Switch Unit (X25-929X-Xx) - Kenwood GX-201KEF2 Service Manual

QQ
3 7 63 1515 0
Ref. No.
Q802 Illumination + detection
Q803 Reset output switch for F-BUS
Q804 NAVI mute switch
Q805 IF count detection
Q806 P-ANT circuit control switch
Q807 ACC detection
Q808 IGN detection
Q809 SYS_ON current buffer
Q810 Hard reset switch
Q812 BUS_OFF switch
Q813 P-ON5V power supply switch
Q815 BU detection
Q816 P-ANT circuit control switch
Q817,818 P-ANT circuit protection
Q820 F-BUS mute output
Q821 BUS_ON detection
Q822 BUS_ON switch
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L 13942296513
Q850,852 Illumination - detection switch
Q853 Illumination - detection switch

SWITCH UNIT (X25-929x-xx)

Ref. No.
Display control µ-com
IC1
IC3 EEPROM
Q1 Audio VFD5V switch
Q2 Audio VFD5V switch
Q4 Heater VFD5V switch
Q5 Heater VFD5V switch
Q11 F differential indicator power supply switch
Q12 R differential indicator power supply switch
Q21 Multiple-push reset circuit detection
Q22 Multiple-push reset circuit detection
Q23 Multiple-push reset circuit detection
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Q24 Heater UART communication control
Q25 Heater UART communication control
Q26 SW5V power supply switch
.
Q27 Panel illumination switch
COMPONENTS DESCRIPTION
Application / Function
Application / Function
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i
GX-201KEF2/LEF2/REF2/SEF2
2 9
8
Operation / Condition / Compatibility
For illumination + detection
When resetting F-BUS, Hi output
When muting NAVI, Hi output
When detecting IF count, Lo output
When tuner, GND electric potential output
When ACC ON detection, Lo output
When IGN ON detection, Lo output
When SYS_ON Hi, Lo output
When HARD_RESET ON, Lo output
When F-BUS system OFF, Hi output
For P-ON5V
When BU ON, Lo output
When tuner, BU electric potential output
P-ANT short circuit protection
When mute ON, Hi output
When F-BUS system ON, Hi input
When F-BUS system ON, Hi output
Q Q
3 6 7 1 3 1 5
When detecting illumination -, Hi output
When detecting illumination -, Lo output
Operation / Condition / Compatibility
VFD control, Key intake
For bug counter-measures
When audio VFD ON, 5V output
When audio DC/DC ON, Lo output
When heater VFD ON, 5V output
When heater DC/DC ON, Lo output
When F-differential indicator ON, 5V output
When R-differential indicator ON, 5V output
When detecting REP/RDM, DWN_SEEK, Hi output
When resetting by multiple push, Lo output
When TONE (BAL/FAD) detected, Lo output
Heater UART communication control (TX)
Heater UART communication control (RX)
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When IGN ON, 5V output
.
When panel illumination ON, 10V output
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9
5