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Need help?Do you have a question about the Marantz AV8802/U1B and is the answer not in the manual?
Explains the manual's search and navigation functionalities for efficient use.
Instructions for using the Sign function in Adobe Reader to add notes to the manual.
Details on using the Pan & Zoom function to view specific areas of diagrams.
Emphasizes paying attention to service cautions labeled on cabinets, parts, and chassis.
Highlights precautions for handling high voltage parts and avoiding electric shock during servicing.
Advises caution regarding burrs on sheet metal parts that could cause injury.
Stresses the importance of using specified parts for safety properties like fire resistance.
Instructs to restore parts and wires to their original positions for safety.
Details post-service safety checks, including insulation resistance.
Explains special properties of certain parts indicated by the z mark.
Notes on schematic diagrams including resistance and capacitance value indications.
Guidelines for ordering parts, including distinctions and illustrations.
Procedures for preventing electrostatic breakdown during repair work.
Detailed technical specifications for the audio input and output stages.
Technical specifications for video input/output levels and frequency response.
Specifications for FM and AM reception, including sensitivity and signal-to-noise ratio.
Specifications for wireless LAN connectivity, including standards and security.
Technical specifications for Bluetooth communication system, power, and range.
General specifications including power supply, consumption, and dimensions.
Procedure for initializing the unit after replacing major components like the microcomputer.
Identifies necessary jigs (extension cable kit) for PCB repair.
Lists the components and sub-assemblies of the front panel for disassembly.
Details the disassembly procedure for the CX870 ASSY, specific to CX870 models.
Outlines the disassembly steps for the HDAM ASSY.
Provides the disassembly procedure for the SMPS ASSY.
Details the disassembly steps for the POWER TRANS.
Lists the components and sub-assemblies of the back panel for disassembly.
Details the button combinations required to enter various special modes.
Explains how version information is displayed when the device starts in this mode.
Procedure for starting the Version Display Mode using specific buttons.
Defines the sequence in which error information and model details are displayed.
Describes how to turn the PANEL LOCK and REMOTE LOCK modes on and off.
Procedure for starting the PANEL / REMOTE LOCK selection mode.
Explains how to view and select each mode, indicating On/Off status.
Selects diagnostic, 232C standby clear, Operation Info, or TUNER STEP modes.
Procedure for starting service-related modes using specific buttons.
Details how the display changes and how to set each mode.
Explains the function's convenience for confirming problem paths and performing checks.
Procedure for starting the diagnostic mode, including segment indications.
Instructions on how to cancel the diagnostic mode.
How to switch between video and audio items, and select previous/next items.
Details confirmation items for various audio paths and their settings.
Troubleshooting steps for issues where the unit does not power on.
Procedure for checking and replacing blown fuses.
Identifies test points on the AUDIO VIDEO PCB for analog video signal checks.
Troubleshooting steps for HDMI connections with no picture or sound.
Procedure for checking audio output across different input types and modes.
Troubleshooting steps for network connectivity issues.
Troubleshooting steps when the DC 5V output is not detected.
Illustrates sample waveforms for clock and data signals.
Provides level diagram details for the front audio channels.
Block diagram illustrating the power supply distribution.
Block diagram showing the CPU control flow and connections.
Printed wiring board layout for the digital section, A side.
Schematic diagram of the digital connect block.
Schematic diagram for the old version of the main CPU.
Schematic diagram for the new version of the main CPU.
Schematic diagram for the sub CPU.
Schematic diagram for the decoder circuit.
Schematic diagram for HDMI SW1, specific to AV8802 models.
Schematic diagram for HDMI SW1, specific to AV8802A models.
Schematic diagram for HDMI SW2, specific to AV8802 models.
Schematic diagram for HDMI SW2, specific to AV8802A models.
Schematic diagram of the IP Scaler circuit.
Schematic diagram detailing the IP Scaler DDR connections.
Schematic diagram for the Video PLD, specific to AV8802 models.
Schematic diagram for the Video PLD, specific to AV8802A models.
Schematic diagram for HDMI RX TX, specific to AV8802 models.
Schematic diagram for HDMI RX TX, specific to AV8802A models.
Schematic diagram for HDMI supply, specific to AV8802 models.
Schematic diagram for HDMI supply, specific to AV8802A models.
Schematic diagram for the network module, AV8802 only.
Schematic diagram for the network module, AV8802A old version.
Schematic diagram for the network module, AV8802A new version.
Schematic diagram for the main DAC circuit.
Schematic diagram for the main DAC circuit.
Schematic diagram for the Zonedac ADC circuit.
Schematic diagram for the Zonedac ADC circuit.
Schematic diagram for the rear USB unit.
Schematic diagram for the audio/video connection unit.
Schematic diagram for the audio volume control.
Schematic diagram for the pre-output connections.
Schematic diagram of the video selector circuit.
Schematic diagram illustrating various unit connections.
Schematic diagram for the HDAM XLR amplifier unit.
Schematic diagram for XLR input and remote IO connections.
Schematic diagram for the front HDMI and USB connections.
Schematic diagram illustrating the front panel components and their connections.
Schematic diagram for the HDAM connect unit.
Schematic diagram for the phono stage circuit.
Schematic diagram for the Switched-Mode Power Supply (SMPS) unit.
Schematic diagram for the XLR output stage, channel 1.
Schematic diagram for the XLR output stage, channel 2.
Schematic diagram for the XLR output stage, channel 3.
Schematic diagram for CX870 connect unit, AV8802 only.
Schematic diagram for the Bluetooth module, AV8802 only.
Lists the main ICs used in the unit with their terminal functions.
General
