Yamaha Ls 9 Service Manual

SERVICE MANUAL
HAMAMATSU, JAPAN
SERVICE MANUAL
LS9-16:	200610-724500LS9-32:	200610-1354500
PA011829
Copyright	 (c) 	 Yamaha 	 Corporation. 	 All 	 rights 	 reserved. 		 PDF 						’06.11
SPECIFICATIONS（総合仕様）   .................................4
PIN ASSIGNMENTS（ピンアサイン表）   .................10
DIMENSIONS（寸法図）   ..........................................10
PANEL LAYOUT（パネルレイアウト）   .....................11
CIRCUIT BOARD LAYOUT
（ユニットレイアウト）   .............................................17
DISASSEMBLY...

LS9-16/LS9-32
2

 WARNING
WARNING: CHEMICAL CONTENT NOTICE!
The  solder  used  in  the  production  of  this  product  contains  LEAD.  In  addition,  other  electrical/electronic  and/or  plastic  (Where  applicable) components  may  also  contain  traces  of  chemicals  found  by  the  California  Health  and  Welfare Agency  (and  possibly  other  entities)  to  cause cancer and/or birth defects or other reproductive harm.
DO  NOT  PLACE  SOLDER,  ELECTRICAL/ELECTRONIC  OR  PLASTIC  COMPONENTS  IN...

3
LS9-16/LS9-32

IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord
WARNING:THIS APPARATUS MUST BE EARTHEDIMPORTANT. The wires in this mains lead are coloured in accordancewith the following code: GREEN-AND-YELLOW : EARTHBLUE: NEUTRALBROWN: LIVEAs the colours of the wires in the mains lead of this apparatus may notcorrespond with the coloured markings identifying the terminals in your \
plug proceed as follows:The wire which is coloured GREEN-and-YELLOW must be connected tothe terminal...

LS9-16/LS9-32
4

 SPECIFICATIONS（総合仕様）
General Specications
Signal Delay¢³¬Æçß蠣Less than 2.5 ms (INPUT to OMNI OUT @Fs=48 kHz)
Dimensions¢
GO£LS9-16:480 x 220 x 500 mmLS9-32:884 x 220 x 500 mm
Net Weight¢í”£LS9-16:12.0 kgLS9-32:19.4 kg
Power Requirements¢?o“7£LS9-16:95 W, 110—240 V, 50/60 HzLS9-32:170 W, 110—240 V, 50/60 Hz
Temperature Range¢9S
c“£Operating:+10˚C to +35˚CStorage:–20˚C to +60˚C
Included Accessories¢
Ç
¼£Owner’s Manual, AC Power Cord, Dust Cover (only...

5
LS9-16/LS9-32

Analog Input Characteristics
*1. Sensitivity is the lowest level that will produce an output of +4 dBu (1.23 V) or the nominal output level when the unit is set to maximum gain. (all fad-  ers and level controls are maximum position.)
*2. XLR-3-31 type connectors are balanced. (1=GND, 2=HOT, 3=COLD)
*  In these specifications, 0 dBu = 0.775 Vrms.
*  All input AD converters are 24-bit linear, 128-times oversampling.*  +48V DC (phantom power) is supplied to INPUT XLR type connectors via...

LS9-16/LS9-32
6

I/O Slot Characteristics
The rear panel provides one slot (LS9-16) or two slots (LS9-32) in w\
hich separately sold mini-YGDAI cards can be installed.
The following types of card can be used.
Only Slot 1 has a serial interface (LS9-32).
Refer to the Yamaha Pro Audio global website for the most recent information on mini-YGDAI cards\
.
http://www. yamahaproaudio.com/
Control I/O Characteristics
*1. Bus-powered hubs are not supported.*2. 4 pin=+12 V, 3 pin=GND, Supported lamp: max. 5 W...

7
LS9-16/LS9-32

All faders are nominal when measured. Output impedance of signal generator: 150 ohms
Frequency Response
Fs = 44.1 kHz or 48 kHz@20 Hz–20 kHz, referenced to the nominal outpu\
t level @1 kHz 
Gain ErrorFs = 44.1 kHz or 48 kHz@1 kHz
Total Harmonic DistortionFs = 44.1 kHz or 48 kHz
*  Total Harmonic Distortion is measured with a 18 dB/octave filter @80 kHz
Hum & NoiseFs = 44.1 kHz or 48 kHz, EIN = Equivalent Input Noise
*  Hum & Noise are measured with a 6 dB/octave filter @12.7 kHz;...

LS9-16/LS9-32


Crosstalk@1 kHz
Maximum Voltage Gain@1 kHz
Phantom Voltage
FromToConditionsMin.Typ.Max.Unit
INPUT nINPUT (n–1) or (n+1)CH 1-16 {1-32}, Adjacent inputs, GAIN: min.–80dBOMNI OUT nOMNI OUT (n–1) or (n+1)OMNI OUT 1-8 {1-16}, Input to output–80
InputOutputRLConditionsMin.Typ.Max.Unit
INPUT 1-16 INPUT 1-32 OMNI OUT 1-8 OMNI OUT 1-16 600 ΩRs=150 Ω, Input GAIN: max.86dB
OutputConditionsMin.Typ.Max.Unit
INPUT 1-16 INPUT 1-32 hot & cold: No load464850V
Dynamic RangeFs = 44.1 kHz or 48 kHz
*...

9
LS9-16/LS9-32

Libraries
Input Function
Output Function
Output Port
Processor
Other Functions
NameNumberTotal
Scene MemoryPreset 1 + User 300301
Input EQ LibraryPreset 40 + User 159199
Output EQ LibraryPreset 3 + User 196199
Dynamics LibraryPreset 41 + User 158199
Effect LibraryPreset 57 + User 142199
GEQ LibraryPreset 1 + User 199200
FunctionParameter
PhaseNormal/Reverse
Attenuator–96 to +24 dB
HPFSlope= 12 dB/Oct
Frequency= 20 Hz to 600 Hz
4 Band Equal-izer
Frequency= 20 Hz to 20 kHz
Gain= –18 dB to...

LS9-16/LS9-32
10

LAMP (LS9-32 only)
14
2
PinSignal Name
1
2
3
4
NC
NC
GND
+12V
3

25430
480
25
220
500
220
500
884
8342525
6OJU£ mm
LS9-16
LS9-32

 DIMENSIONS（寸法図）
 PIN ASSIGNMENT（ピンアサイン表）