Panasonic SA-AK770PL User Manual

■ AMPLIFIER SECTION
RMS output power
Front Ch (both channels driven)
250 W per channel (6 Ω), 1 kHz, 10% THD
Subwoofer Ch
200 W per channel (6 Ω), 100 Hz, 10% THD
Total RMS stereo mode power 700 W
PMPO 7700 W
■ FM/AM TUNER, TERMINALS SECTION
Preset station FM 30 stations
AM 15 stations
Frequency Modulation (FM)
Frequency range
87.9 to 107.9 MHz (200 kHz steps) (PL only)
87.5 to 108.00 MHz (100 kHz steps) (PL only)
87.50to108.00MHz(50kHzsteps)(GCPonly)
Antenna terminal(s) 75 Ω (unbalanced)
Amplitude Modulation (AM)
Frequency range
520 to 1710kHz (10 kHz steps) (PL only)
522 to 1629 kHz (9 kHz step) (GCP only)
522to1630kHz(10kHzsteps)(GCPonly)
Music Port (front) jack
© 2008 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-AK770PL
SA-AK770GCP
Colour
(K)... Black Type
Sensitivity 100 mV, 4.0 k Ω
Terminal Stereo, 3.5 mm jack
Headphone jack
Terminal Stereo, 3.5 mm jack
Output level (CD, 1 kHz, -20 dB) 32 Ω (Max)
Mic jack
Sensitivity 0.7 mV, 1.2 k Ω
Terminal Mono, 3.5 mm jack (1 system)
■ CASSETTE DECK SECTION
Type 1way
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
Erase system AC erase 100 kHz
Tape speed 4.8 cm/s
Overall frequency response (+3, -6 dB) at DECK OUT
NORMAL 35 Hz to 10 kHz
S/N ratio 50 dB (A weighted)
Wow and flutter 0.18 % (WRMS)
Fast forward and rewind time
CD Stereo System
Notes: This model’s CD mechanism changer unit is CR14C. Please refer to the original Service Manual
(Order No. MD0805031CE) for this mechanism.
Specifications
ORDER NO. MD0805007CE

Panasonic SA-AK770PL Specifications

General

Brand	Panasonic
Model	SA-AK770PL
Category	Stereo System
Language	English

Summary

Specifications

AMPLIFIER SECTION

Details of audio amplifier output power.

FM/AM TUNER, TERMINALS SECTION

Radio tuner and connection specifications.

CASSETTE DECK SECTION

Technical details of the cassette deck.

Safety Precautions

General Guidelines

Essential safety advice for servicing and handling.

Leakage Current Cold Check

Procedure to check leakage current when unplugged.

Leakage Current Hot Check

Procedure to check leakage current when powered on.

Before repair and adjustment

Precautions before repair and adjustment work.

Protection Circuitry

Information on the unit's protection circuit.

Safety Part Information

Identifies critical safety components.

Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices

Handling Precautions for Traverse Unit

Cautions to Be Taken in Handling the Optical Pickup Unit

Precautions for handling the optical pickup to prevent ESD damage.

Grounding for electrostatic breakdown prevention

Methods for grounding to prevent static discharge damage.

Precaution of Laser Diode

Operation Procedures

Main Unit Key Buttons Operations

Overview of main unit control buttons and functions.

Remote Control Key Buttons Operations

Explanation of remote control functions.

Self diagnosis and special mode setting

Service Mode Summary Table

Table summarizing service modes and activation methods.

Service Mode Table

Detailed tables for service modes and operations.

Error code Table Display

Explains error codes and meanings for troubleshooting.

Assembling and Disassembling

Caution

General cautionary notes before disassembly/assembly.

Disassembly flow chart

Visual guide to the sequence of disassembly steps.

Main Components and P.C.B. Location

Identifies the location of major components and PCBs.

Replacement of Audio Digital Amp IC (IC5400)

Guide for replacing audio digital amp IC.

Replacement of Audio Digital Amp IC (IC5000)

Guide for replacing audio digital amp IC.

Replacement of Audio Digital Amp IC (IC5200)

Guide for replacing audio digital amp IC.

Replacement of Voltage Regulator IC (IC2761)

Guide for replacing voltage regulator IC.

Replacement of Switch Transistor (Q2751)

Guide for replacing switch transistor.

Replacement of Switch Regulator IC (IC5701)

Guide for replacing switch regulator IC.

Replacement of Switch Regulator Diode (D5702)

Guide for replacing switch regulator diode.

Replacement of Regulator Diode (D5801)

Guide for replacing regulator diode.

Replacement of Regulator Diode (D5802)

Guide for replacing regulator diode.

Replacement of Regulator Diode (D5803)

Guide for replacing regulator diode.

Service Positions

Checking and Repairing of Main P.C.B.

Procedures for checking and repairing the main PCB.

Checking and Repairing Panel, Deck P.C.B., Tact Switch P.C.B., Music Port P.C.B. & USB Connector/Led P.C.B.

Guide for checking and repairing multiple PCBs.

Checking and Repairing Jupiter USB P.C.B. (Side A & B)

Checking and Repairing Mic P.C.B.

Checking and Repairing of D-Amp P.C.B.

Checking and Repairing of AC Inlet P.C.B. & SMPS P.C.B.

Procedure for Checking Operation of Individual Parts of Deck Mechanism Unit

Operation Check with Cassette Tape

Operation Check without Cassette Tape

Measurement And Adjustments

Cassette Deck Section

Requirements and procedures for measuring and adjusting the cassette deck.

Tape Speed Adjustment

Bias Voltage Check

Bias Frequency Check

Voltage Measurement and Waveform Chart

Voltage Measurement

Provides voltage reference values for various circuit boards.

Waveform Chart

Visual representations of signal waveforms for troubleshooting.

Block Diagram

CD Servo Diagram

Main & USB Connector/Led Diagram

Side Bar Led, Panel, Remote Sensor, Music Port, Headphone, Tact Switch & Microphone Diagram

Jupiter USB Diagram

D-Amp Diagram

SMPS, AC Inlet & Voltage Selector Diagram

Deck & Deck Mechanism Diagram

Schematic Diagram

(A) CD Servo Circuit

Detailed schematic of the CD servo control circuit.

(B) Main Circuit

Schematic of the primary control and processing circuits.

(C) Panel Circuit

(D) Side Bar (L) Led Circuit, (E) Side Bar (R) Led Circuit & (K) USB Connector/Led Circuit

(F) Tact Switch Circuit, (G) Music Port Circuit & (H) Remote Sensor Circuit

(I) Deck Circuit

Detailed schematic of the cassette deck operation.

(J) Deck Mechanism Circuit, (O) AC Inlet Circuit, (P) Voltage Selector Circuit (GCP Only) & (Q) Mic Circuit

(L) Jupiter USB Circuit

Detailed schematic of the Jupiter USB interface.

(M) D-Amp Circuit

Schematic of the digital amplifier circuitry.

(N) SMPS Circuit

Schematic of the Switched Mode Power Supply.

Printed Circuit Board

(A) CD Servo P.C.B. & (L) Jupiter USB P.C.B.

(B) Main P.C.B., (G) Music Port P.C.B. & (K) USB Connector/Led P.C.B.

(C) Panel P.C.B., (F) Tact Switch P.C.B. & (H) Remote Sensor P.C.B.

(I) Deck P.C.B., (J) Deck Mechanism P.C.B. & (O) AC Inlet P.C.B.

(M) D-Amp P.C.B.

(N) SMPS P.C.B.

(D) Side Bar (L) Led P.C.B., (E) Side Bar (R) Led P.C.B., (P) Voltage Selector P.C.B. (GCP Only) & (Q) Mic P.C.B.

Terminal Function of Integrated Circuits

IC2801 (RFKWAK570PLK)

IC6601 (C0HBB0000057) FL DISPLAY

Replacement Parts List