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Kenwood KDC-MP738U - User Manual

Kenwood KDC-MP738U
54 pages
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This product uses Lead Free solder.
This product complies with the
RoHS directive for the European market.
© 2008-3 PRINTED IN JA PAN
B53-0628-00
(
N
)
429
SERVICE MANUAL
KDC-MP738U/W7541U
/W7541UY/X792/X8009U
CD RECEIVER
KDC-X792
KDC-MP738U
KDC-X8009U
KDC-W7541U
KDC-X8009U
(M type)
KDC-W7541U
KDC-W7541UY
(E type)
KDC-X792
(K type)
SIZE AA BATTERY
(Not supplied)
Panel assy
(A64-4425-02)
MODEL TDF PANEL No. TDF NAME
KDC-X792 Y33-2940-60 TDF-88DX
KDC-MP738U Y33-2940-61 TDF-MP88D
KDC-W7541U/W7541UY Y33-2940-64 TDF-W7541U
KDC-X8009U Y33-2940-66 TDF-X8009U
CD MECHANISM EXTENSIONCORD (30P) : E39-1014-05
DC cord (K,M type)
(E30-6428-05)
DC cord (E type)
(E30-6671-05)
Escutcheon
(B07-3238-03): KDC-MP738U
(B07-3235-03): K,E,M type
Mounting hardware assy
(J22-0011-03)
Remote controller assy
(A70-2085-05)
Lever
(D10-7012-04) x2
Carrying case
(W01-1664-05): KDC-X792
(W01-1710-05): K,E type
Compact disc
(W01-1723-05)
Screw set (K,M type)
(N99-1757-15)
Screw set (K,M type)
(N99-1730-35)
Panel assy
(A64-4428-02)
RC-547
Panel assy
(A64-4424-02)
Plastic cabinet assy (M type)
(A02-2757-03)
TDF SPARE-PANEL
Cover (KDC-X792)
(F19-1475-04)
Screw set (KDC-X792)
(N99-1790-05)
KDC-MP738U
(K type)
Panel assy
(A64-4431-02)
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Summary

SERVICE MANUAL - Model Identification and Components

TDF SPARE-PANEL and CD Mechanism Extension Cord

Lists models, panel numbers, and identifies the CD mechanism extension cord.

BLOCK DIAGRAM - System Overview

System Microcomputer and Sub-Panel Connections

Illustrates system microcomputer and sub-panel interconnections.

Power and Signal Distribution

Depicts power supply, signal distribution, and key IC functions.

BLOCK DIAGRAM - CD PLAYER UNIT

DPU1 and Motherboard Interface

Shows DPU1 structure and interface with the motherboard.

Motor and Signal Control

Depicts motor drivers, signal processing, and optical pickup interface.

COMPONENT DESCRIPTIONS - ELECTRIC UNIT

IC Component Functions

Explains the function and operation of various IC components.

Transistor Functions and Operations

Lists transistor applications, functions, and operating conditions.

COMPONENT DESCRIPTIONS - SWITCH & CD PLAYER UNITS

Switch Unit Component Details

Details functions of ICs, regulators, and drivers in the switch unit.

CD Player Unit Component Details

Explains drivers, DSP, regulators, and protection circuits in the CD player.

TERMINAL DESCRIPTIONS - SYSTEM MICROCOMPUTER

IC500 Pin Functionality

Describes pin names, I/O, application, and operational logic for IC500.

System µ-com Communication

Details pins for system µ-com and panel communication requests.

TERMINAL DESCRIPTIONS - MICROCOMPUTER (Continued)

IC500 Pin Functions (Continued)

Explains pin functions for power supply, display, and control.

Interface and Control Pins

Describes pins for power control, external display, and mute functions.

TERMINAL DESCRIPTIONS - MICROCOMPUTER (Continued)

Audio and Mute Control Pins

Describes pins for audio mute control and line mute detection.

Communication and Status Pins

Explains pins for communication requests and status monitoring.

TERMINAL DESCRIPTIONS - MICROCOMPUTER & DESTINATION SETTING

IC500 Pin Functions (Final)

Details remaining pin functions and destination setting parameters.

Destination Setting Configuration

Details the configuration for unit destination setting using jumpers.

MICROCOMPUTER FUNCTIONS - CD & TUNER

CD Motor and Eject Control

Details operational states for CD motor and eject control.

Tuner Frequency and Selection

Covers AFS process, clock generation, and tuner selection logic.

TERMINAL DESCRIPTIONS - SUB MICROCOMPUTER

IC700 Pin Functions

Explains pin names, I/O, application, and operational logic for IC700.

Control and Power Pins

Details pins for reset, power control, and chip enable functions.

TERMINAL DESCRIPTIONS - SUB MICROCOMPUTER (Continued)

IC700 Pin Functions (Continued)

Explains pin functions for USB, CD interface, and FLASH writing.

Data and Communication Pins

Describes pins for serial interface, I2C, and IPOD authentication.

TERMINAL DESCRIPTIONS - PANEL MICROCOMPUTER

IC4 Pin Functions

Explains pin names, I/O, application, and operational logic for IC4.

Display and Control Pins

Details pins for display, PWM output, and panel communication.

TERMINAL DESCRIPTIONS - PANEL MICROCOMPUTER (Continued)

IC4 Pin Functions (Continued)

Explains pin functions for clock input, mode selection, and voltage references.

Input and Output Pins

Describes pins for rotary input, memory write permission, and data transmission.

TERMINAL DESCRIPTIONS - PANEL MICROCOMPUTER (Final)

IC4 Pin Functions (Final)

Details final pin functions for memory operations and address output.

Memory and Address Pins

Explains pins for memory operation permission and address output.

TEST MODE - Operations

Entering and Clearing Test Mode

Details procedures for entering, clearing, and default conditions of test mode.

Tuner Adjustment Mode

Guides through tuner band selection and adjustment items like Soft Mute.

TEST MODE - Functions

Tuner Seek Stop Level and RDS Measurement

Covers manual seek stop level adjustment and RDS/RBDS measurement.

CD and Audio Adjustment Modes

Details CD source test modes and audio adjustment items like Fader and Balance.

TEST MODE - System Adjustments

System Controls and Displays

Details Dual Zone, OPEL communication, and G-Analyzer display functions.

ROM Data Transfer Procedure

Outlines the process for transferring E2PROM data via ROM Read/Write modes.

TEST MODE - Special Displays

Test Mode Key Functions

Explains key presses for ROM version, AUD_INIT, and iPod status displays.

Version and Information Displays

Covers accessing version, service information, and CD information modes.

TEST MODE - Data Display and Initialization

Version and CD Information Display

Explains displaying version, service, and CD information via key presses.

System Initialization and Flash ROM Check

Covers initializing audio settings and performing Flash ROM checks.

TEST MODE - Operational Notes

Panel Combination and Other Modes

Details panel combination checks, LED color switching, and mute duration changes.

Test Mode Operational Restrictions

Outlines restrictions like security code writing and DC offset error logging.

TEST MODE - Data Clearing and Security

E2 PROM Data Clearing Procedures

Details clearing backup, CD mechanism, service, and DC offset error data.

DC Offset Error Display and Security

Explains DC offset error display, clearing, and forced POWER ON mode entry.

TEST MODE - Security and DC Offset Error

Programmable Security Code Management

Details the procedure for clearing programmable security codes.

DC Offset Error Handling

Covers DC offset error purpose, detection processing, and µ-com terminal control.

DC OFFSET ERROR Management

DC Offset Error Cancellation and Notes

Details cancellation conditions, test mode notes, and other functions.

DC Offset Error Detection Timing

Shows timing diagrams for improper connection and capacitor leak detection.

PC BOARD LAYOUTS - SWITCH UNIT

Switch Unit Component Layout

Illustrates component placement and reference designators on the switch unit board.

Component Identification on PC Board

Maps component reference numbers to their locations on the PC board.

PC BOARD LAYOUTS - ELECTRIC UNIT

Electric Unit Component Layout

Illustrates component placement and reference designators on the electric unit board.

Component Placement Details

Details placement of ICs, transistors, and connectors on the electric unit board.

PC BOARD LAYOUTS - DISPLAY UNIT

Display Unit Component Layout

Illustrates component placement and reference designators on the display unit board.

Component Reference Mapping

Maps component reference numbers to board locations for the display unit.

PC BOARD LAYOUTS (FOIL SIDE) - ELECTRIC UNIT

Electric Unit Foil Side Layout

Illustrates component placement on the electric unit board's foil side.

Foil Side Component Details

Shows placement of transistors, ICs, and resistors on the foil side.

PC BOARD LAYOUTS (FOIL SIDE) - ELECTRIC UNIT (Continued)

Electric Unit Foil Side Layout (Continued)

Illustrates component placement and reference designators on the foil side.

Foil Side Component Mapping

Maps component reference numbers to foil side board locations.

PC BOARD LAYOUTS (COMPONENT SIDE) - CD PLAYER UNIT

CD Player Unit Component Layout

Illustrates component placement and reference designators on the CD player board.

Component Identification

Maps component reference numbers to board locations for the CD player unit.

PC BOARD LAYOUTS (FOIL SIDE) - CD PLAYER UNIT

CD Player Unit Foil Side Layout

Illustrates component placement on the CD player unit board's foil side.

Foil Side Component Mapping

Maps component reference numbers to foil side board locations for the CD player.

SCHEMATIC DIAGRAM - ELECTRIC UNIT (1;5)

Electric Unit Schematic (Section 1;5)

Illustrates initial circuit connections for the electric unit, including pre-out and audio sections.

Antenna and Tuner Circuitry

Depicts antenna input, tuner circuitry, and related components.

SCHEMATIC DIAGRAM - ELECTRIC UNIT (2;5)

Electric Unit Schematic (Section 2;5)

Shows further electric unit circuit connections, including power supplies and microcomputers.

System µ-com and Power Control

Illustrates system µ-com connections and power control circuitry.

SCHEMATIC DIAGRAM - ELECTRIC UNIT (3;5)

Electric Unit Schematic (Section 3;5)

Shows electric unit circuits, including level shift and driver stages.

Audio Amplifier and Control Circuits

Depicts audio amplifier stages and control signal routing.

SCHEMATIC DIAGRAM - ELECTRIC UNIT (4;5)

Electric Unit Schematic (Section 4;5)

Shows electric unit circuits, including USB interface and power supply controls.

USB and Power Supply Circuits

Illustrates USB interface connections and power supply control logic.

SCHEMATIC DIAGRAM - ELECTRIC UNIT (5;5)

Electric Unit Schematic (Section 5;5)

Shows final electric unit circuits, including sub-microcomputer and USB connections.

Safety Critical Components

Identifies safety critical components and provides repair precautions.

SCHEMATIC DIAGRAM - SWITCH UNIT (1;2)

Switch Unit Schematic (Section 1;2)

Illustrates initial circuit connections for the switch unit, including microcontrollers and LEDs.

Flash ROM and Panel Interface

Depicts Flash ROM connections and panel interface circuitry.

SCHEMATIC DIAGRAM - SWITCH UNIT (2;2)

Switch Unit Schematic (Section 2;2)

Shows final switch unit circuit connections, including regulators and drivers.

Regulator and Driver Circuits

Illustrates regulator circuits and driver components for the switch unit.

SCHEMATIC DIAGRAM - CD PLAYER UNIT (1;2)

CD Player Unit Schematic (Section 1;2)

Illustrates initial circuit connections for the CD player unit, including drivers and regulators.

Motor and Power Control Circuits

Depicts motor control circuits, power supply regulators, and interface signals.

SCHEMATIC DIAGRAM - CD PLAYER UNIT (2;2)

CD Player Unit Schematic (Section 2;2)

Shows final CD player unit circuit connections, including DSP and optical pickup.

DSP and Optical Pickup Circuits

Illustrates DSP functions and optical pickup interface connections.

EXPLODED VIEW - CD MECHANISM

CD Mechanism Assembly Breakdown

Illustrates the assembly of the CD mechanism with numbered parts and screw types.

Screw and Part Identification

Details screw types (A-K) and their part numbers for assembly.

EXPLODED VIEW - UNIT

Main Unit Assembly Breakdown

Illustrates the assembly of the main unit with numbered parts and screw types.

Unit Part Identification

Details unit parts and their corresponding part numbers for assembly.

PARTS LIST - Overview

Parts for KDC Models

Provides a list of parts and their corresponding part numbers for the KDC models.

Parts for Switch and Display Units

Details parts for the Switch Unit and Display Unit, including LEDs and connectors.

PARTS LIST - SWITCH & CD PLAYER UNITS

Switch Unit Components

Details capacitors, resistors, ICs, and transistors for the Switch Unit.

CD Player Unit Components

Lists capacitors, resistors, ICs, and transistors for the CD Player Unit.

PARTS LIST - CD PLAYER & ELECTRIC UNITS

CD Player Unit Components (Continued)

Lists remaining capacitors, resistors, ICs, and transistors for the CD Player Unit.

Electric Unit Components

Details capacitors, resistors, ICs, and transistors for the Electric Unit.

PARTS LIST - ELECTRIC UNIT

Electric Unit Components (Continued)

Lists further capacitors, resistors, ICs, and transistors for the Electric Unit.

Connectors and Other Parts

Details connectors, switches, and choke coils for the Electric Unit.

PARTS LIST - ELECTRIC UNIT (Continued)

Electric Unit Components (Continued)

Lists more resistors and ICs for the Electric Unit.

Resistors and ICs for Electric Unit

Lists various resistors and ICs with their part numbers and specifications.

PARTS LIST - ELECTRIC UNIT (Continued)

Electric Unit Components (Continued)

Lists more resistors and ICs for the Electric Unit.

Resistors and ICs for Electric Unit (Continued)

Lists more resistors and ICs with their part numbers and specifications.

PARTS LIST - ELECTRIC UNIT (Continued)

Electric Unit Components (Continued)

Lists transistors, ICs, and diodes for the Electric Unit.

Diodes and Transistors for Electric Unit

Lists diodes, transistors, and ICs with their part numbers and specifications.

PARTS LIST - ELECTRIC UNIT & CD MECHANISM

Electric Unit Components (Final)

Lists final components for the Electric Unit, including transistors and resistors.

CD Mechanism Assembly Parts

Details parts for the CD Mechanism Assembly, including motors and optical pickup.

PARTS LIST - Component Coding

Capacitor Value and Coding

Details capacitor value coding, temperature coefficients, and tolerances.

Resistor Value and Coding

Explains resistor value coding, wattage, and dimensions.

SPECIFICATIONS - KDC-MP738 U;X792

Tuner and CD Player Specifications

Lists frequency ranges, sensitivities, responses, and distortion for tuners and CD player.

Audio, USB, and General Specifications

Details audio power, USB standard, input impedance, and unit dimensions.

SPECIFICATIONS - KDC-W7541 U;W7541 UY

Tuner and CD Player Specifications

Lists tuner ranges, sensitivities, CD player performance, and specifications.

Audio, USB, and General Specifications

Details audio power, USB standard, input impedance, and unit dimensions.

SPECIFICATIONS - KDC-X80090

Tuner and CD Player Specifications

Lists frequency ranges, sensitivities, responses, and distortion for tuners and CD player.

Audio, USB, and General Specifications

Details audio power, USB standard, input impedance, and unit dimensions.

Kenwood KDC-MP738U Specifications

General IconGeneral
CD PlaybackYes
MP3 PlaybackYes
USB InputYes
BluetoothNo
Display TypeLCD
Playback FormatsCD, MP3, WMA
Auxiliary InputYes
Detachable FaceplateYes
Channels4
WMA PlaybackYes
Remote ControlOptional
Power Output50 W
RMS Power Output22W x 4
TunerAM/FM
Equalizer13-band
Number of Presets24

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