Hitachi 55PMA550 Service Manual page 8

No. Pin Name
51 SCDT
52 HS-DJTR
53 AUD RST
54 AUD DET
55 SPRLY
56 MUTE
57 ASEL1
58 ASEL2
59 SDA2
60 SCL2
61
D-SUB COMP_SYNC.SW
62 VCC2
63 DSUB_DET1
64 VSS
65 TRAP-MAIN
66 DISPEN
67 DVI.SW
68 WSS
69 TV-AFC
70 FE.AGC_I
71 RESERVE
72 HDMI_DET_IN
73 CEC_IN
74 INT_HDMI
75 HDMI_VIDEO_SW
76 CEC_OUT
77 RESERVE
78 LCD_CONTROL
79 SCL0
80 SDA0
81 SCL3
82 SDA3
83 HDMI_CIR_DET
84 MSP.RESET
85 OSD_CS
86 FC_ENABLE
87 PARITY.SW
88 AVC1
89 TEXT-RESET
90 AD_KEY3
91 AD_KEY2
92 AD_KEY1
93 TV_POWER
94 DIP.DET
95 LED_RED
96 AVSS
97 FAN_ALARM
98 VREF
99 AVCC
100 AVC2
55PMA550/55HDM71 (PW1)
I/O
I RESERVE : Always High-Impedance
O Jitter Control (DVI) : Always Low
O RESET for LIPSYNC IC
I Detecting Connection of LIPSYNC IC (L: Yes, H: No)
O SPEAKER ON/OFF Relay Control (L: ON(MUTE-OFF), H: OFF(MUTE-ON))
O AUDIO MUTE (L: MUTE-OFF, H: MUTE-ON)
O AUDIO Signal SW (D-sub,AVC: L, VIDEO,DVI: H)
O AUDIO Signal SW (VIDEO,AVC: L, DVI,D-sub: H)
I/O IIC-BUS CONTROL DATA (Sync-Sep., Audio Processor etc.)
O IIC-BUS CONTROL CLOCK (Sync-Sep., Audio Processor etc.)
O SYNC-SW (D-sub_Component: H, Others: L)
I 5V
I RGB1-DET
I GND
O L: TRAP OFF (1080i,720p), H: TRAP ON (576i/p,480i/p)
O NC
O L: Analog, H: Digital (DVI)
I STATUS(WSS) of SCART INPUT (AV4) (L: No Signal, M: 4:3, H: 16:9)
I AFC Voltage (F/E)
I AGC Voltage (F/E)
- NC
O
NC
I
NC
I NC
I/O NC
NC
O
- NC
O
Low
O IIC-BUS CONTROL CLOCK (VIDEO PWB)
I/O IIC-BUS CONTROL DATA (VIDEO PWB)
O IIC-BUS CONTROL CLOCK (EEPROM)
I/O IIC-BUS CONTROL DATA (EEPROM)
I NC
O RESET (MPX)
O OSD CHIP SELECT
O FC ENABLE
O L: FC4, H: AVC
I Detecting AVC Connection/Power (No Power or Without 24pin Cable : L, Others : H)
O RESET (T/TEXT)
I AD KEY3: POWER
I AD KEY2: PR UP/DWN, VOL UP/DWN, MENU
I AD KEY1: INPUT
O POWER ON/OFF (L: STANDBY, H: ON/PowerSave)
I L: Normal(No DIP), H: Abnormal(Detect DIP)
O L: LED ON (Standby/PowerSave), H: LED OFF (PowerON)
I GND
I L: Normal, H: Abnormal
I 5V
I 5V
I
Detecting AVC Connection/Power (No Power or Without 8pin Cable : L, Others : H)
Function
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