KDC-W808/X689
5
Ref. No.
Application / Function
Operation / Condition / Compatibility
Q206
Ext Amp Control Buffer
It is buffer for IC102 output.
Q207
Small-lamp Detect SW
When Q207’ base goes Hi, Small-lamp is detected.
Q208, 209
Power Antenna SW
When Q206’ base goes Hi, power antenna switch outputs 14V.
Q210~213
Power control
Q402,403
AM+B SW
When Q403’ base gose Hi, AM+B is outputs.
Q500
Spectrum analyzer AGC Controller
When this circuit has an excessive input, a return is hung and an
output is reduced.
Q600~602
Pre-Amp +9V AVR
Q600 and 602 works as a differential amplifier, Q601 works as a
driver and +9.4V is supplied to OP Amp for Pre-out.
Q603~605
Pre-Amp -9V AVR
Q603 and 605 works as a differential amplifier, Q604 works as a
driver and -9.1V is supplied to OP Amp for Pre-out.
Q606, 607
AUDIO 10.5V AVR
When Q606’ base goes Hi, AVR outputs 10.5V.
Q608~613
Pre-out mute SW
When a base gose Hi, Pre-out is set to mute.
●
CD PLAYER UNIT (X32-5730-00)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
µ
-com for mechanism control
IC2
LSI for CD signal procRF AMP
IC4
BTL driver
SP, SL (including LO/EJ) motor and PU actuator
IC5
SW3.3V regulator
3.3V power supply for IC2, PU, and IC18 digital section
IC13
Audio active filter
Secondary LPF
IC14
A5V regulator
5V power supply for DAC
IC15
Compacted audio decoding DSP
AC drive decoder, MP3/WMA/AAC decoder
IC16
Compacted audio expanding SDRAM
IC17
Decoder software, unique ID storage flash ROM
IC18
Audio external 24-bit D-A converter
IC19
BU3.3V regulator
3.3V power supply for
µ
-com
IC20
1.8V regulator
1.8V power supply for core section of IC15
IC21
Decoder/SDRAM/Flash ROM 3.3V regulator
3.3V power supply for port section of IC15, IC16 and IC17
Q1,4
Level shift (3.3V-5V) FET
Q3,5,6
Level shift (3.3V-5V) transistor with 2 elements
Q7
Level shift (3.3V-5V) transistor
Q8
APC (Auto Power Control) transistor
Q9,10
Transistor for preceding beam delaying SW during
non-search
Q11
A5V power supply constant circuit FET
Q12,13
SW8V SW transistor
Q14,15
SDRAM 3.3V power supply SW transistor
SDRAM power supply is turned off when /CSRST is “L”.
D2
UPD63712GC built-in resetting terminal static
protection diode
D3
Protection diode for pick-up laser diode
D4,D5
Diode for securing audio L-R reference voltage
D6
Diode for control terminal’s “L” confirmation for
IC20 and IC21
COMPONENTS DESCRIPTION