Denon POA T3 Service Manual

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SERVICE MANUAL

MODEL FDA-Terra
MODEL FDA-3200

STEREO POWER AMPLIFIER

FDA-3200

POA-T2 POA-T3
- TABLE OF CONTENTS -

OPERATING INSTRUCTIONS (POA-T2fl3) ........................................................ 2-5
OPERATING INSTRUCTIONS (FDA-3200) ....................................................... 6-11
DISASSEMBLY ....................... . 12-15
BLOCK DIAGRAM ......... . 16
METHOD OF ADJUSTMENT . . 17
SEMICONDUCTORS ........................................................................... 18
NOTE FOR PARTS LIST ......... , ................................................................ 19
PARTS LIST OF PRINTED WIRING BOARD . . . 20.21
PARTS LIST OF EXPLODED VIEW (FDA-Ta) ....... . . 22
EXPLODED VIEW (POA-TS) .................... . 23
PARTS LIST OF EXPLODED VIEW (POA-TZ/SZOO) ................................................... 24
EXPLODED VIEW (POA-T2/3200) ................................................................. 25
PRINTED WIRING BOARD . . . I ' 26,27
WIRING DIAGRAM ............................................................................ 28
SCHEMATIC DIAGRAM ........................ I ................................................ 29

NIPPON COLUMBIA CO.. LTD.

313w

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_ FDA-W200 -

METHOD OF ADJUSTMENT

IDLE CURRENT ADJUSTMENT

0 Setup
1. Keep the unit away from direct wind blown by an air-conditioner and an electric fan, and keep the unit under normal
conditions. Adjust the range of ambient temperature to 15 - 30°C.
2. Set the following conditions as follows:
. 0 POWER (Power switch) to off

I SPEAKERS (Speaker Terminal) to no load (Speakers Disconnected)(.3ut SP-A SW to on.)
0 Disconnect input terminal

c Adjustment

1. Connect DC Voltmeter to Test points (TP101) of 1U-2909.

2. Turn POWER Switch ON.

3. Adjust VR102 so that the DC Voltmeter reads 2 i 0.5mV. '
4. Then after 3 minutes wam~up time, readjust VR102 so that the DC Voltmeter reads 2 i 1mV. :
5. Adjust each channel as same way above.

OFFSET ADJUSTMENT
oSetup

1. Keep the unit away from direct wind blown by an air-conditioner and an electric fan, and keep the unit under normal
conditions. Adjust the range of ambient temperature to 15 - 30°C.
2. Set the following conditions as follows:
0 POWER (Power switch) to off
0 SPEAKERS (Speaker Terminal) to no load (Speakers Disconnected)(,But SP-A SW to on.)
0 Disconnect input terminal

o Adjustment

1. Connect Speaker A terminal to DC Voltmeter and oscilloscope.

2. Adjust oscilloscope range to 5mV/div.

3. Tum Power Switch ON".

4. Adjust VR101 so that the DC Voltmeter reads 0- + 1mV

5 Then after 3 minutes wam- up time, readjust VR101 so that the DC Voltmeter reads 0- + 1mV.
6. Adjust each channel as same way above.

Radiator Plate

E!

D TP101
VFH 02 D

VH101

1U-2909 Power Amp. P.W.Board

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