Kenwood KDC-MP5036U Service Manual page 4

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