Pioneer QX-949 User Manual

Explains the receiver's protection circuit and its function to prevent damage.

Details the CD-4 demodulator's phase lock loop circuit and FET for stable operation.

Highlights built-in high-performance decoders for Regular Matrix and SQ matrix.

Explains the use of MOS FETs and a 4-ganged tuning capacitor for improved FM reception.

Lists the receiver's 4-channel capabilities like discrete, matrix, and 2-channel matrix reproduction.

Emphasizes the need for a CD-4 specific cartridge and proper installation for CD-4 records.

Provides step-by-step instructions for preparing and connecting speaker wires to terminals.

Details types of FM antennas and connection methods for optimal reception.

Details how to connect tape decks for recording, including input terminals.

Explains how to connect tape decks for playback, including output terminals.

Explains the knob's function in adjusting CD-4 carrier output level for ASC circuit.

Controls for adjusting front and rear separation when playing CD-4 records.

Selector for 2-channel and various 4-channel reproduction methods (CD-4, RM, SQ).

Guides users to verify all connections are correct by checking speaker output.

Details the process for adjusting the balance controls for all channels.

Instructions for tuning FM stations, optimizing signal, and setting the mode.

Steps for tuning AM stations and adjusting controls for comfortable listening.

Covers adjustments for carrier level and channel separation for CD-4 records.

Step-by-step guide to adjust the carrier level using the test record.

Explains how to adjust separation using CD-4 separation controls and level indicator.

Verifies correct speaker connections by playing a channel check signal.

Process for adjusting channel balance using the test record and controls.

Instructions for playing tapes using the appropriate monitor buttons and MODE switch.

Identifies common noises during broadcasts and their suspected sources and remedies.

Lists noises during record playback, their causes, and troubleshooting steps.

Lists symptoms often mistaken for malfunctions and their diagnosis/remedy.

Explains how CD-4 records encode audible and inaudible signals for 4-channel sound.

Details how signals A, B, C, D are used for 4-channel reproduction with appropriate equipment.

Explains the principle and signal processing for Regular Matrix 4-channel records.

Describes the signal separation and blending in the SQ Matrix system for 4-channel sound.