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Panasonic SA-AK631GCP User Manual

Panasonic SA-AK631GCP
112 pages
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n AMPLIFIER SECTION
RMS output power
THD 10%, both channels driven
1 kHz
(Low channel) 75 W per channel (5 )
10 kHz
(High channel) 70 W per channel (5 )
80 Hz
(Subwoofer channel) 160 W (8 )
Total power output 450 W
n FM/AM TUNER, TERMINALS SECTION
Preset station FM 15 stations
AM 15 stations
Frequency Modulation (FM)
Frequency range
87.50 - 108.00 MHz (50 kHz steps)
Sensitivity 2.5 µV (IHF)
S/N 26 dB 2.2 µV
A
ntenna terminal(s) 75 (unbalanced)
A
mplitude Modulation (AM)
Frequency range 522 - 1629 kHz (9 kHz steps)
520 - 1630 kHz (10 kHz steps)
Sensitivity
S/N 20 dB (at 999 kHz) 560 µV/m
A
udio performance (Amplifier)
Input sensitivity/Input impedance
A
ux 250 mV,14.7 k
Phone jack
© 2005 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-AK631GCP
Colour
(S)... Silver Type
Terminal Stereo, 3.5 mm jack
n CASSETTE DECK SECTION
Track system 4 track, 2 channel
Heads
Record/playback Solid permalloy head
Erasure Double gap ferrite head
Motor DC servo motor
Recording system AC bias 100 kHz
Erasing system AC erase 100 kHz
Tape speed 4.8 cm/s
Overall frequency response (+3 dB, -6 dB at DECK OUT)
NORMAL 35 Hz - 14 kHz
S/N ratio 50 dB (A weighted)
Wow and flutter 0.18 % (WRMS)
Fast forward and rewind time Approx. 120 seconds with
C-60 cassette tape
n DISC SECTION
Discs played [8 cm or 12 cm]
(1) CD-Audio (CD-DA)
(2) CD-R/RW (CD-DA, MP3 formatted disc)
(3) MP3
Bit rate
MP3 32 kbps - 320 kbps
Sampling frequency
MP3 32 kHz, 44.1 kHz, 48 kHz
CD 44.1 kHz
Decoding 16 bit linear
CD Stereo System
Specifications
ORDER NO. MD0503065C3

Table of Contents

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Panasonic SA-AK631GCP Specifications

General IconGeneral
BluetoothNo
CD PlayerYes
FM RadioYes
USB PlaybackNo
TypeStereo System
Number of Channels2
Tuner BandsFM
USB PortNo
RadioYes
Speaker Configuration2.0
Playable MediaCD
Speaker Type2-way

Summary

Specifications

Amplifier Section

Details of amplifier output power, THD, and frequency response for different channels.

FM/AM Tuner, Terminals Section

FM/AM preset stations, frequency ranges, sensitivity, and antenna terminal details.

Cassette Deck Section

Cassette deck track system, heads, motor, recording system, tape speed, frequency response, S/N, and F/F time.

Disc Section

Types of discs played (CD-Audio, CD-R/RW, MP3), bit rates, sampling frequencies, and decoding.

General Technical Specifications

General technical details including dimensions, mass, operating conditions, and basic component specs.

System Components

Lists the main system components, including the music center and associated speakers.

Safety and Handling Precautions

Before Use and Repair Safety

Instructions for safe setup, voltage selection, capacitor discharge, and gradual power restoration.

Component Handling Precautions

Techniques to prevent static discharge damage and guidelines for handling lead-free solder.

Traverse Deck and Laser Diode Precautions

Precautions for handling the traverse deck and laser diode to prevent damage from static electricity.

Included Accessories

Lists and illustrates the included accessories such as remote control, antennas, AC cord, and plug adapter.

Operation and Diagnostics

System Operation Procedures

Explains how to operate the main unit and its remote control, detailing button functions and modes.

Self-Diagnostic Function

Information on the self-diagnostic display, how to enter it, perform tests, clear errors, and interpret codes.

CD Test Mode Functions

How to set CD test mode, view auto-adjustment results, and enter CD aging test mode for reliability.

Measurements and Adjustments

Procedures for cassette deck and tuner measurements, adjustments, and alignment points.

Troubleshooting Guide

A flowchart to diagnose and troubleshoot common problems, guiding through checks for CD playback and mechanism failures.

Maintenance and Repair Procedures

Disassembly Flow Chart

A flowchart illustrating the sequence for disassembling the main unit's casing and internal parts.

Servicing Gear Information

Details on a specific gear used as a jig for servicing operations like disc tray and traverse unit movement.

Top Cabinet Disassembly

Step-by-step instructions for removing the top cabinet of the main unit by unscrewing and lifting.

CD Lid Disassembly

Procedure for removing the CD lid, including steps for opening the disc tray automatically.

Rear Panel Disassembly

Instructions for removing the rear panel by unscrewing and disconnecting wires.

CD Mechanism Unit Disassembly

Procedure for removing the CD mechanism unit, involving unscrewing and detaching FFC wires.

Main P.C.B. Disassembly

Steps to disassemble the main Printed Circuit Board, involving disconnecting FFC wires and connectors.

Sub-Power P.C.B. Disassembly

Procedure for disassembling the sub-power Printed Circuit Board, involving removing screws and connectors.

Power P.C.B. Disassembly

Steps for disassembling the power Printed Circuit Board, including removing screws and desoldering components.

Transformer P.C.B. & Voltage Selector Disassembly

Instructions for disassembling the transformer PCB and voltage selector, involving screws and breaking joints.

Front Panel Unit Disassembly

Steps to disassemble the front panel unit, including releasing claws and removing the volume knob.

Deck Mechanism Unit Disassembly

Procedure for disassembling the deck mechanism unit, involving detaching FFC wires and removing screws.

CD Mechanism Component Replacement

Steps for replacing the traverse deck unit within the CD mechanism, involving gears and disc tray operation.

CD Mechanism Component Installation

Procedure for installing the CD servo PCB after replacement, involving connecting FFC and soldering.

Traverse Deck Assembly Installation

Steps for installing the traverse deck assembly, aligning gears and bosses for proper function.

Disc Tray Replacement and Installation

Procedure for replacing the disc tray, involving removing screws, plates, and PCBS, then installing the tray.

Mechanism Base Drive Unit Procedures

Steps for disassembling and reassembling the mechanism base drive unit, including gears, springs, and PCBs.

Spindle Base Unit Procedures

Specific procedures for disassembling and reassembling the spindle base unit, involving disc spacers and support plates.

Loading Stopper and Base Drive Unit Installation

Procedures for installing the loading stopper and reassembling the mechanism base drive unit, focusing on gear installation.

Mechanism Operation Check

Checks to perform after servicing to ensure proper operation of tray base, spindle, and traverse assemblies.

Motor Assy Replacement

Procedure for replacing the motor assembly, including notices for installation and connecting components.

Pinch Roller and Head Block Replacement

Procedure for replacing the pinch roller assembly and head block, involving releasing claws and removing connectors.

Deck Motor, Belts, and Winding Replacement

Steps for replacing deck motor, capstan belts, and winding belt, including belt installation guidance.

Cassette Lid Assy Replacement

Procedure for replacing the cassette lid assembly, involving lifting a lever and pushing the assembly.

Tape Jam Problem Rectification

Steps to resolve tape jam issues, involving rotating the flywheel and opening the cassette lid to remove the tape.

Diagnostic and Troubleshooting Procedures

Checking Major Printed Circuit Boards (PCBs)

Procedures for checking main, transformer, panel, deck, and power PCBs, involving disassembly and connections.

Self-Diagnostic Function Overview

Information on the self-diagnostic display, how to enter it, perform tests, clear errors, and interpret codes.

Mechanism Tests (Cassette and CD)

Procedures to test cassette and CD mechanisms, identifying error codes through specific button presses and modes.

Error Code Management

Instructions on clearing error codes, exiting diagnostic mode, and handling power amplifier failure indications.

Error Code Descriptions

Detailed explanations of error codes detected for deck mechanism, CD/changer blocks, and power supply issues.

CD Test Mode Functions

How to set CD test mode, view auto-adjustment results, and enter CD aging test mode for reliability.

Micon ROM Checksum and Version Display

How to display the micon software version number and calculated ROM checksum for diagnostic purposes.

Troubleshooting Guide Flowchart

A flowchart to diagnose and troubleshoot common problems, guiding through checks for CD playback and mechanism failures.

Measurements, Adjustments, and Schematics

Cassette Deck Measurements and Adjustments

Procedures for tape speed, bias, and erase voltage adjustments, including measurement conditions and instruments.

Tuner Section Alignment

Procedure for AM-IF alignment in the tuner section, detailing instrument connection and signal application.

Alignment Points

Identifies alignment points for the cassette deck section and tuner section for precise calibration.

Block Diagram

A block diagram illustrating the main components and signal flow of the CD optical pickup and related drive circuits.

Voltage Measurements

A table detailing voltage measurements for ICs under different modes (REC, PLAY, STOP) for diagnostic purposes.

Schematic Diagrams Introduction

Introduction to schematic diagrams, notes on component sensitivity to static electricity, and safety precautions.

CD Servo Circuit Schematic

Schematic diagram for the CD servo circuit, showing connections for the optical pickup and servo processor IC.

Main (Tuner) Circuit Schematic

Schematic diagram for the main circuit including the tuner pack, showing connections to ICs like LA1833NMNTLM and LC72131MDTRM.

Main Circuit Schematic (Part 1)

Schematic diagram for the main circuit, detailing connections for deck controls, motors, and audio processing ICs.

Panel Circuit Schematic

Schematic diagram for the panel circuit, showing connections for buttons, sensors, volume controls, and the FL driver IC.

Transformer Circuit Schematic

Schematic diagram of the transformer circuit, illustrating power supply regulation, switching, and protection components.

CD Detect, Spindle Position, CD Loading & Sub-Power Circuits Schematics

Schematic diagrams for CD detect, spindle position, CD loading, and sub-power circuits, showing connections to motor drive and power ICs.

Power Circuit Schematic

Schematic diagram of the power circuit, detailing voltage regulators, headphone muting, and speaker output driver circuits.

Deck Circuit & Deck Mechanism Circuit Schematics

Schematic diagrams for the deck circuit and deck mechanism, showing P.B/REC AMP, ALC, and motor control components.

Printed Circuit Board Layouts

CD Servo P.C.B. Layout

Printed circuit board layout diagram for the CD servo PCB (REPX0443A), showing component placement.

Main P.C.B. Layout

Printed circuit board layout diagram for the main PCB (REPX0442P), showing component placement and connector locations.

Panel P.C.B. Layout

Printed circuit board layout diagram for the panel PCB (REPX0474E), showing button, sensor, and connector locations.

Transformer P.C.B. Layout

Printed circuit board layout diagram for the transformer PCB (REPX0468H), showing transformer and power components.

Multiple PCBs Layouts (CD Detect, Spindle, Loading, Tuner)

Layout diagrams for CD detect, spindle position, CD loading, and tuner pack PCBs, showing component placement.

Power & Sub-Power PCBs Layouts

Layout diagrams for power and sub-power PCBs (REPX0447D), showing component placement and connector locations.

Deck & Deck Mechanism PCBs Layouts

Layout diagrams for deck and deck mechanism PCBs (REPX0331D, REPX0321B), showing component and connector placement.

Wiring Connection Diagram

Overall System Wiring Diagram

A diagram illustrating the overall wiring connections between various PCBs, including main unit, power, tuner, and CD components.

Component Identification and Parts Lists

Component Illustrations and Pin Functions

Visual illustrations and detailed pin functions for ICs, transistors, and diodes used in the system.

Parts Location and Lists

Location diagrams and detailed lists for deck mechanism, CD loading mechanism, cabinet, electrical parts, packing materials, and accessories.

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