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SWITCH UNIT (X16-394x-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 (X34-414x-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
Amplifi es 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 o5V
Q3,11
SW5V
When Q11’s base goes Hi, SW5V o5V
Q4,9
SW14V
When Q9’s base goes Hi, SW14V outputs 14V
Q5,6,10
AUDIO8V AVR
When Q10’s base goes Hi, A8V AVR outputs 8.0V
Q7,8
SERVO+B AVR
When Q8’s base goes Hi, S+B AVR outputs 7.5V
Q12
SW for IC12
When Q12’s base gose Lo, IC7 is turned on
Q13
PANEL 5V
When Q13’s base gose Lo, PANEL5V outputs 5V
Q101,102
P-ANT SW
When Q102’s base goes Hi, P-ANT SW outputs 14V
Q103,106
P-CON SW
When Q106’s 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’s base goes Lo, Q107 is turned on
Q108
Small lamp det SW
When Q108’s base goes Hi, Q108 is turned on
Q109
SERGE Det.
When Q109’s base goes Hi, IC4 is changed into a standby state
Q111
BU det
When Q111’s base gose Hi, Q111 is turned on
Q112
ACC det
When Q112’s 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’s base goes Hi, Tuner8V output 8V
Q300,301
AM+B
When Q301’s base goes Hi, AM+B is out
Q302,303
Tuner8V
When Q303’s base goes Hi, Tuner8V outputs 8V
Q305,306
SW ILL+B
When Q306’s base goes Hi, SW ILL+B outputs 11V
Q400~403
Pre-out mute SW
When a base goes Hi, Pre-out is muted
COMPONENTS DESCRIPTION
3
DPX302,DPX-MP2100
