(No.WA063<Rev.003>)8/31
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1
COMPONENTS DESCRIPTION
2.1.1 ELECTRIC UNIT (X34-747x-xx)
2.1.2 SWITCH UNIT (X16-743x-xx)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
Power Supply IC
Output 3.3V
×
2, 8V, 8.5V,10.5V, P-CON, P-ANT
IC21
1.2V AVR IC
Power supply for Back up+1.2V(to u-com)
IC51
Switching Regulator
Power supply for D+6V(to Power supply IC/USB5V AVR IC)
IC61
Switching Regulator
Power supply for D+3.3V(to BT/CD/Panel Fil)
IC71
USB5V AVR IC
Power supply for USB5V(to USB/2DIN Panel/SXM)
IC91
Hi-side SW
Detection of USB Over Current
IC131
Muting logic IC
Controls logic for muting
IC201
Power IC
Amplifies the front L/R and the rear L/R to 50W maximum.
IC251
E-Vol
Controls the source, volume, tone.
IC301
TUNER IC
AM/FM radio receiver.
IC302
1.2V AVR IC
Power supply for D+1.2V(to Tuner IC)
IC461
Level shift
3.3V to 5V(Communicates with SXM Tuner).
IC462
Level shift
5V to 3.3V(Communicates with SXM Tuner).
IC701
DAC3.3V AVR IC
Power supply for DAC3.3V(to CD mechanism)
IC801
System u-com
Controls FM/AM tuner, CD mechanism, Panel, volume and tone etc.
IC831
Flash ROM
For memory of syscom software
IC841
Reset IC
''Lo'' when detection voltage goes below 2.8V
IC851
EEPROM
For Log memory etc
IC861
iPod Authentication IC
For Apple authentication.
Q131
SERGE Det.
When Q131's base goes Hi, Serge voltage is detected.
Q132
BU.Det.
ON when the base goes "Hi"during BU is applied.
Q133
ACC Det.
ON when the base goes "Hi"during ACC is applied.
Q134
ILLUMI Det.
When Q105's base goes Hi, Illumi is detected.
Q231,Q232
Pre-out mute SW
When a base goes Hi, Pre-out is muted.
Q233,Q234
Pre-out mute SW
When a base goes Hi, Pre-out is muted.
Q235,Q236
Pre-out mute SW
When a base goes Hi, Pre-out is muted.
Q237
Mute driver for PRE OUT
ON when the base goes "Lo".
Q402
A+5V AVR
When Q402's base goes Hi, AVR outputs 5V
Q701,Q702
SW3.3V SW
When Q702's base goes Hi, AVR outputs 3.3V
Q703,Q704
DAC3.3V SW
When Q704's base goes Hi, AVR outputs 3.3V
Q861
iPod3.3V SW
ON when the base goes "Lo".
Q901
Panel 3V SW
ON when the base goes "Lo".
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC601
LCD Driver
Controls LCD and Key
IC602
Remote Control Sensor
Output remote signal when IR of Remote controler
IC603
LED Driver
LED is controlled. (D602,603,604,605,606,607,609,610,611,608)
IC604
LED Driver
LED is controlled. (D608,615)
Q601
Variable LED drive
BLUE of D602,603,604,605,606,607 are turned on when Q601 turn on.
Q602
Variable LED drive
GREEN of D602,603,604,605,606,607 are turned on when Q602 turn on.
Q603
Variable LED drive
RED of D602,603,604,605,606,607 are turned on when Q603 turn on.
