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DPX502/502U/502UY
DPX-MP5100U
●
ELECTRIC UNIT (X34-560x-xx)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
SW Regulator
Outputs 5.0V. Power supply for D5V, FL+B and USB5V
IC2
A8V REF Power Supply
Outputs 1.27V
IC100
Reset IC
Lo when detection voltage goes below 3.6V
IC101
E2PROM
For installer memory and ROM correction
IC102
System µ-COM
Controls FM/AM tuner, the changer, CD mechanism, USB, panel, volume and tone
IC103
Muting Logic IC
Controls muting logic
IC200
Hi-side SW
Over-current protection of USB power supply
When pin1 goes Hi , USB5V is ON
IC300
E-VOL
Controls the source, volume and tone
IC400
Power IC
Amplifi es the front L/R and the rear L/R to maximum 50W
IC500
RDS Decoder
For RDS
IC700
D/A Converter
For CD and USB Source
IC702
iPod Authentication Coprocessor
For iPod authentication
IC703
Digital Audio Receiver
For CD source
IC704
OP-AMP
LPF
IC705
Point Regulator
Outputs 5.0V. Power supply for D/A converter
IC708
DC Voltage Regulator
Outputs 3.3V. Power supply for 3.3V
IC709,710
Inverted 3-State Output
It converts 3.3V to 5V
IC711
System On Chip
It can decode MP3 or other types fi le of audio/decompression standards by
software based architecture
IC712
Quad 2-Input AND Gate
It converts 5V to 3.3V
IC714
SD RAM
For System On Chip (IC711)
IC715
NOR Flash ROM
For System On Chip (IC711)
IC716
LDO Regulator
Outputs 1.8V. Power supply for System On Chip (IC711)
Q1,2,16
AUDIO8V AVR
When Q16’s base goes Hi, A8V AVR outputs 8.0V
Q3,4
BU5V AVR
While BU is applied, BU5V AVR o5V
Q5,7
SERVO+B AVR
When Q7’s base goes Hi, SERVO+B AVR outputs 7.5V
Q6,17
SW14V
When Q17’s base goes Hi, SW14V outputs 14V
Q8,9
Serge Protect for IC1
Outputs 20V when BU is over 20V
Q10~12,18
ILL+B AVR
When Q18’s base goes Hi, ILL+B outputs 10.5V
Q13,14
SW5V
When Q14’s base goes Hi, SW5V o5V
Q15
PANEL 5V
When the base goes Lo, PANEL 5V outputs 5V
Q50,58
P-CON SW
When Q50’s base goes Hi, AVR outputs 14V
Q51
BU DET
When the base goes Hi, Q51 is turned ON
Q52,54
P-CON Protection
When P-CON output voltage decrease is detected, output protection is made.
When P-CON SW is ON, malfunction of Q58 is protected
Q53,56
P-ANT SW
When Q53’s base goes Hi, P-ANT SW outputs 14V
Q57
ACC DET
When the base goes Hi, Q57 is turned on
Q59
Serge DET
When the base goes Hi, BU DET is turned off
Q60
Small Lamp DET SW
When the base goes Hi, Q60 is turned on
Q500,501
AM+B
When Q501’s base goes Hi, AM+B is output
COMPONENTS DESCRIPTION