3
DPX301
DPX-MP2090/MP2090S
COMPONENTS DESCRIPTION
●SWITCH UNIT (X16-3530-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 Remote Control IC
Q1~3 GRID_DRIVER Each Transister’s base is “L” then GRID is On
Q6,7 SW5V The power supply of IC1 is turned on when Q6’s base level goes “L”
Q9 RED SW RED LED is turned on when Q9’s base level goes “H”
Q12 VFD RESTART Key scan start at Q12’s Base goes “H”when the SET’s Power is On
●ELECTRIC UNIT (X34-4140-xx)
Ref. No. Application / Function Operation / Condition / Compatibility
IC1 System µ-COM Controls FM/AM tuner, the changer, CD mechanism, Panel, volume and tone
IC2 E.Vol Controls the source, volume, tone
IC3 A8V Ref Power Supply Output 1.27V
IC4 Power IC Amplifies the front L/R and the rear L/R to 50W maximum.
IC5 ILL+B Power Supply Output 1.225V
IC6 Muting logic IC Controls logic for muting
IC7 Reset IC “L” when detection voltage goes below 3.6V or less
IC12 SW Regulator Power Supply for mp3 and VFD
Q1,2 B.U.5V AVR While BU is applied, BU5V AVR outputs +5V
Q3,11 SW5V When Q11’base goes Hi, SW5V outputs +5V
Q4,9 SW14V When Q9’base goes Hi, SW14V outputs 14V
Q5,6,10 AUDIO8V AVR When Q10’base goes Hi, A8V AVR outputs 8.0V
Q7,8 SERVO+B AVR When Q8’base goes Hi, S+B AVR outputs 7.5V
Q12 SW for IC12 When Q12’base gose Lo, IC7 is turned on
Q13 PANEL 5V When Q13’base gose Lo, PANEL5V outputs 5V
Q101,102 P-ANT SW When Q102’base goes Hi, P-ANT SW outputs 14V
Q103,106 P-CON SW When Q106’base goes Hi, AVR outputs 14V
Q104,105 P-CON Protection Protect Q103 by turning on when P-CON output is grounded
Q107 EXT-AMP-CON When Q107’base goes Lo, Q107 is turned on
Q108 Small lamp det SW When Q108’base goes Hi, Q108 is turned on
Q109 SERGE Det. When Q109’base goes Hi, IC4 is changed into a standby state
Q111 BU det When Q111’base gose Hi, Q111 is turned on
Q112 ACC det When Q112’base gose Hi, Q112 is turned on
Q113 Mute-Driver When a base gose Hi, Pre-out mute driver is turned on
Q114 Mute-Driver Q114 turned on by RST
Q115,116 Pre-out mute driver When a base gose Lo, mute driver is turned on
Q298,299 Tuner8V SW When Q299’base goes Hi, Tuner8V output 8V
Q300,301 AM+B When Q301’base goes Hi, AM+B is out
Q302,303 Tuner8V When Q303’base goes Hi, Tuner8V outputs 8V
Q305,306 SW ILL+B When Q306’base goes Hi, SW ILL+B outputs 11V
Q400~403
Pre-out mute SW When a base goes Hi, Pre-out is muted
