4
KDC- MP5036U/MP535U/W6537U/
W6537UY/X591
Ref. No.
Application / Function
Operation / Condition / Compatibility
Q200
DSI
When the base goes Hi, security indicator lights.
Q300,302
4VPRE+B Protect
When 4VPRE+B is overcurrent, Q300 and Q302 turn Q301 off.
Q301
4VPRE+B AVR
When Q300’s base is 8V, 4VPRE+B outputs 7.4V.
Q500,501
AM+B
When Q501’s base goes Hi, AM+B is output.
Q601,606
Pre-out Mute Driver
When the base goes Lo, mute driver is turned on.
Q600,602~605,
Q607
Pre-out Mute SW
When the base goes Hi, pre-out is muted.
Q704,706
M-RST Converter
Convert 3.3V to 5V.
●
SWITCH UNIT (X16-399x-xx)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC2
Remote Control IC
Receives remote control signal.
Q10
GREEN SW
When the base goes Hi, GREEN key illuminations are lit.
Q12~14
Grid Driver
When each transistor’s base goes Lo, Grid is ON.
Q15
RED (BLUE) SW
Except KDC-X591:
When the base goes Hi, RED key illuminations are lit.
Only KDC-X591:
When the base goes Hi, BLUE key illuminations and sub illuminations are lit.
Q19
DBO SW
When the base goes Hi, GREEN DBO is lit.
Q20
VFD Restart
Key scan starts at the base goes Hi when the product’s power is ON.
●
CD PLAYER UNIT (X32-5980-02)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
CD Signal Processor & MECHA
µ-COM RF Amplifi er responding to
CD-RW
Focusing, tracking, sled and spindle servo processing.Automatic adjustment (focusing,
tracking, gain, offset and balance) operations. Digital signal processing (DSP, PLL,
sub-codes, CIRC error correction, audio data interpolation processing) operations,
and microcomputer function. Generation of RF signal based on the signals from the
APC circuit and the laser pick-up, and generation of servo error (focusing error and
tracking error) signals. Detection of dropout, anti-shock, track crossing and off-tracking
conditions, included gain control function during CD-RW.
IC2
3.3V REG
Supplies 3.3V to IC1 and the laser pick-up.
IC6
4ch BTL Driver
Focusing and tracking coil, sled and spindle motor driver, disc loading and eject operation.
Q3
5V-3.3V Level Shift
Shifts 5V to 3.3V, or 3.3V to 5V.
Q6
BU3.3V SW
Q6 is ON when Q8 or Q9 is ON.
Q7
APC (Auto Power Control)
Drives LD (Laser Diode).
Q8
Power Supply Control
Power Supply Control from MECHA µ-COM. Q6 is ON when pin 63 (P ON1) of IC1 is Hi.
Q9
Power Supply Control
Power Supply Control from system µ-COM. Q6 is ON when pin 125 (MSTOP) of IC1 is Hi.
D1,2
5V Force Voltage Prevention
5V Force Voltage Prevention from MECHA µ-COM side.
D3
Laser Diode Protection
Prevents reverse bias which is applied to laser. Laser destruction prevention.
COMPONENTS DESCRIPTION
