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PIONEER XR-A4900/NVXJ
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of PIONEER XR-A4900/NVXJ Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 53 (click to view)
XR-A6800, XR-A4800

6. ADJUSTMENT
6.1 TUNER SECTION
FM Tuner Section
� Set the mode selector to FM BAND. � Connect the wiring as shown in Fig. 1. Step No. Adjustment Title FM SG (1kHz, ± 75kHz dev.) Frequency Level (MHz) (dBµV)
106 98 (ON STEREO) 98 0 to 30

Reception Frequency Display
106MHz

Adjustment Location
L6104 L6105 L6102 T6101 T6101 VR6201

Specifications

1

Front End Sensitivity Stereo Distortion TUNED IND. Lighting Level

Adjust so that the DC voltage between the IC6201 - pin 20 and GND becomes at maximum level. Minimize the distortion with 1/8 rotation of the core. Adjust so that the indicator of TUNED IND. starts to light up.

2 3

80 18 ± 2

98MHz 98MHz

Note: Before adjusting, make sure there is no gap between L6101 and L6102 as well as between L6103 and L6104. If there is a gap between them, bring them into contact with each other first, and then make adjustments.

AM Tuner Section
� Set the mode selector to AM BAND. � Connect the wiring as shown in Fig. 1. Step No. Adjustment Title
Front End Sensitivity

AM SG (400Hz, 30% Mod.) Frequency Level (kHz) (dBµV/m)
999 (�1) 35 to 45

Reception Frequency Display
999kHz (�1)

Adjustment Location

Specifications
Adjust so that the DC voltage between the IC6201 - pin 20 and GND becomes at maximum level.

1

T6201

Note (�1) : For the area using 10kHz step, frequency should be 1000kHz. 60cm Loop antenna

AM SG

Center

Center

AM antenna terminal DC Voltmeter

MPX SG

FM SG FM75� antenna terminal

PRODUCT

Fig.1 AM and FM Adjustment Wiring Diagram
FM/AM TUNER MODULE
AM antenna terminal T6201 AXX7042 YELLOW FM antenna terminal BLACK L6105 T6101 L6102 L6103 L6104

IC6201 Pin 20
VR6201

L6101

Fig.2 Adjustment Point
53

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