Panasonic SB-AK220 User Manual

n AMPLIFIER SECTION
RMS Power output
THD 10%, both channels driven
1 kHz 80 W per channel (6 Ω)
Total Bi-Amp power 160 W per channel
Input sensitivity
A
UX 250 mV
Input Impedance
A
UX 13.3 kΩ
n FM TUNER SECTION
Frequency range
87.50 - 108.00 MHz (50 kHz steps)
Sensitivity 2.5µV (IHF)
S/N 26 dB 2.2 µV
A
ntenna terminal(s) 75 Ω (unbalanced)
n AM TUNER SECTION
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
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
© 2004 Panasonic AVC Networks Singapore Pte.
Ltd. All rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-AK220GCP
Colour
(S)... Silver Type
Erasing system AC erase 100 kHz
Tape speed 4.8 cm/s
Overall frequency response (+3 dB, -6 dB at DECK OUT)
NORMAL (TYPE I) 35 Hz - 14 kHz
S/N 50 dB (A weighted)
Wow and flutter 0.18 % (WRMS)
Fast forward and rewind time Approx. 120 seconds with
C-60 cassette tape
n CD SECTION
Sampling frequency 44.1 kHz
Decoding 16 bit linear
Beam source/wavelength Semiconductor laser/780 nm
Number of channels Stereo
Frequency response 20 Hz - 20 kHz (+1, -2 dB)
Wow and flutter Below measurable limit
Digital filter 8fs
D/A converter MASH (1 bit DAC)
MP3
Bit rate 32 kbps - 320 kbps
Sampling frequency 32 kHz, 44.1 kHz, 48 kHz
n GENERAL
Power Supply AC 110/ 127/ 220-230/ 240 V,
50/ 60 Hz
Power consumption 179 W
Power consumption in standby
mode
0.85 W
Dimensions (W x H x D) 250 x 330 x 363 mm
CD Stereo System
Specifications
ORDER NO. MD0403067C3

Panasonic SB-AK220 Specifications

General

CD Player	Yes
Bluetooth	No
USB Playback	No
Number of Channels	2
Tuner	FM
Playback Formats	CD, CD-R
Tuner Bands	FM
Audio Output Power	20W per channel

Summary

Safety and Handling Precautions

Initial Setup and Repair Guidelines

Covers initial setup, voltage selection, repair, and adjustment precautions for safe operation.

ESD Prevention and Grounding

Details methods to prevent component damage from static electricity and proper grounding techniques.

Disassembly and Assembly of Main Component

Disassembly Overview and Cabinet/CD Unit

Internal Component Removal

Service Position and Checking Procedures

Checking Main, Power, Transformer, and Voltage Selector PCBs

Checking Panel, Tact Switch, Deck, and Deck Mechanism PCBs

Error Code Description and Troubleshooting

Deck Mechanism Error Codes

Lists abnormal items, error displays, and detection methods for the deck mechanism.

CD/Changer Block Error Codes

Details error codes related to the CD/Changer block, including switch and transmission errors.

Power Supply Error Detection

Explains error detection related to the power supply, specifically the power amplifier output.

Self-Diagnostic Function

Self-Diagnostic Display and Entry

Explains how the unit displays errors and how to access the self-diagnostic mode.

Cassette Mechanism Test Procedure

Provides a detailed test procedure for the cassette mechanism to identify specific error codes.

CD Mechanism Test and Error Clearing

Details the CD mechanism test, error clearing, exiting diagnostic mode, and power amplifier failure indication.

CD Test Mode Function

Setting Up CD Test Mode

Automatic Adjustment Results

Measurements and Adjustments

Cassette Deck Measurements and Adjustments

Details measurement conditions and procedures for tape speed, bias, erase voltage, and frequency adjustments.

Tuner Section Alignment

AM RF Adjustment and Alignment Points

Schematic Diagrams

CD Circuits Schematics

Tuner, Main, and Control Circuits

Power, Deck, and Transformer Circuits

Printed Circuit Board Layouts

CD Servo and Main PCB Layouts

Control and Power PCB Layouts

Wiring Connection Diagram

Overall Wiring Connections

IC Terminal Functions

IC701 Servo Amplifier Pinout

IC702 Servo Processor Pinout

IC703 Motor Driver and IC305 Microprocessor Pinouts

Details pin functions for IC703 (motor driver) and IC305 (microprocessor).

Troubleshooting Guide

Troubleshooting Flowchart

Provides a flowchart to diagnose failures, starting with CD playback and progressing through component checks.

Parts Location and Replacement Parts List

General Notes and Deck Mechanism Parts

Explains parts list notes and provides location/list for deck mechanism components.

CD Loading Mechanism and Cabinet Parts

Provides location and list for CD loading mechanism parts and cabinet components.

Electrical, Packing, and Packaging Details