Hitachi 17LD4220, Service Manual

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11
17” TFT TV Service Manual 21/09/2004
30 GND
LLC
SUPPLYD X Ground, LLC Circuitry
31 Y7 OUT GND
Y
Picture Bus Luma (MSB)
32 Y6 OUT GND
Y
Picture Bus Luma
33 Y5 OUT GND
Y
Picture Bus Luma
34 Y4 OUT GND
Y
Picture Bus Luma
35 GND
Y
SUPPLYD X Ground, Luma Output Circuitry
36 V
SUPY
SUPPLYD X Supply Voltage, Luma Output Circuitry
37 Y3 OUT GND
Y
Picture Bus Luma
38 Y2 OUT GND
Y
Picture Bus Luma
39 Y1 OUT GND
Y
Picture Bus Luma
40 Y0 OUT GND
Y
Picture Bus Luma (LSB)
41 C7 OUT GND
C
Picture Bus Chroma (MSB)
42 C6 OUT GND
C
Picture Bus Chroma
43 C5 OUT GND
C
Picture Bus Chroma
44 C4 OUT GND
C
Picture Bus Chroma
45 V
SUPC
SUPPLYD X Supply Voltage, Chroma Output Circuitry
46 GND
C
SUPPLYD X Ground, Chroma Output Circuitry
47 C3 OUT GND
C
Picture Bus Chroma
48 C2 OUT GND
C
Picture Bus Chroma
49 C1 OUT GND
C
Picture Bus Chroma
50 C0 OUT GND
C
Picture Bus Chroma (LSB)
51 GND
SY
SUPPLYD X Ground Sync Pad Circuitry
52 V
SUPSY
SUPPLYD X Supply Voltage, Sync Pad Circuitry
53 INTLC OUT LV Interlace Output
54 AVO OUT LV Active Video Output
55 FSY/HC/HSYA OUT LV Front Sync/ Horizontal Clamp Pulse/Front-End
Horizontal Sync Output
56 MSY/HS IN/OUT LV Main Sync/Horizontal Sync Pulse
57 VS OUT LV Vertical Sync Pulse
58 FPDAT/VSYA IN/OUT LV Front End/Back-End Data/Front-End Vertical Sync
Output
59 V
STBYY
SUPPLYA X Standby Supply Voltage
60 CLK5 OUT LV CCU 5 MHz Clock Output
61 NC - LV or GND
D
Not Connected
62 XTAL1 IN X Analog Crystal Input
63 XTAL2 OUT X Analog Crystal Output
64 ASGF X Analog Shield GND
F
65 GND
F
SUPPLYA X Ground, Analog Front-End
66 VRT OUTPUT X Reference Voltage Top, Analog
67 I2CSEL IN X I
2
C Bus Address Select
68 ISGND SUPPLYA X Signal Ground for Analog Input, connect to GND
F
69 V
SUPF
SUPPLYA X Supply Voltage, Analog Front-End
70 VOUT OUT LV Analog Video Output
71 CIN IN LV Chroma/Analog Video 5 Input
72 VIN1 IN VRT Video 1 Analog Input
73 VIN2 IN VRT Video 2 Analog Input
74 VIN3 IN VRT Video 3 Analog Input
75 VIN4 IN VRT Video 4 Analog Input
76 V
SUPAI
SUPPLYA X Supply Voltage, Analog Component Inputs Front-End
77 GND
AI
SUPPLYA X Ground, Analog Component Inputs Front-End
78 VREF OUTPUT X Reference Voltage Top, Analog Component Inputs
Front-End
79 FB1IN IN VREF Fast Blank Input
80 AISGND SUPPLYA X Signal Ground for Analog Component Inputs, connect
to GND
AI