Components Description - Kenwood DPX502 Service Manual

DPX502/502U/502UY
DPX-MP5100U
● ELECTRIC UNIT (X34-560x-xx)
Ref. No.
IC1 SW Regulator
IC2 A8V REF Power Supply
IC100 Reset IC
IC101 E2PROM
IC102 System µ-COM
IC103 Muting Logic IC
IC200 Hi-side SW
IC300 E-VOL
IC400 Power IC
IC500 RDS Decoder
IC700 D/A Converter
IC702 iPod Authentication Coprocessor
IC703 Digital Audio Receiver
IC704 OP-AMP
IC705 Point Regulator
IC708 DC Voltage Regulator
IC709,710 Inverted 3-State Output
IC711 System On Chip
IC712 Quad 2-Input AND Gate
IC714 SD RAM
IC715 NOR Flash ROM
IC716 LDO Regulator
Q1,2,16 AUDIO8V AVR
Q3,4 BU5V AVR
Q5,7 SERVO+B AVR
Q6,17 SW14V
Q8,9 Serge Protect for IC1
Q10~12,18 ILL+B AVR
Q13,14 SW5V
Q15 PANEL 5V
Q50,58 P-CON SW
Q51 BU DET
Q52,54 P-CON Protection
Q53,56 P-ANT SW
Q57 ACC DET
Q59 Serge DET
Q60 Small Lamp DET SW
Q500,501 AM+B
4

COMPONENTS DESCRIPTION

Application / Function
Outputs 5.0V. Power supply for D5V, FL+B and USB5V
Outputs 1.27V
Lo when detection voltage goes below 3.6V
For installer memory and ROM correction
Controls FM/AM tuner, the changer, CD mechanism, USB, panel, volume and tone
Controls muting logic
Over-current protection of USB power supply
When pin1 goes Hi , USB5V is ON
Controls the source, volume and tone
Amplifi es the front L/R and the rear L/R to maximum 50W
For RDS
For CD and USB Source
For iPod authentication
For CD source
LPF
Outputs 5.0V. Power supply for D/A converter
Outputs 3.3V. Power supply for 3.3V
It converts 3.3V to 5V
It can decode MP3 or other types fi le of audio/decompression standards by
software based architecture
It converts 5V to 3.3V
For System On Chip (IC711)
For System On Chip (IC711)
Outputs 1.8V. Power supply for System On Chip (IC711)
When Q16's base goes Hi, A8V AVR outputs 8.0V
While BU is applied, BU5V AVR outputs +5V
When Q7's base goes Hi, SERVO+B AVR outputs 7.5V
When Q17's base goes Hi, SW14V outputs 14V
Outputs 20V when BU is over 20V
When Q18's base goes Hi, ILL+B outputs 10.5V
When Q14's base goes Hi, SW5V outputs +5V
When the base goes Lo, PANEL 5V outputs 5V
When Q50's base goes Hi, AVR outputs 14V
When the base goes Hi, Q51 is turned ON
When P-CON output voltage decrease is detected, output protection is made.
When P-CON SW is ON, malfunction of Q58 is protected
When Q53's base goes Hi, P-ANT SW outputs 14V
When the base goes Hi, Q57 is turned on
When the base goes Hi, BU DET is turned off
When the base goes Hi, Q60 is turned on
When Q501's base goes Hi, AM+B is output
Operation / Condition / Compatibility