Panasonic SB-VK91 - User Manual

n AMPLIFIER SECTION
RMS Output Power : Dolby Digital Mode
Front - High Ch
90 W per channel (6 Ω), 1 kHz, 10% THD
Front - Low Ch
45 W per channel (12 Ω), 100 Hz, 10% THD
Surround Ch
45 W per channel (6 Ω), 1 kHz, 10% THD
Center Ch
100 W per channel (6 Ω), 1 kHz, 10% THD
Subwoofer
95 W per channel (6 Ω), 100 Hz, 10% THD
Total RMS Dolby Digital mode power
650 W
PMPO output power 7300 W
n FM/AM TUNER, TERMINALS SECTION
Preset station FM 15 stations
AM/MW 15 stations
Frequency Modulation (FM)
Frequency range 87.50 - 108.00 MHz (50 kHz step)
Sensitivity 2.5µV (IHF)
S/N 26dB 2.2µV
A
ntenna terminals 75Ω (unbalanced)
A
mplitude Modulation (AM/MW)
Frequency range 522 - 1629 kHz (9 kHz step)
520 - 1630 kHz (10 kHz step)
A
M sensitivity S/N 20 dB at 1000 kHz
560µV/m
© 2004 Panasonic AVC Networks Singapore Pte.
Ltd. (RCB Registration Number: 197701580H) All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SA-VK91DGCS
SA-VK91DGCP
Colour
(S)... Silver Type
A
udio performance (Amplifier)
Input sensitivity/Input impedance
A
ux 250 mV, 20 kΩ
Phone jack
Terminal Stereo, 3.5 mm jack
Mic jack
Sensitivity 0.7 mV, 600 Ω
Terminal Mono, 6.3 mm jack (2 system)
n CASSETTE DECK SECTION
Type Auto Reverse
Track system 4 Track, 2 Channel
Head 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 (TYPE I) 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
Disc played [8 cm or 12 cm]
(1) DVD-RAM (DVD-VR compatible, JPEG formatted disc)
(2) DVD-Audio
DVD Stereo System
Specifications
ORDER NO. MD0407366C3
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Summary

Specifications

AMPLIFIER SECTION

Details speaker output power for various channels.

DISC SECTION

Lists supported disc formats including DVD-Video and CD-Audio.

Before Repair and Adjustment

Safety Precautions

General Guidelines

General rules for safe and effective servicing procedures.

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

Cautions to be taken when handling Optical Pickup

Precaution of Laser Diode

Operation Procedures

Procedure for repairing the set

Distinguish the problem

Methods to identify the cause of a fault or symptom.

Troubleshooting Guide Part 1

Troubleshooting steps for power supply and transformer circuits.

Diagnosis of Optical Pick-up Unit

Procedures for diagnosing the optical pickup unit for faults.

Optical Pickup Self-Diagnosis and Replacement Procedure

Self-diagnosis

Steps to initiate the unit's self-diagnosis function.

Self-Diagnosis Function

Automatic Displayed Error Codes

How the unit automatically displays error codes upon failure.

Memorized Error Codes

Method to activate and view stored error codes for diagnosis.

Things to Do After Repair

Cautions To Be Taken During Servicing

Recovery after the dvd player is repaired

Steps for recovery processing after replacing key components.

Disassembly and Assembly of Main Component

Disassembly flow chart

Visual chart outlining the sequence for disassembling main components.

Disassembly of Main P.C.B., Speaker P.C.B., Sub Power P.C.B., Power P.C.B., Transformer P.C.B. & Voltage Selector P.C.B.

Detailed steps for removing various main circuit boards.

Replacement for optical pickup unit (DVD mechanism)

Procedure for replacing the optical pickup unit within the DVD mechanism.

Service Position

Checking the Main P.C.B., Speaker P.C.B., Power P.C.B., Sub Power P.C.B., Transformer P.C.B., Voltage Selector P.C.B. and AC Inlet P.C.B.

How to check major power and circuit boards.

Checking the Panel P.C.B., Tact P.C.B., Mic P.C.B., Deck P.C.B. & Deck Mechanism P.C.B.

How to check panel, mic, deck, and mechanism circuit boards.

Measurements and Adjustments

Cassette Deck Section

Measurement conditions and instruments for cassette deck adjustments.

Schematic Diagram

Optical Pickup Unit Circuit

Schematic of the optical pickup unit's internal circuitry.

(A) DVD Module Circuit

Schematic diagram for the DVD module, showing input/output connections.

(B) Main Circuit

(H) Power Circuit

(J) Speaker Circuit

Printed Circuit Board

Wiring Connection Diagram

IC6800 (C2 CBJG000460) System Microprocessor

Parts Location and Replacement Parts List

Deck Mechanism (RAA3412-S)

DVD Loading Mechanism

Electrical Parts List

List of all electrical components including ICs, transistors, diodes, and resistors.

Panasonic SB-VK91 Specifications

General

USB Playback	Yes
CD Playback	Yes
Playback Formats	MP3, WMA
Tuner Bands	FM/AM
Frequency Response	20 Hz - 20 kHz