Table Of Contents; Specifications - Sansui BA-3000 Service Manual

1. SPECIFICATIONS
POWER OUTPUT
Min. RMS, both channels driven, 20 to 20; 000Hz; with
no. more than: 0.05% total harmonic distortion in
stereo 'Operation
170 watts per channel into 8 ohms
170 watts per channel into 4 ohms
85 watts per channel into 16 ohms
Min. RMS. both channels driven, at 1,000Hz, with no more than 0.05%
total harmonic distortion in stereo operation.
180 watts per channel into 8 ohms
170 watts per channel into 4 ohms
. 95 watts per channel into 16 ohms
Min. RMS, from 20-to 20,000Hz, with no more than
0.05% total harmonic distottion: | in mono (BTL) operat
tion. ao ;
"340 watts into 8 ohms
340 watts' into 16 ohms
Min. RMS, at 1,000Hz, with no more than 0.05% total harmonic
distortion in mono (BTL) operation.
340 watts into 8 ohms
360 watts into 16 ohms
LOAD IMPEDANCE
In stereo operation ...... 4, 8,16 ohms
In mono (BTL) operation ..8, 16 ohms
POWER BANDWIDTH...... 20 to 20,000Hz at or below
rated min. RMS, power
output and total harmonic
distortion
TOTAL HARMONIC DISTORTION
ibaa ais eoiy of Misses ctor ter less than 0.05% at or below
rated min. RMS power
output
2. BLOCK DIAGRAM
_ Level -, Buffer' Amp.
_-- Subsonic Filter.
'INTERMODULATION DISTORTION
(70Hz : 7,000Hz=4 : 1 SMPTE mothod)
Satine wvada deinen sie less than 0.05%
FREQUENCY RESPONSE (at 7 watt) :
oAeklakes taihnd na etas 5Hz to 100kHz *$ dB
DAMPING FACTOR ........ approximately 100 at
8 ohms load
CHANNEL SEPARATION (at rated output, 1kHz)
boston Data niga s, tment better than 60dB
HUM AND NOISE (IHF) . . better than 100dB
INPUT SENSITIVITY AND IMPEDANCE
(1kHz, for rated output) ..700mV 50kQ,
SUBSONIC FILTER .....-..-- -3dB at 15Hz (12dB/oct)
GENERAL
POWER VOLTAGE.......- 400, 120, 220, 240V 50/60Hz
120V (Usable 110-130V)
(for U.S.A. & Canada only)
POWER CONSUMPTION. .1,100 watts (max.)
350 watts (rated)
DIMENSIONS .........-. -.460mm (18)4") W
178mm (7 %")H
400mm (1534") D
WEIGHT: shGt oceanic 22.6kg (49.8 Ibs.) net
25.4kg (56.0 Ibs.) packed
* Design and specifications sbject to change without notice for
improvements.
ame
"Power Amp:. Protector
- Absorber .
TABLE OF CONTENTS
Section Title Page
1. SPECIFICATIONS.......................... 02a ee 2
2. BLOCK DIAGRAM .....................0...0- 200s 2
3. ADJUSTMENTS .................0 0.000. c eee eee 3
3-1. Driver Circuit Board Adjustments.....-....-.-... 3
3-2. Power Meter Adjustment ...-.-.-...--2-2-0-0-5 3
4. TROUBLESHOOTING CHART...................... 4
4-1. Operation Block Diagram ......-....--.--02000+ 4
4-2. Main Troubleshooting on Each Section............ 5
5. PARTS LOCATIONS AND PARTS LISTS ....... :., 6
5-1, F-2507 Driver Circuit Board .................265 760°
5-2. F-2511 SP Protector Circuit Board .....-... easy 7:8
5-3. F-2510 Circuit Board for installing emitter.......- 8
5-4. F-2514 Meter Lamp Circuit Board..........-..... 8
Section Tide Page
5-5. F-2506 Input Terminal Circuit Board ...........- 8
5-6. F-2512 Connector Circuit Board ...........-...+ 8
5-7. F-2513 Filter Circuit Board .................00005 9
5-8. F-2508 Power Supply Volume Circuit Board .... 10
5-9. F-2515 Meter Amplifier Circuit Board .......... 11
5-10. F-2509 Circuit Board for installing connector.... L1
STL FIQUreS fai. science oie eteicied ee ed vance Leese iae de 12
5-12. Power Supply Voltage chanegeover ............ 12
5-13. Other Parts (Top, Bottom Side) .........-.-...- 13
'5-14. Other Parts (Front Side) ......-....-....0- 14,16
6. SCHEMATIC DIAGRAM .......................... i5
7. PACKING LIST .......................0.00.000008. 16
~ 8. ACCESSORY PARTS LIST........................ 16