Pioneer a 80 service manual

Page 1

(U) PIONEER

CIRCUIT DESCRIPTIONS
REPAIR & ADJUSTMENTS ORDER NO.
ARP- 349 -0
STEREO AM PLIFIER
MODEL A-80 COMES IN FIVE VERSIONS DISTINGUISHED AS FOLLOWS:
Type Voltage .. Remarks
HE AC22OV, 240V (switchable) European continent model
HB AC220V, 240V (switchable) United Kingdom model
5 AC1 10V, 120V, 220V, 240V (switchable) General export model
S/G AC1 10v, 120v, 220v, 240v (switchable) u.s. Military model
HEZ AC220V. 240V (switchable) West Germany model
I This service manual is applicable to the HE type.
For servicing of the HE, S and SIG types, please refer to the page 39-40.
For HEZ type, please refer to the additional service manual (ARP-35l-O).
I Ce manuel d'instruction se refére au mode de réglage, en franeais.
I Este manual de servicio trata del método de ajuste escrito en espafiol.
1. SPECIFICATIONS .................... 2 9. SCHEMATIC DIAGRAM ................ 25
2. FRONT PANEL FACILITIES ............ 3 10. ELECTRICAL PARTS LIST .............. 30
3. BLOCK DIAGRAM .................... 5 11. ADJUSTMENTS ...................... 35
4. CIRCUIT DESCRIPTIONS ............... 7 REGLAGE .......................... 36
5. PARTS LOCATION .................... 9 AJUSTE ............................ 37
6. PACKING ........................... 11 12V SAFETY INFORMATION ................ 3B
7, EXPLODED VIEWS AND PARTS LIST ....... 12 13. FOR HB TYPE ...................... 39
8 PC. BOARDS CONNECTION DIAGRAM ..... 17 14 FOR 3 AND S/G TYPES ................ 4O

DIONEEH ELEOTFIONIO CORPORATION 4-1. Meguma erhorYe. Meguro-ku, Tokyo 1513,Japan
lamest: Emma (USA) me. 1925 E. Dcmmguaz Sc. Lcflg Beach. Callfomva 9081:] USA.

men ELECTRONIC: [EUROPE] N.V. Keecbergiaan 1. 2740 Beveven, Belgium

IIIONEER emu: AUSTRALIA m. LTD. 175484 Bowdary Fined. Braestcle. chLoma 3195. Auscrai-a

YZ © )UNE 1933 Printed in japan

Page 2

1. SPECIFICATIONS

Amplifier Section

Continuous Average Power Output
is 150 watts* per channel, min., at 8
ohms from 20 Hertz to 20,000 Hertz
with no more than 0.003% total har-
monic distortion**.

Continuous Power Output at 1 kHz
(both channel driven)
T.H.D. 0.003%, 8 ohms ....... 150 watts per channel
T.H.D. 1%,80hms ..... 220watts per channel (Din)
Music Power Output at 1 kHz (both channel driven)
5 model
T.HD. 1 %, 8 ohms .................... 313 watts per channel
Total Harmonic Distortion (20 Hertz to 20,000 Hertz, 8 ohms,
from CD/AUX 1)
continuous rated power output
.. ............................. No more than 0.003%
75 watts per channel power output
............................................ "No more than 0.003%
lntermodulation Distortion (50 Hertz: 7,000 Hertz = 4 2 1,
8 ohms, from CD/AUX 1)
continuous rated power output

............................................... No more than 0.003%
Damping Factor (20 Hertz to 20,000 Hertz, 8 ohms) .......... 80
Input (Sensitivity/ Impedance)

PHONO MMA 02.5 mV/50 kilohms

PHONO MC .. ...0.25 mV/40 ohms.
0.15 mV/3 ohm MC transformer

TUNER, CD/AUX1, AUX2, TAPE PLAY 1,2

.................................................. 150 mV/SO kilohms

Phono Overload Level (T.HtD. 0.003%, 1 kHz)

PHONO MM ,300mv

PHONO MC ..18mV
Output (Level/Impedance)

TAPE REC 1,2 .i 150 mV/2.2 kilnhms

SPEAKERS ,,,,, .r OFF, A or B, Aand B

Frequency Response
PHONO MM (RIAA Equalization)

........................................ 20 Hz to 20,000 Hz : 0.2 dB

TUNER, CD/AUX1, AUX2, TAPE PLAY 1, 2

............................................ 5 Hz to 100,000 Hz :3 dB
Tone Control

BASS .t.:10d81100Hz)

TREBLE , ..:10dB(10kHz)
Filter

LOW (SUBSONIC) ........................... 15 Hz (6 dB/oct)
Hum and Noise (IHF, short circuited A network)

PHONO MM ...... ...IdB

PHONO MC ........ 75dB (3/40 ohms)

TUNER, CD/AUXl, AUX2, TAPE PLAY 1, 2 ........ 109 dB
Hum and Noise (DIN, continuous rated power output/50 mW)

PHONO MM .......................................... 74 113/61 dB

TUNER, CD/AUX 1, AUX 2, TAPE PLAY 1, Z

Miscellaneous
Power Requirements
HE model ................................. a.c.220V~, 50/60 Hz
S, 5/6 models
~ a.c. 110 V/120 V/ZZOV/240V (switchable) 50/60 Hz
HB model ................................ a.c.240V~,50/60 Hz
Power Consumption
HE model .1,000W(max.)

S,S/G models ...300W(max.)

HB model ......... . 1,000W lmax.)

Dimensions ......................... 420(W) x150iH) x 420 (D) mm

1&9/16iW) x 5-7/8iH) x 16-9/16lD) in

Weight (without package) ...................... 16.8 kg (37": ioz)
Furnished Parts

Operating instructions ................................................ 1

Measured pursuant to the Federal Trade Commissions Trade
Regulation rule on Power Output Claims for Amplifier.

Measured by Shibasoku 725 Automatic Distortion Analyzei

NOTE:
Specifications and design subject 10 possible modification "'th Ill
notice due to improvements