power supply input Standby GND
31 N.C. I No Care (10k
Ω
pull down)
32 MASK_COL O NTSC masking color assignment L: During standby
H: In masking color ashes setting to go up and down in NTSC signal input, L: Other condition
33 DHIZASEL O Dither ON/OFF switching port
L: Standby, MP mode off, INPUT1, 2 select H: MP mode on
34 PNELBUSY I Panel u-com BUSY input
H: In panel u-com reception processing state, command processing condition (Command, downlink impossibility)
L: In panel u-com command information desk condition (Command, downlink are possible)
35 PNEL_CEB O Panel micon data output enable output Chip/enable for OSD (active low)
L: During standby, communication, H: Normal
36 D_POWER I Panel drive OK input (Not used)
37 LED_POW O Power ON status display LED output L: Green LED (in normal operation) lighting H: Other condition
38 LED_STB O Power standby status display LED output L: Red LED lighting (standby condition), H: Other condition
39 N.C. I No Care (10k
Ω
pull down)
40 V_MUTE O Analog video mute output
L: During standby, switching function, VIDEO mute
H: Normal, VIDEO, Y/C input, RGB1, RGB2 input, VIDEO mute off
41 HZ50_60 I NTSC/PAL distinction input port L: Input
42 NTSC_PAL O NTSC/PAL distinction effect listing PORT H: Output
43 RGB_SEL O Switching RGB1/2 No care: INPUT1 (VIDEO), INPUT2 (Y/C)
H: INPUT3 (RGB1input), L: INPUT4 (RGB2input)
44 RGB_SW O Switching RGB H: INPUT1 (VIDEO), INPUT2 (Y/C), INPUT3,4 (RGB input)
45 Y_C_SW O Switching VIDEO,Y/C L: INPUT1 (VIDEO), H: INPUT2 (Y/C), L: INPUT3,4 (RGB input)
46 OSD_CEB O OSD IC ENABLE Chip/enable forOSD (active low) L: During standby, H: Normal
47 DAC_CEB O D/A converter ENABLE PORT Chip/enable for DAC (active low)
L: During standby, communication, H: Normal
48 EMG_OUT O EMERGENCY output L: During standby Normally, L output
49 (E) SCL I/O Clock for E2PROM H: During standby Normally, H output
50 (E) SDA I/O Data for E2PROM H: During standby Normally, H output
51 P_MUTE O SFM output license (H) / disabling (L)port
L: During standby, Normally,H output, Panel mute: L output
52 NTSC O Model distinction listing (NTSC)
L: At the time of run actuating free input signal by NTSC, PAL or no input, signaling for a fault
H: except NTSC and PAL