Microcomputer's Terminal Description - Kenwood LZ-702IR Service Manual

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MICROCOMPUTER'S TERMINAL DESCRIPTION

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Pin No. Pin Name
49 POWER KEY
50 SCRN KEY
51 MODE KEY
52 VSEL KEY
53 VOL KEY-
54 VOL KEY+
55 A MUTE
56 NC
57 IR AGC SW
58 IR BAND SW
59 IR SURR SW
60 IR ON/OFF
61 NC
62 OSD HSYNC
63 VSY
64 OSD VSYNC
65 NC
66,67 TYPE 1,TYPE 0
68 TYPE 2
69 REV DET
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L 13942296513
70 PKG DET
71 ADC SW
72 PON
73,74 NC
75 Y0
76,77 X0,X1
78 MIRROR
79 ROM BUSY
80 FULL OSD
81 NTSC PAL
82~84 MODE3~MODE1
85~88 HPOS4~HPOS1
89 R IN
90 G IN
91 B IN
DIM SENS
92
/VCOM IN
93 YDATA
94 XDATA
95 VHOLD2
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96 HLF2
97 CVIN2
98 TVSETB
.
99 VCCE
100 CVIN1
I/O Application
I PWR key detection
I SCRN key detection
I MODE key detection
I V.SEL key detection
I VOL- key detection
I VOL+ key detection
O Audio mute
- Not used
O Infrared ray transmitter AGC ON/OFF
O Infrared ray transmitter frequency band switching
O Infrared ray transmitter surround ON/OFF
O Infrared ray transmitter ON/OFF
- Not used
I HSYNC for OSD (HDSH)
O VSYNC for auto gamma adjustment
I VSYNC for OSD (HDSV)
- Not used
I Destination switching
I NAVI OFF display switching
I Reverse detection
I Parking detection
O A/D port switching
O Power on
- Not used
O Touch panel control signal
O Touch panel control signal
O AV-IN2 mirror reversed image
I ROM correction BUSY signal
O FULL OSD output SYNC signal switching
O NTSC/PAL switching (to T-CON)
O Timing controller display mode setting
O Horizontal display starting position setting
Signal input for γ adjustment
I
Signal input for γ adjustment
I
Signal input for γ adjustment
I
I Dimmer sensor/γ adjustment
I Touch panel position
I Touch panel position
- Not used
- Not used
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I H-fixed
y
- Not used
i
- 5V power supply
I H-fixed
2 9
8
Processing / Operation / Description
If level is "L" when INT1 is detected, it is judged PWR
key is pressed.
"L" : It is judged SCRN key is pressed
"L" : It is judged MODE key is pressed
"L" : It is judged V.SEL key is pressed
"L" : It is judged VOL- key is pressed
"L" : It is judged VOL+ key is pressed
"L" : Mute of speaker or headphone is ON
"L" : AGC works
"L" : 2MHz band. "H" : 3MHz band
"L" : Surround works
"H" : Infrared ray is output
Refer to the truth value table q
"H" : No displaying. "L" : displaying
"L" : Reverse
Q Q
3 6 7 1 3 1 5
"H" : Parking
"H" : VCOM IN is selected at pin 92
"L" : DIM SENS is selected
"H" : Power supply of SWs are ON
Refer to the truth value table w
Refer to the truth value table w
"H" : Reverse
"H" : Any communications are inhibited except ROM
correction writing
"H" : FULL OSD displaying
"L" : NTSC. "H" : PAL
Refer to the truth value table e
Refer to the truth value table r
co
.
LZ-702IR
9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
9 9
7