Denon POA 1500 Service Manual

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D E N O I l Hi-FiStereO Power Amplifier

SERVICE MANUAL
MODEL PDA-IEDD

STEREO POWER AMPLIFIER

CONTENTS
SPECIFICATIONS .......................................................... 1
DESCRIPTION OF PARTS AND THEIR FUNCTION .................................. 2
CONNECTIONS ............................................................ 3
TROUBLE SHOOTING ....................................................... 4
METHOD OF ADJUSTMENT ................................................. 5,6
SEMICONDUCTORS ......................................................... 6

PRINTED WIRING BOARD PATTERNS AND PARTS LIST
CONTROL 81 PS. UNIT (ETCOSZ7D/C/B) ...................................... 7, 8
POWER AMP 8 POWER SOURCE UNIT (PUSDOZI L) ............................... 9.10
CONNECTION DIAGRAM ..................................................... 11
WIRING DIAGRAM ......................................................... 12
EXPLODED VIEW .......................................................... 13

NIPPON COLUMBIA CO. LTD.

AUG. 1983

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I POA- 1500 _

SPECIFICATIONS
POWER AMPLIFIER

Rated Output Power: (when both channel are used)
20 Hz to 20 kHz ..... 150 W + 150 W (Speaker impedance 8 ohm)
20 Hz to 20 kHz (Speaker impedance 4 ohm) USA. and MULTI
1 kHz 150 W + 150 W (IEC) (Subject to change by temperature test)
150 Watts per channel minimum RMS, both channel driven at 8 ohm from
20 Hz ~ 20 kHz no more than 0.005% total harmonic distortion. (U:S.A.)
Total Higher Harmonic Distortion: 0.002% (at the rated output providedl-3 dB) speaker impedance assumed to
be 8 ohm
Cross Modulation Distortion: 7 kHz/60 HZ: 1/4, less than 0.0015% (at the time of operation with the .
power amplification equivalent to the rated output)
speaker impedance assumed to be 8 ohm
Output Frequency Bandwidth: 5 Hz ~ 80 kHz (IHF)
(IHF, T.H.D 0.015%), speaker impedance assumed to be 8 ohm

Transmission Characteristic: 1 Hz ~ 300 kHz :3 dB (at an output of 1 W)
Input Level: 1 V (NORMAL)
1.41 V (HIGH CUT FILTER IN)
Input Impedance: 18 k ohm (NORMAL IN)
25 k ohm (HIGH CUT FILTER lN)
Output Impedance: 0.1 ohm (1 kHz)
SN Ratio (IHF "A"): 123 dB
Hi Cut Filter: 40 kHz 6 dB/oct (FILTER IN)
Subsonic Filter: 16 Hz 6 dB/oct
Slew Rate: i400 V/Msec
PEAK LEVEL METER OPERATION CHARACTERISTIC
Type of Indication: Peak output level indication
Range of Indication: -50 dB ~ +5 dB
0 dB = 200 W/8 ohm
Frequency Response: 10 Hz ~ 100 kHz :3 dB impedance assumed to be 8 ohm
OUTPUT TERMINALS SPEAKERS: Aor B Load 8 - 16 ohm (IEC)
A+BLoad160hm (IEC)

SPEAKERS: Aor B Load 4 ohm to 16 ohm, USA. and MULTI
A+ 8 Load 8 - 16 ohm

SEL F-DIAGNOSTIC FUNCTION Abnormal temperature detection and problem indication
Left-channel and right-channel abnormal output level check and indication

OTHERS

Power Source: AC 120 V, 60 Hz
or AC 110/120/220/240 V, 50 Hz
or AC 220 V, 50 Hz
or AC 240 V, 50 Hz

Power Consumption: 300 W (IEC)
380 W (U.S.A. and MULTI)

Dimensions: 470 x 168 x 418 (including control knobs, and stand)

Weight: 20 kg

POA~1500 design and specifications are subject to change without notice. I

NOTE: The following codes correspond to the appropriate models.
E3 for U.S.A., EC for Canada, E2 for Europe, and E1 for Hong Kong, Singapore. .
This Service Manual is prepared based on E3.