Sanyo ja 2003
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Page 1
IV
SERVICE MANUAL
STEREO AMPUFIER
715 SANYO
JA 2003
(EUROPE)
1
SPECIFICATIONS
The below mentioned specifications are mainly based on the lHF measurements standard. They can
therefore not directly be compared with specifications based on the DIN standard or other standards.
Continuous output power ........... 30 W x 2 (at 8 ohms, 0.1% distortion)
Total harmonic distortion ........... 0.08% (25 W output, 8 ohms)
Input sensitivity and impedance
PHONO ..................... 2.5 mV/47 kohms
AUX/TUNER/TAPE PLAY ........ 150 mV/47 kohms
Phone overload level ............... 120 mV RMS (at 1 kHz)
Output level
TAPE REC ................... 150 mV
Frequency response ............... 10 Hz - 40 kHz (AUX)
Tone control response
BASS ....................... :8 dB (at 100 Hz)
TREBLE ..................... :8 dB (at 10 kHz)
High filter response ................ 8 kHz (-6 dB/oct.)
Loudness controi response (Vol. -30 dB)
100 Hz/10 kHz ................ +8 dB/+4 dB
Signal to noise ratio ............. 70 dB
Power requirements ............... AC: 220 V. 50 Hz
Power consumption ............... 140 W
Dimensions (Aporox.) .............. 420 (W) x 250 (D) x 88 (H) mm
........................... (16-1/2" x 9~13/16"x 3-1/2")
Weight (Approx.) ................. 4.9 kg (10 lbs. 13 ozs.)
" Specifications subject to change without notice.
WM-6350
MC-Service
Page 2
ADJUSTMENT
1. ADJUSTMENT 0F BIAS
' CONDITIONS
VOLUME CONTROL: 0" (Mimimum)
BALANCE CONTROL VOLUME: 0" (Center)
BASS CONTROL VOLUME: 0" (Center)
TREBLE CONTROL VOLUME: "0 (Center)
FUNCTION SWITCH: TUNER
MONITOR SWITCH: SOURCE A
HIGH FILTER SWITCH: OFF
LOUDNESS SWITCH: OFF
SPEAKER SWITCH(A): ON
SPEAKER SWITCH(B): OFF
OUTPUT LOAD: NO LOAD
After the power switch is turned on, adjust SVR701 and
SVRBOI respectively as follows.
L~channelz SVR701 for 2~3mV reading between the
both leads of R716. '
R-channel: SVRBO1 for 2~3mV reading between the
both leads of R8174
2. ADJUSTMENT OF POWER LEVEL METER
* CONDITIONS
INPUT SIGNAL: 1 kHz, 150 mV
OUTPUT LOAD: 8 $2, 100 W, non-inductive resistance
VOLUME CONTROL: "10" (Maximum)
Apply the signal from the test oscillator (1 kHz, 150 mV) as
input to the tuner terminals.
Adjust SVR702 (L-channel) and SVR802 (RAchannel) so
that the power level meter indication becomes 30W when
the speaker (A) output voltage is 30 W (15.5 V).
DIGITAL VOLT METER(DC)
SVR 702
POWER
LEVEL
METER
TEST OSCILLHOH
(OSCILLAYOF & ATTENquR)
DIGITAL VOLT METER(DC)
TLZJ
INPuI
V'IVM
OSCILLDSCOPE
OUTPUT (5P)
SEY
SVR 801
BIAS
SVR 802
POWER
LEVEL
METER