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POWER AMPLIFIER
SERVICE MANUAL
XP3500
XP2500
XP1000
s CONTENTS
SPECIFICATION 3
DIMENSIONS 5
PERFORMANCE GRAPHS 5
PANEL LAYOUT 6
CIRCUIT BOARD LAYOUT 7
WIRING 9
DISASSEMBLY PROCEDURE 10
IC BLOCK DIAGRAM 16
CIRCUIT BOARDS 16
INSPECTIONS 26/31
BLOCK DIAGRAM
OVERALL CIRCUIT DIAGRAM
PARTS LIST
XP1000: 200512-134400
PA 011814 XP2500: 200512-176400
XP3500: 200512-207900 Copyright (c) Yamaha Corporation. All rights reserved. M
I '06.02
XP1000/XP2500/XP3500
IMPORTANT NOTICE
This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic
service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users,
and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury,
destruction of expensive components, and failure of the product to perform as specified. For these reasons, we
advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or
the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and
changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please
contact the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have
accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).
IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.
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 YOUR MOUTH FOR ANY REASON WHAT-
SOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/
flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.
This applies only to products distributed by Yamaha-Kemble Music (U.K.) Ltd.
2
XP1000/XP2500/XP3500
s SPECIFICATIONS
XP3500 100 V (J) 120 V (U,T) 230 V (H,B,K,O) 240 V (A)
Output Power 1 kHz 8 /STEREO 390 W+390 W 390 W+390 W 390 W+390 W 390 W+390 W
THD+N= 1 % 4 /STEREO 590 W+590 W 590 W+590 W 590 W+590 W 590 W+590 W
8 /BRIDGED 1180 W 1180 W 1180 W 1180 W
20 20 kHz 8 /STEREO 350 W+350 W 350 W+350 W 350 W+350 W 350 W+350 W
THD+N= 0.1 % 4 /STEREO MIN 450 W+450 W 450 W+450 W 435 W+435 W 450 W+450 W
8 /BRIDGED 900 W 900 W 870 W 900 W
100 V/BRIDGED RL=16 625 W 625 W 625 W 625 W
1 kHz 2 /STEREO 1000 W+1000 W 1000 W+1000 W 925 W+925 W 1000 W+1000 W
20mS nonclip 4 /BRIDGED 2000 W 2000 W 1850 W 2000 W
SN Ratio 20Hz-20kHz (DIN AUDIO) MIN 102 dB
Power Standby / idle 5 W / 30 W
Consumption 1/8 (4 /Pink noise) 450 W 450 W 450 W 450 W
XP2500 100 V (J) 120 V (U,T) 230 V (H,B,K,O) 240 V (A)
Output Power 1 kHz 8 /STEREO 275 W+275 W 275 W+275 W 275 W+275 W 275 W+275 W
THD+N= 1 % 4 /STEREO 390 W+390 W 390 W+390 W 390 W+390 W 390 W+390 W
8 /BRIDGED 780 W 780 W 780 W 780 W
20 20 kHz 8 /STEREO 250 W+250 W 250 W+250 W 250 W+250 W 250 W+250 W
THD+N= 0.1 % MIN
4 /STEREO 300 W+300 W 300 W+300 W 295 W+295 W 300 W+300 W
8 /BRIDGED 600 W 600 W 590 W 600 W
1 kHz 2 /STEREO 650 W+650 W 650 W+650 W 650 W+650 W 650 W+650 W
20mS nonclip 4 /BRIDGED 1300 W 1300 W 1300 W 1300 W
SN Ratio 20Hz-20kHz (DIN AUDIO) MIN 100 dB
Power Standby / idle 5 W / 25 W
Consumption 1/8 (4 /Pink noise) 320 W 320 W 320 W 320 W
XP1000 100 V (J) 120 V (U,T) 230 V (H,B,K,O) 240 V (A)
Output Power 1 kHz 8 /STEREO 110 W+110 W 135 W+135 W 125 W+125 W 120 W+120 W
THD+N= 1 % 4 /STEREO 120 W+120 W 165 W+165 W 155 W+155 W 155 W+155 W
8 /BRIDGED 240 W 330 W 310 W 310 W
20 20 kHz 8 /STEREO 100 W+100 W 110 W+110 W 100 W+100 W 100 W+100 W
THD+N= 0.1 % MIN
4 /STEREO 100 W+100 W 125 W+125 W 115 W+115 W 110 W+110 W
8 /BRIDGED 200 W 250 W 230 W 220 W
1 kHz 2 /STEREO 250 W+250 W 250 W+250 W 250 W+250 W 250 W+250 W
20mS nonclip 4 /BRIDGED 500 W 500 W 500 W 500 W
SN Ratio 20 Hz-20 kHz (DIN AUDIO) MIN 96 dB
Power Standby / idle 5 W / 20 W
Consumption 1/8 (4 /Pink noise) 150 W 170 W 170 W 170 W
All Models
Power Bandwidth Half Power, THD+N= 0.5 % MIN 10 Hz-40 kHz
THD+N 20 Hz20 kHz, Half Power MAX 0.1 %
Intermoduration Distortion 60 Hz:7 kHz, 4:1, Half Power MAX 0.1 %
Frequency Response RL=8 , Po=1 W, HPF=OFF MAX 0 dB
20 Hz-50 kHz TYP 0 dB
MIN -1 dB
Channel Separation Half Power, RL=8, 1 kHz,
MIN 70 dB
Att. max, input 600 shunt
Residual Noise 20 Hz20 kHz, Att. min,
MAX -70 dBu
(DIN AUDIO)
Damping Factor RL=8 , 1 kHz MIN 200
Voltage Gain Att. max TYP Selectable from 32 dB or 26 dB (or +4 dBu input sensitivity) by select switch
Input Sensitivity (dBu) Att. max, Rated Power 8 XP3500 XP2500 XP1000
Switch Position +4 dBu +4 +4 +4
26 dB +10.7 +9.2 +5.2
36 dB +4.7 +3.2 -0.8
Maximum Input Voltage MIN +22 dBu
Input Impedance TYP 20 k (balanced), 10 k (unbalanced)
Controls Front Panel POWER switch (push on/push off)
attenuator (31 position) x 2
Rear Panel MODE switch (STEREO/BRIDGED/PARALLEL) x 1
HPF switch (20 Hz/55 Hz/OFF 12 dB/oct) x 2
GAIN SELECT switch (32 dB/26 dB/+4 dBu) x 1
3
XP1000/XP2500/XP3500
All Models
Connectors Input XLR-3-31 type/ch, Euroblock connector (balanced) /ch
Output SPEAKON/ch, 5 way binding post x 1
MONITOR/REMOTE Dsub 15 P x 1
Indicators POWER/STANDBY x 1 (Green/Orange)
SIGNAL x 2 (Green)
CLIP/LIMIT x 2 (Red)
PROTECTION/TEMP x 1 (Red)
x 1 (Red) heatsink temp 85 °C
Load Protection POWER switch on/off mute
DC-fault:
output relay off/restored automatically.
Clip limiting : THD 0.5 %
Amplifier Protection Thermal:
Cuts the output (heatsink temp 90 °C) ; operation not restored automatically.
VI limiter (RL 1 ): Limit the output.
Power Supply Protection Thermal:
Power supply shutdown (transfomer temp 130 °C) ; restored automatically.
Cooling Variable-speed fan: x 1
Fan stop at heatsink temp < 55 °C
Power Requirements J: 100 V 50/60 Hz
UC: 120 V/60 Hz
HB: 230 V/50 Hz
A: 240 V/50 Hz
Dimensions (W x H x D) 480 x 88 x 456 mm
Weight XP3500 XP2500 XP1000
15 kg 14 kg 12 kg
Included Accessories Security cover (with a hex wrench), Owner's Manual
0 dBu=0.775 Vrms, Half Power=1/2 Output Power (3 dB below rated power)
s MONITOR/REMOTE
Pin No. Signal Description
1 GND
2 REMOTE CONTROL STANDBY STANDBY Control: Supply 5 VDC, 5 mADC
3 MONITOR MODEL ID XP3500: 1.5 k, XP2500: 1.8 k, XP1000: 2.2 k (Impedance to GND)
4 REMOTE CONTROL NC
5 NC
6 MUTE CH B MUTE Control: Connect to GND, +5 V, 1 mA
7 MUTE CH A
8 MONITOR NC
9 NC
10 PROTECT STATUS CH B PROTECTION Off/ Output On: +5 VDC, Zo=270
11 PROTECT STATUS CH A PROTECTION On/ Output Off: 0 VDC, Zo=High
12 NC
13 NC
14 OUTPUT LEVEL CH B XP3500, XP2500, XP1000
15 OUTPUT LEVEL CH A +4dBu (-27.2 dB of Speaker Output Level) at 100 W/8 , RL=7.5 k , Zo=300
4
XP1000/XP2500/XP3500
s DIMENSIONS
30
374.5
456
5.5
46
30 362 30
480
88
Unit: mm
s PERFORMANCE GRAPHS
XP1000 XP2500
Mode:STEREO Mode:STEREO
Both ch Driven Both ch Driven
RL=4 , f=1 kHz RL=4 , f=1 kHz
1000 10000
Power Consumption [W]
Power Consumption [W]
1000
100
100
10
10
1 1
1 10 100 1000 1 10 100 1000
Output Power [W] Output Power [W]
XP3500
Mode:STEREO
Both ch Driven
RL=4 , f=1 kHz
10000
Power Consumption [W]
1000
100
10
1
1 10 100 1000
Output Power [W]
5
XP1000/XP2500/XP3500
s PANEL LAYOUT
w r *The illustration shows model XP3500.
u q e t y u
q POWER switch and indicator q
w TEMP indicator w
e PROTECTION indicator e
r CLIP indicator r
t SIGNAL indicator t
y Volume control knobs y
u Air intakes u
r e t y u
q w u i
q XLR inputs connectors q
w Euroblock connectors w
e HPF switches e
r GAIN switch r
t MODE switch t
y MONITOR/REMOTE terminals y
u SPEAKERS terminals u
i GND terminal i
6
XP1000/XP2500/XP3500
s CIRCUIT BOARD LAYOUT
IO4/4
DC IN
IO3/4
PSW IO1/4
DC
LED IO2/4
VR PAL
B
C
A
7
XP1000/XP2500/XP3500
Detail Drawing A
Detail Drawing B
Detail Drawing C
8
XP1000/XP2500/XP3500
s WIRING
1
G
2 LED
TM
3
PO !3
FAN
4
PR
W307
GRAY
PSW
VR CN303
5
ACL
W310
!2 W309
PH7P 6
ASIG SAN10P VIOLET
y !3
NC
7
B3
B2
B1
A3
A2
A1
BCL
8 W308
BSIG GRAY
9
1
2
3
4
5
6
7
+24V XP3500 only
10
SBY
2
1
10
9
2
1
8
7
6
5
4
3
CN416
PAL PH10P DC
FAN-
BSIG
ASIG
SBY
+24V
BCL
ACL
PO
TM
PR
G
G
CN415
PH2P 1
CN441
CN414 PH6P CN413 2
PH15P VH3P GND
1 3
1 G 24
PRH1 2
2 SB
CN102 CN103 CN104 PRH2 3
RED BLACK WHITE
+B G -B
PRE1
3
4
u 4
BMUTE
AMUTE CN412
PRE2 5
ARY
5 r 6
BPS
APS
BLACK
G W401
RED
6 +B
BRY
ASIG
7
!4 TRANS
8
G
9
BSIG W403 W402
10 WHITE BLACK
A+
11 -B G
A-
A
12
13
!6 !5 CN410 CN411
B+ VIOLET ORANGE
14
B- CN409
15 ORANGE
B
CN105 CN106 CN408
ORANGE
OUT A
YELLOW
OUT B t CN406
BLACK
YELLOW BLUE CN403
BROWN RED VIOLET CN405
L N WHITE
CN401
GRAY BLUE
CN101
PH15P
XP3500 only
PRH1
PRH2
PRE1
PRE2
ASIG
BSIG
CN404
BRY
ARY
+15V
CN407
-15V
B+
A+
NC
BLACK
BS
AS
A-
B-
YELLOW BLUE
G
A
B
G
G
G
BROWN RED BROWN
CN501 CN402
10
11
12
13
14
15
FG
3
4
5
6
7
8
1
2
9
PH8P
8
7
6
5
4
3
2
1
GRAY
Except J destination
!1
i
!0 o
A1 NC
7
A2
IO 1/4 -15V
8
6 7
2
3
4
5
6
2
1
2
1
4
3
4
3
1
A3 G
5 6
NC +15V W306 CHB W304
CHA
4 5
CHB
CHA
AMUTE
BPS