Sansui AUX 911 DG Service Manual

Page 1

I, SERVICE MANUAL 1_ ADJUSTMENT

Conditions: 1. Ambient temperature . 5. If the protector relay operates, remove the bottom plate and

S ANSUI 2. VOLUME ...... .. connect a DC voltmeter as described below.
1 SPEAKERS-A SWiiCh is ON. H/G balance: Between ®and ©
4. SOURCE DIRECT OPERATION switch is 59! at H/C balance: Between ®and ®
SOURCE.
W 1-1 . F-6160 Driver AMP Adjustment (See Figs. 1-1 and 1-2)
g mmmmmmm-XQHDG f I".
- E , STEP SUBJECT MEASURE OUTPUT ADJUST ADJUST FOR REMARKS
- ' ' 1 HOT/6ND balance Connect a DC voltmeter between the HOT speaker KVR2 DC 0V
m adiustment terminal and the GND terminal for the left channel (F-61SO) iSOmV
INTEGRATED DIGITA I AMPLIFIER (L. R-CH) Connect tor the right channel in the same way. (L, Ft-CH)
2 HOT/COLD balance Connect a DC voltmeter between the HOT and Wm DC 0V
adjustment COLD speaker terminals for the left channel. (F-6160) tSOmV
(L, Ft»CH) Connect for the right channel in the same way. (L, R-CH)
Fig. 1-1 F-6160 adjustment volume position (seen from above) 3 1'3 56154 adjustment-volume position
(reached by removrng left Side cover)
kél kVR4 kVR3 kg? Front Panel ASS'y~A
, Non: (3 l @ - f
CAUTION , . , r'a; 5160 .51
1. Parts identified by the A symbol on the schematic diagram and the The SW35; EU, EG: SS 3'14 XX "1 W5 59M Manual 0
list are critical for salety. "199" followlngs [Mb/Bl" 0
parts -- EU Man tact red for Eur ean market
Use only replacement parts that have critical characteristics recom- u FUR G op _
mended by the manufacturer. tstod t that 5:33:61 ed '2:wa9 t. El
2. Make leakage-currentorresistance meesuremen e ermine - - . ' '3] Y WW9 , . ,
exposed parts areacoepteblyinsulatedtromthesupply circultbetore Manulectured tor SaudiArahia market FIS~ 1'2 F6169 DC voltmeter 50""91'0" Pomts (seen from below) iVFl5~fi/
ramming the appliance to the customer. )<°E(XPORT> Standard VerSIon. Hot F-s169 Cold E
NON MARK .......... Common Pans. _ ,
iVRS-L/ T
Specifications Mme". 0.9
F-6154
Power output . Digital Audio I
Min. RMS. both channels driven, from 20 to 20.000 Hz, With no Frequency respon 4 Hz to 20 kHz, :05 dB 1
more than 0.005% total harmonic distortion. SIN ,,,,,,,,,,,,,,, 100 dB
100 watts per channel into 8 ohms Dynumic ungg 98dB
DIN Harmonic distortion kl-l2). 0.003%
120 watts per channel into 4 ohms Digital input level/impedance... 0.5Vp~p/75 ohms
LOld 1'95".a 0 l6 ohms Digital output level/impedance , ,
Intermodulation . 7 kHz = 4:1 SMPTE method) .......... .0,5Vp-p/75 ohms _ 1-2. F-6154 Flat AMP Adjustment (See Flg. 1-3)
..................................... . .less than 0.005% at rated power Omicl input/output 660 nm (emitted light wave {
I t h . . . . .
Frequency rewonu (at 1 watt] O W B B leng ) Condition: For adjustment of this flat amp only, set VOLUME at maxrmum.
Overall (from CD) ................... DC to 200,000 Hz, +0 d , -3 d .
RIAAcurve deviation iPHONO-MM, 20 Hz to 20 kHz) PM" """'"""s"" '"""5AoC/61(,2%;22°V/240V- STEP SUBJECT MEASURE OUTPUT ADJUST ADJUST FoR REMARKS
............... +02 dB, v0.2 (13
Input sons rty and impedance let 1 kHz) P For U S'A' 8 C_anad ngnox 6:821le Rated 1 HOT/COLD balance Connects DC voltmeter between the HOT and jVFl5L. in DC 0V - Set the SOURCE DIHECT OPERA.
pHono (MC) ............. aoo pV/IOO ohms °°' °°"''""°" " we 5 . adjustment com speaker terminals for the left channel, (p.51 54) :1 omv TION switch to SOURCE.
"""""" 720 watts Maximum Connect tor the right channel in the same way
Dimensions ................................. 430 mm (7 6-15/16') W '
EMF "4." WW 163mm (6-7/16') H y . ,
PHONO (MC TRANS)........ 160 uV/16 ohms 450 mm (1 7.3/41 D Note: When usung a metal flathead screwdriver, insulate it and never allow the metal part of the screwdriver to touch the chassis within the
' ..................................... 18.2 it 40.1 lb t , adusrment hole.
PHOMO (MM) ............... szmvl/u kzhm; 01 y I h Wm 20.0kgglltAJ lhssl):aecked
(Ma .' tce ab'l' 210 mV atl z, esst an . tota ar- . .
mogc'gfliomfin, " ° , 1-3. F-6169 Power AMP Balance Current Adjustment (See Figs. 1-1 and 1-2)
CD, TUNER. LINE. .150 [UV/477 :0ng Accessories
TAPE/DAT PLAY-1, "150 m 4 0 ms Remote Controller (RS-1130) Conditions: 1. INPUT SELECTOR CD
0 P71065330? fiTHHN. . 150 mV/47 kohms Batteries (SUM-3/"AA'-Sizel.. 2 2 SPEAKERS load . Ohms
utputllv ( . z ' 'I' . . . .
TAPHDAT REC-1, 2, 3 . .,150 mV into 47 kohms . Design and specifications subtoct to changes without notice 3. Input a 20 kHz Sine wave from an ossillator tdthe CD input terminal, output 35 W (16.8V) at a load of 8 Ohms for five minutes
PROCESSOR SEND. 50 mV into 47 1(0th for improvements. to preheat, and then adjust the VOLUME to minimum.
Signal to Oi I'I [57'0'1'9 uit, A-network) ' Due to local law: and regulations, this unit sold in some ar-
EgollSNlEhglMlllNE $160de at: are not equipped with variable voltage selectors. STEP SUBJECT MEASURE OUTPUT ADJUST ADJUST FOR REMARKS
TAISE/DAT ELAY- , . 1 10 dB 1 Bias current adjust- Connect a Dc voltmeter between ® and © Shown in Kvns DC 5mV - Set the SOURCE DIRECT OPERA-
Controls and Filter . ment (HOT amp) Fig. 12 (both ends of H68) on the HOT side olthe lelt (F~61eo) xtmv TlON switch to SOURCE
BASS... :gddBB 3220an , channel. Connecttorthe right channel In thesameway.
TRE BL . . at z
SUBSONIC 3 dB at 16 Hz (12 dB/oct) 2 Bias current adjust- Connect a DC voltmeter between ® and ® Shown in kVFt4 Dc 5mV - Alter performing this adjustment (bias
M UTlNG... 20 dB merit (COLD amp) Fig. 1-2 (both ends of R71) on the COLD side of the left (F6160) i1mV WITSNIL 3993 adiflflmeflls 1'1 and
LOUDNESS. , .+6 dB at 50 Hz ohannel.Cunnecttortherightchannellnthesamewey. 1-2.
(VOLUME: -30 dB position) +3dB at 10 kHz

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AU-X911DG AU-X911DG

4-12. F-6154 Control AMP Board 4-17. F-6167 Tone Control Board 4-19. F-6169 Power AMP Board
Component Side Component Side Component Side

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4-13. F-6162 PHONES lack Board 4-15. F-6164 SPEAKERS
Component Side Switch Board
Component Side

4-18. F-6168 SOURCE DIRECT
OPERATION Switch Board
Component Side

112818333

4-14. F-6163 D/A Converter Power Supply Board

Component Side
4-16. F-6166 Power Fuse Board

Component Side

_ POWER SUPPLY (m) cull-29ml
616 3 , o 51 65 5

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CAUTION

54 AGAINST FIRE HAZARD. REPLACE DMLV WITH '3'
SAME TYPE FUSEIS).

11