Pioneer HTP-105 - User Manual

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Summary

Safety Information

Leakage Current Check

Check leakage current to earth ground. Must not exceed 0.5mA to ensure safety.

Product Safety Notice

Use specified PIONEER parts for safety. Substitute parts may cause hazards.

Disassembly Procedures

Power Amp Section Disassembly

Instructions for removing the power amplifier section, including screws and leads.

Grille Section Detachment

Method for detaching the grille using a flat blade screwdriver.

Speaker Removal

Instructions for removing the speaker, involving four screws.

Packing and Parts Identification

Packing Details

Details about packing materials and their part numbers.

Exterior Section Parts List

Lists exterior parts with their mark numbers, descriptions, and part numbers.

Power Amp Section Parts List

Lists power amp section components with mark numbers, descriptions, and part numbers.

Schematic and PCB Diagrams

Notes for Schematic Diagrams

Guidelines for ordering service parts and understanding schematic symbols.

Notes for PCB Diagrams

Explains matching part numbers between PCB and schematic diagrams.

Circuit Diagram Overview

Presents the detailed circuit diagram of the subwoofer.

PCB Parts Listing

Semiconductor Components

Lists semiconductor components with part numbers.

Resistor Components

Lists resistor types, values, and part numbers.

Capacitor Components

Lists capacitor types, values, and part numbers.

Miscellaneous Parts

Lists miscellaneous parts like fuses, screws, and connectors.

Panel Facilities and Controls

Rear Panel Facilities

Identifies and explains front panel controls and indicators.

Technical Specifications

HTP105;205-SW Specifications

Details the technical specifications of the HTP105/205-SW model.

Summary

Safety Information

Leakage Current Check

Check leakage current to earth ground. Must not exceed 0.5mA to ensure safety.

Product Safety Notice

Use specified PIONEER parts for safety. Substitute parts may cause hazards.

Disassembly Procedures

Power Amp Section Disassembly

Instructions for removing the power amplifier section, including screws and leads.

Grille Section Detachment

Method for detaching the grille using a flat blade screwdriver.

Speaker Removal

Instructions for removing the speaker, involving four screws.

Packing and Parts Identification

Packing Details

Details about packing materials and their part numbers.

Exterior Section Parts List

Lists exterior parts with their mark numbers, descriptions, and part numbers.

Power Amp Section Parts List

Lists power amp section components with mark numbers, descriptions, and part numbers.

Schematic and PCB Diagrams

Notes for Schematic Diagrams

Guidelines for ordering service parts and understanding schematic symbols.

Notes for PCB Diagrams

Explains matching part numbers between PCB and schematic diagrams.

Circuit Diagram Overview

Presents the detailed circuit diagram of the subwoofer.

PCB Parts Listing

Semiconductor Components

Lists semiconductor components with part numbers.

Resistor Components

Lists resistor types, values, and part numbers.

Capacitor Components

Lists capacitor types, values, and part numbers.

Miscellaneous Parts

Lists miscellaneous parts like fuses, screws, and connectors.

Panel Facilities and Controls

Rear Panel Facilities

Identifies and explains front panel controls and indicators.

Technical Specifications

HTP105;205-SW Specifications

Details the technical specifications of the HTP105/205-SW model.

Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features (for Qualified Service Technicians)

This document is a service manual for the Pioneer HTP105/205-SW powered subwoofer, providing detailed information for qualified service technicians. It covers safety information, disassembly procedures, exploded views with parts lists, schematic and PCB connection diagrams, PCB parts lists, panel facilities, and technical specifications.

Function Description:

The Pioneer HTP105/205-SW is a powered subwoofer designed to enhance the low-frequency audio output of a home entertainment system. It features a built-in amplifier and is a floor-standing, bass-reflex type unit with a PVC-sheet finish that mimics a wood pattern. The subwoofer is intended to be connected to the SUBWOOFER OUTPUT terminal of a receiver using an RCA cord, providing adjustable bass levels to complement the main audio system.

Important Technical Specifications:

Cabinet Type: Floor, bass-reflex type, with a built-in amplifier and PVC-sheet finish.
Speaker: 20 cm (8 inch) transducer.
Power Amplifier: Continuous Average Power Output of 50 Watts (min) at 4 ohms, from 30 Hertz to 200 Hertz, with no more than 1% total harmonic distortion. This measurement is pursuant to the Federal Trade Commission's Trade Regulation rule on Power Output Claims for Amplifiers.
Input (Sensitivity at 200 Hz/Impedance): Line level input of 180 mV / 33k ohms.
Crossover Frequency: 120 Hz.
Outline Dimension (W x H x D): 291 x 361 x 330 mm (11-7/16 x 14-9/16 x 13 inch).
Weight: 9.8 kg (21 lb 10 oz).
Power Requirements: 120 VAC, 60 Hz.
Power Consumption: 60W.
Accessories: Includes one 10ft RCA cord and one operating instructions manual.

Usage Features:

The subwoofer's rear panel provides key controls and connections for operation:

POWER Indicator: This indicator illuminates RED when the unit is receiving power, providing a visual cue of its operational status.
Subwoofer LEVEL Knob: This knob allows users to adjust the volume of the subwoofer. Turning it clockwise increases the bass level. Users are advised to start at the "MIN" setting and slowly increase the volume to avoid potential hearing or speaker damage. The manual specifically warns against setting the volume excessively high, as low-frequency sounds can be misleadingly less disturbing than high frequencies, and the amplifier and speaker of the HTP105/205-SW can clip when the output of the amplifier or receiver is increased with the subwoofer level set to "MAX."
Subwoofer Input Terminal (LINE LEVEL INPUT): This terminal is used to connect the subwoofer to the SUBWOOFER OUTPUT terminal of a receiver. The connection is made using the provided RCA cord.
Sound Distortion Warning: The manual includes a crucial note regarding potential sound distortion. If the output from the connected receiver is high, or if the receiver's bass control/bass boost is excessively applied, distortion may occur even if the subwoofer's level is lowered. In such cases, users are instructed to reduce the output level (Volume, Bass control, Bass boost) on the receiver side to mitigate distortion.

Maintenance Features (for Qualified Service Technicians):

The manual is primarily a service guide, offering detailed instructions for maintenance and repair:

Safety Information: Emphasizes that the manual is for qualified service technicians due to the complexity and safety aspects of repairs. It warns against improper repairs affecting safety, reliability, and warranty.
Lead Warning: Highlights the presence of lead in solder and advises technicians to avoid unprotected skin contact and inhaling fumes during soldering.
Fuse Symbols (Canadian Model Only): Indicates that replacement fuses must be of identical designation, marked with specific symbols for fast or slow operating fuses.
Safety Precautions (USA Model Only):
- Leakage Current Check: Provides a procedure for measuring leakage current to earth ground using a leakage current tester (e.g., Simpson Model 229-2). The measured current must not exceed 0.5mA. Any measurement exceeding this limit indicates a potential shock hazard and must be corrected before returning the appliance to the customer.
- Product Safety Notice: States that many electrical and mechanical parts have special safety-related characteristics, identified by a "D" mark on schematics and parts lists. Technicians are warned to use only PIONEER-recommended replacement components with identical safety characteristics to prevent shock, fire, or other hazards.
Disassembly Procedures:
- Power Amp Section: Involves removing 8 screws from the power amplifier and disconnecting connector leads.
- Grille Section: The grille is attached with adhesive. To detach, a flat blade screwdriver should be inserted between the cabinet and the grille to pry it open.
- Speaker: Requires removing 4 screws.
Packing, Exploded Views, and Parts List: Provides detailed diagrams and lists of all components, including packing materials, exterior section parts, and power amp section parts. Parts marked "NSP" are generally unavailable, and parts marked with a "D" indicate safety-critical components.
Schematic and PCB Connection Diagrams: Includes detailed circuit diagrams and PCB layouts. It explains symbols used in PCB diagrams and their corresponding schematic representations for transistors, resistors, and 3-terminal regulators.
PCB Parts List: A comprehensive list of all components on the PCB, categorized by type (semiconductors, resistors, capacitors, and miscellaneous), with part numbers and descriptions. Safety-critical parts are marked.
Ordering Service Parts: Technicians are instructed to refer to the "PARTS LIST of EXPLODED VIEWS" or "PCB PARTS LIST" when ordering parts.
Circuit Changes: Notes that some circuit parts or component values may be changed for improvement, indicating that schematics are basic representations.
Component Markings: Explains the meaning of various markings for resistors (unit, rated power, tolerance), capacitors (unit, ratings), coils (unit), voltage and current (signal voltage, DC voltage, DC current), and other symbols (adjusting point, measurement point).
Switch Information: Provides details on switches, including their positions (e.g., PHASE Rev / Norm, AUTO POWER ON/OFF).