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YORKVILLE AP2020 Service Manual

YORKVILLE AP2020
21 pages
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U.S.A.
Yorkville Sound Inc.
4625 Witmer Industrial Estate
Niagara Falls, New York
14305 USA
Voice: (716) 297-2920
Fax: (716) 297-3689
WORLD HEADQUARTERS
WEB ACCESS: http://www.yorkville.com
CANADA
Yorkville Sound
550 Granite Court
Pickering, Ontario
L1W-3Y8 CANADA
Voice: (905) 837-8481
Fax: (905) 837-8746
Quality and Innovation Since 1963
Printed in Canada
SERVICE MANUAL
MODEL TYPE: YS2020
M 1129 (input board)
Schematic
PCB Layout
M 1130 (power amp module)
Schematic
PCB Layout
M 1131 (power supply board)
Schematic
PCB Layout
M 1132 (pot board)
Schematic
PCB Layout
Manual-Service-ap2020-00-2v7 Jun 24, 2009
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YORKVILLE AP2020 Specifications

General IconGeneral
Frequency Response20Hz - 20kHz
Input Impedance (Balanced)20k ohms
Input Impedance (Unbalanced)10k ohms
Input Sensitivity1.4V
THD< 0.1%
Signal to Noise Ratio> 100dB
Connectors (Inputs)XLR, 1/4" TRS
Weight (lbs)28
Weight (kg)12.7
TypePower Amplifier
Power Output (2 ohms)1000 Watts (per channel)
Bridged Mono Output (8 ohms)2000W
ProtectionThermal, DC
Connectors (Outputs)Speakon
Dimensions (DWH, cm)48.3 x 8.9 x 40
Weight28 lbs
Power Output2000 Watts (1000 Watts / Channel)
Input Impedance20 kOhms Balanced, 10 kOhms Unbalanced
Dimensions (DWH, inches)19 x 3.5 x 15.5
Dimensions19 x 3.5 x 15.5 inches / 48.3 x 8.9 x 39.4 cm

Summary

IMPORTANT SAFETY INSTRUCTIONS

AP2020 Parts List 6/24/2009

M1130 PRODUCTION NOTES

M1131 PRODUCTION NOTES

PRODUCTION NOTES M1132 AP2020 M1132B VX1200

AP2020 ",

Visual Inspection and Test Setup

Overview of visual checks and preliminary test procedures for the amplifier.

Activity Leds, Clip Level, Clip LED Level:

Test output voltage levels for various events and load conditions, including activity and clip LEDs.

LIMITER

Procedure to test the limiter function by increasing output level and observing output.

CONTINUOUS POWER (BCD)

Measure output voltage and power at clipping point under rated load conditions.

Short Circuit:

Procedure to test the output short circuit protection response and reset.

Short Circuit (Bridge Mode):

Test short circuit protection for bridge mode output and verify reset.

Input/Output Relationship:

Confirm gain pot control of Channel A and Channel B output levels.

Signature:

Initial units on transformer mounting plate to confirm completion.

Sampled Tests:

Test TRIAC DC Overload Protection on selected units from each run.

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