Pioneer a 400 service manual

Page 1

PIONEEIQ

The future of sound and vision.

Sefiicc

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ORDER NO.
mmmmmwm ARP2044
STEREO AMPLIFIER
A - 3 D 0
MODEL A-4OO AND A-300 HAVE FOLLOWING VERSIONS:
Applicable model
WPe Power requirement Expon destination
A-400 A600
H8 0 O A0220V, 240V (swilchable) United Kingdom

* Change the conneclion OI Ihe power lranslmmer lead wire.

0 This manual is applicable to (he A-AOO/HB and A-300/HB types.
I Ce manuel pour Ie service comprend Ies explications de réglage en frangais.
I Este manual de servicio Irata del método ajuste escrito en espafiol.

CONTENTS
1. SPECIFICATIONS ....................... 2 7. ELECTRICAL PARTS LIST ............... 27
2. EXPLODED VIEWS, PACKING AND PARTS LIST 3 a, ADJUSTMENTS ....................... 31
3. SCHEMATIC DIAGRAM (FOR A-400/HB TYPE) 7 a, REGLAGE ............................ 32
4. PC. BOARDS CONNECTION DIAGRAM a, AJUSTE .............................. 33
IFORA40WHBTYPB ------------------- ll 9 FRONT PANELFAOUTES IIIIIIIIIIIII 34
54 PC. BOARDS CONNECTION DIAGRAM
(FOR A-300/HB TYPE) ................... l7

6. SCHEMATIC DIAGRAM (FOR A-300/HB TYPE) 23

PIONEER ELECTRONIC CORPORATION 4-1, MegurO 1-Chome Meguro-ku, Tokyo 153. Japan

PIONEER ELECTRONICS SERVICE INC. PO. Box 1760, Long Beach, California 90801 USA.

PIONEER ELECTRONICS OF CANADA, INC. 505 Cochrane Drlve. Markham. Ontano L3H 8E3 Canada

PIONEER ELECTRONIC [EUROPE] N.V. Keelberglaan l, 2740 Beveren, Belqum

PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 1787184 Boundary Road. Braeside, ViCIorIa 3195, AusIraIIa TEL: [03] 580-9911

© PIONEER ELECTRONIC CORPORATION 1990 SEV MM 99 primed in Japan

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A-400, A-300

1. SPECIFICATIONS
(A400)

Amplifier Section
Continuous power output (both channels driven at 20 Hz to 20 kHz)
T.H.D.0.03 %, SQ, .SOW + 50W
T.H.D. 0.05 °/a, 4 Q . 70 W + 70W
DIN Continuous power output (both channels driven at 1 kHz)
T.H,D.1,0%,8fl .60W+60W
T.H,D.1,0%,4TZ .85W+85W
Dynamic power output (on EIA dynamic test signal)
8(1/4 0/29 ........................................... 7O W/1OO W/135W
Total harmonic distortion '
20 Hz to 20 kHz, 50 W, 8 ('2
20 Hz to 20 kHz, 70 W, 8 (2
Input sensitivity/impedance
PHONO (MM) , 2.5 mV/SO kfl
PHONO (MC), 02 mV/lOO 0
CD, TUNER, LINE, TAPE .................................. 150 mV/BO kn
PHONO overload level
1 kHz, T,H.D. 0,008 /0 (MM/MC).
Output level/impedance

0.03 %
0.05 %

............. 150 mV/12 mV

TAPE REC .................................................... 150 mV/2.2 kfl
Frequency response
PHONO (MM). 20 Hz to 20 kHz, : 0,3 dB

PHONO (MC).. 20 Hz to 20 kHz, : 0.5 dB

CD, TUNER, LINE, TAPE ...................... 5 Hz to 100 kHz, :3 dB
Signal-to-Noise ratio (IHF short circuit, A network)

PHONO (MM, 2.5 mV input/MC, 02 mV input) ...... 87 dB/69 dB

CD, TUNER, LINE, TAPE .................................... 108 dB
SignaI-to-Noise ratio (DIN, continuous power/50 mW)

PHONO (MM) ............ . 74 dB/63 dB

CD, TUNER, LINE, TAPE, , 88 dB/SS dB
Power Supply/Miscellaneous
Power requirements ............................. at. 240 V ~, 50/60 Hz
Power consumption. ................................. 520 W
Dimensions ......... 420 (W) x 352 (D) x 126 (H) mm

Weight (without package) . . 8.0 kg
Accessories
Operating instructions ........................................................ 1

- Specificatios and design subject to possible modification without
notice, due to implovements,

Measured by Audio Spectrum Analyzer,

[A-300]

Amplifier Section
Continuous power output (both channels driven at 20 Hz to 20 kHz)
T,H.D. 0.03 %, 8 i1 30 W + 30 W
T.H.D. 0.05 %, 4 (I .t 40W + 40W
DIN Continuous power output (both channels driven at 1 kHz)
T.H,D.1.0%,8fl.. ,.4OW + 40W
T.H.D. 1.0 /o,4fl.. ..60W + 60W
Dynamic power output (on EIA dynamic test signal)
8 9/4 3/2 0 .............................................. 50 W/75 W/90 W
Total harmonic distortion '
20 HZ to 20 kHz, 40 W, 8 0..
20 Hz to 20 kHz, 50 W, 8 ('2 ,.
Input sensitivity/impedance
PHONO (MM) ...........
CD, TUNER, LINE, TAPE
PHONO overload level

.003%
.0,05%

2.5 mV/SO k9
. 150 mV/SO k9

1 kHz, T.H.D. 0.02 /0 (MM) .................................... , 150 mV
Output level/impedance

TAPE REC .................................................... 150 mV/2.2 ((9
Frequency response

PHONO (MM) ............................... 20 Hz to 20 kHz, 1 0.3 dB

CD, TUNER, LINE, TAPE ,,,,,
Signal-to-Noise ratio (IHF short circu
PHONO (MM, 25 mV input)

5 Hz to 100 kHz, :2 dB
A network)

83 dB

CD, TUNER, LINE, TAPE ..... . 108 dB
Signal-to-Noise ratio (DIN, continuous power/50 mW)

PHONO (MM) ........... .. 73 018/63 ()8

CD, TUNER, LINE, TAPE .. 88 (13/65 dB

Power Supply/Miscellaneous

Power requirements a.c 240 V ~, 50/60 Hz

Power consumption .................. 410 W
Dimensions ,,,,,,,, . 420 (W) x 352 (D) x 126 (H) mm
Weight (without package) ............................................. 6.8 kg
Accessories

Operating instructions ......................................................... l

- Specificatios and design subject to possible modification without
notice, due to improvements.

' Measured by Audio Spectrum Analyzer,