To Next PageTo Next PageWhy my Panasonic SA-HT640WP cannot read disc but spindle is spinning?
If your Panasonic Home Theater System cannot read a disc but the spindle is spinning, check the laser drive circuitry for voltages and current. You may also need to check the CD and DVD laser drives.
Why is my Panasonic SA-HT640WP Home Theater System picture black and white only?
If your Panasonic Home Theater System displays a picture in black and white only, check the C (chroma) signal if you are using Composite or S-Video. If you are using Component, check the Pb & Pr signals.
What causes No TOC/Long TOC on Panasonic SA-HT640WP Home Theater System?
If your Panasonic Home Theater System has no TOC or a Long TOC, check the motor driver circuitry for voltages. Also, check the laser drive circuitry for voltages and current, and inspect the LSI connection to the motor drive circuitry.
Why is there no DVD Audio output on my Panasonic SA-HT640WP?
If your Panasonic Home Theater System has no DVD Audio output, check the test point for CPPM key download, as the CPPM key download may be NG. Also, check the EEPROM.
What causes jitter out of specification on Panasonic SA-HT640WP Home Theater System?
If the jitter is out of specification on your Panasonic Home Theater System, check the LD current and try changing the OPU to another unit to confirm.
General| Brand | Panasonic |
|---|---|
| Model | SA-HT640WP |
| Category | Home Theater System |
| Total Output Power | 1000 W |
| Number of Channels | 5.1 |
| Number of Speakers | 6 |
| DVD Player | Yes |
| HDMI Inputs | 2 |
| USB Playback | Yes |
| Surround Sound Formats | Dolby Digital, DTS |
| Progressive Scan | Yes |
| DTS Decoder | Yes |
| USB Port | 1 |
| HDMI Output | 1 |
| Bluetooth | No |
| Remote Control | Yes |
| Speaker Type | Satellite |
| Subwoofer | Yes |
| Audio Output Power | 100 W |
General specifications including power, dimensions, and mass.
Details on RMS output power, total power, and frequency response.
FM tuner specifications including preset memory, frequency range, and sensitivity.
AM tuner specifications including frequency range and sensitivity.
General guidelines to be followed during servicing and operation.
Precautions to take before performing repairs or adjustments.
Explanation of the unit's protection circuitry and its operation.
Cautions for handling the optical pickup unit to prevent damage.
Procedures for grounding to prevent electrostatic discharge damage.
Instructions on how to operate the unit using the remote control.
Explanation of the functions of the remote control key buttons.
Explanation of the functions of the main unit's key buttons.
Explanation of the buttons on the wireless surround speaker unit.
Information about the types of discs supported and cleaning procedures.
Details about the RF wireless audio transceiver system.
Key features of the RF wireless audio transceiver.
Explanation of Class-D amplifier technology and its benefits.
Potential problems associated with Class-D amplifier systems.
Summary table of service modes and their applications.
Procedure for optical pickup self-diagnosis and tilt adjustment.
List of error codes for the DVD self-diagnostic function.
Flowchart illustrating the disassembly sequence of the unit.
Diagram showing the locations of main components and PCBs.
Step-by-step instructions for disassembling the top cabinet.
Step-by-step instructions for disassembling the front panel assembly.
Step-by-step instructions for disassembling the tray assembly.
Step-by-step instructions for disassembling the rear panel.
Step-by-step instructions for disassembling the mechanism base assembly.
Step-by-step instructions for disassembling the FL and headphone PCB.
Step-by-step instructions for disassembling the main PCB.
List of service tools and equipment for measurements and adjustments.
Important points to consider before and during adjustment procedures.
Key considerations for optical adjustment procedures.
Guidelines for storing and handling test discs.
Procedures for performing optical adjustments.
Detailed procedure for optical pickup tilt adjustment.
Step-by-step guide for performing the optical adjustment.
Voltage measurements for various points on the DVD Module PCB.
Voltage measurements for various points on the Main PCB.
Voltage measurements for various points on the Power PCB.
Voltage measurements for various points on the FL PCB.
Notes regarding modifications and voltage measurements in schematic diagrams.
Safety precautions when working with ICs and LSIs.
Printed circuit board layout for the DVD module (Side A and B).
Printed circuit board layouts for the Main, AC-Inlet, and Sub Power PCBs.
Printed circuit board layout for the Power PCB.
Printed circuit board layouts for FL, Headphone, Loading motor, Tray motor, Sensor, and Regulator PCBs.
Guide for troubleshooting issues with the DVD module's firmware and key download.
Troubleshooting steps for firmware and key download failures.
Troubleshooting guide for initialization and playability problems.
Troubleshooting steps for the digital receiver unit of the wireless system.
Step-by-step troubleshooting guide for the digital amplifier circuit.
Block diagram specific to the SC-HT640 DVD unit.
Information on replacing service parts.
Details on replacing the transmitter assembly.
Pin assignments and functions for the MN101C49GHG micro-processor.
Exploded view showing the location of cabinet parts.
Important notes regarding safety, part specifications, and markings.
Detailed list of all component parts for replacement.
