PARTS LIST
BLOCK DIAGRAM(ブロックダイアグラム )
LEVEL DIAGRAM(レベルダイアグラム)
WIRING(結線図)
CIRCUIT DIAGRAM(回路図)
PA
012180
HAMAMATSU, JAPAN
Copyright (c) Yamaha Corporation. All rights reserved. PDF ’16.10
PX10/PX8/PX5/PX3
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, de-
IMPORTANT : This presentation or sale of this manual to any individual or firm does not constitute authorization certification, recog-
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
struction 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.
nition of any applicable technical capabilities, or establish a principal-agent relationship of any form.
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 parts replacement. Recheck all work before you apply power to the unit.
WARNING: This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER!
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.
IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord
WARNING: THIS APPARATUS MUST BE EARTHED IMPORTANT. The wires in this mains lead are coloured in accordance with
the following code:
GREEN-AND-YELLOW : EARTH
BLUE : NEUTRAL
BROWN : LIVE
As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the
terminals in your plug proceed as follows:
The wire which is coloured GREEN-and-YELLOW must be connected to the terminal in the plug which is marked by the letter E
or by the safety earth symbol
The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
or colored GREEN or GREEN-and-YELLOW.
(3 wires)
WARNING
Components having special characteristics are marked and must be replaced with parts having specification equal to those
originally installed.
Insert the SpeakON cable plug (Neutrik NL4) into the
connector, and turn it to the right to lock it.
(スピコンケーブルプラグ(NeutrikNL4)を差し込み、
右に回してロックします。)
• Binding post connector
• Without plugs
Remove about 15 mm of insulation from the end of each
speaker cable, pass the bare wire through the holes in the
appropriate speaker terminals, and tighten the terminals to
securely clamp the wires. Make sure that the bare wire ends do
not jut out from the terminals and touch the chassis.
(スピーカーケーブルの先端の被覆を15mm外し、端子の穴に通
して締め付けます。このとき、芯線がシャーシに当たらないよう
にしてください。)
• Y-plugs
From above, insert the Y-plugs all the way into the opening, and
tighten the terminals.
(Y型プラグを上から奥まで差し込み、締め付けます。)
(プラグなしの場合)
15 mm
(Y型プラグの場合)
(バインディングポスト端子)
1+
1–
Channel A (Aチャンネル)
Neutrik NL4
1+A+
1–A–
2+B+
2–B–
PX amplifier
(PXアンプ)
2–
2+
Channel B (Bチャンネル)
Neutrik NL4
1+B+
1–B–
2+
2–
PX amplifier
(PXアンプ)
not connected
(接続なし)
not connected
(接続なし)
0.25"
(6.3 mm)
≤0.51"
(12.9 mm)
8
CIRCUIT BOARD LAYOUT(ユニットレイアウト)
PX10/PX8/PX5/PX3
• Top view
(上から見た図)
AC INLET
(ACインレット)
OUT
AUDIO
PS
ACIN
• Front view
PSW
DC FAN
(DCファン)
(前面から見た図)
PF
VOL
DC FAN
(DCファン)
FPN
USBENC
9
PX10/PX8/PX5/PX3
DISASSEMBLY PROCEDURE(分解手順)
Caution:
• Install the binding tie and the cord clamp in the same way
as they were before removal.
• Pay attention not to insert and install the FFC cable to the
connector inversely. (Photo A)
Front Side
(表面)
Photo A
1. Top Panel (Time required: About 2 minutes)
1-1 Remove the nine (9) screws marked [1120]. The top panel
can then be removed. (Fig. 1)
* When installing the top panel, first tighten the priority
screws as shown in Fig. 1.
Priority screw (2nd)
(優先ネジ2)
注意事項
•インシュロックタイ、束線止めは、取り外す前と同じように取り
付けてください。
•FFCケーブルの表・裏を逆に差し込まないように注意して取り
付けてください。(写真A)
Back Side
(裏面)
(写真 A)
1.トップパネル
1-1[1120]のネジ 9 本を外して、トップパネルを外します。
(図1)
※ トップパネルを取り付ける際は、優先ネジを図1に示す順
で締めてください。
Priority screw (1st)
(優先ネジ1)
(所要時間:約2 分)
[1120]
TOP PANEL
(トップパネル)
Priority screw (2nd)
(優先ネジ2)
[1120]
[1120]
10
Fig. 1
(図1)
<Top view (上面)>
AC INLET
(ACインレット)
[860] [440][440]
[350]
Priority screw (2nd)
(優先ネジ2)
[520]
PX10/PX8/PX5/PX3
Priority screw (1st)
(優先ネジ1)
[340]
<Rear view (背面)>
[670]
ACIN
HEXAGONAL NUT
(六角ナット)
Priority screw (3rd)
(優先ネジ3)
CB901
Priority screw (2nd)
[520]
AUDIO
[670]
OUT
CB902
PS
(優先ネジ2)
HEXAGONAL NUT
(六角ナット)
Priority screw (3rd)
(優先ネジ3)
PF
[470A]
Priority screw (1st)
(優先ネジ1)
Priority screw (2nd)
(優先ネジ2)
[430]
AUDIO
OUT
[630]
Tighten the screws marked [330] with
holding the inlet angle.
(インレット金 具を押さえながら[330]のネジを
締めてください 。)
[640]
Priority screw (2nd)
(優先ネジ2)
[620]
Priority screw (1st)
(優先ネジ1)
[420]
Priority screw (1st)
(優先ネジ1)
Fig. 2
2.
ACIN Circuit Board (Time required: About 4 minutes)
2-1 Remove the top panel. (See procedure 1.)
2-2 Remove the cable tie marked [860]. (Fig. 2)
2-3 Remove the two (2) screws marked [330], the nine (9)
screws marked [340] and the screw marked [350]. The
ACIN circuit board can then be removed.(Fig. 2)
* When installing the ACIN circuit board, first tighten the
screws marked [330] with holding the inlet angle.
(Fig. 2)
3.
PS Circuit Board (Time required: About 6 minutes)
3-1 Remove the top panel. (See procedure 1.)
3-2 Remove the ten (10) screws marked [520]. The PS circuit
board can then be removed.(Fig. 2)
* When installing the PS circuit board, first tighten the
5-1 Remove the top panel. (See procedure 1.)
5-2 Remove the shield out. (See procedure 4-2.)
5-3 Remove the connectors of the CB901 and CB902 from
OUT circuit board. (Fig. 2)
5-4 Remove the PS circuit board. (See procedure 3.)
5-5 PX10/PX8 onlyRemove the two (2) plastic rivets marked [850]. The duct
amp can then be removed. (Fig. 4)
* When installing the duct amp, fit the tabs of duct amp
into the slots of sub chassis. (Fig. 4)
5-6 Remove the nine (9) screws marked [630]. (Fig. 2)
5-7 Remove the four (4) screws marked [620], the two (2)
screws marked [640], the two (2) hexagonal nuts, the two
(2) washers and the two (2) plastic washers marked [670].
The AUDIO circuit board can then be removed. (Fig. 2)
* When installing the AUDIO circuit board, first tighten
the priority screws as shown in Fig. 2.
* PX5/PX3 only : When installing the AUDIO circuit board,
AUDIO circuit board with bending FFC guard as shown
Fit the tabs of duct amp into the slots of sub chassis.
(ダクトAMPのタブをサブシャーシの長孔に挿し入れます。)
[850]
Fig. 4
(図4)
DUCT AMP
(ダクトAMP)
(FFCガードを曲げながらAUDIOシートを 取り付 け てください 。)
PX10/PX8/PX5/PX3
FFC GUARD
(FFCガード)
AUDIO
6. PF
Circuit Board
(Time required: About 3 minutes)
6-1 Remove the top panel. (See procedure 1.)
6-2 Remove the four (4) screws marked [470A]. The PF circuit
board can then be removed. (Fig. 2)
* When installing the PF circuit board, first tighten the
priority screws as shown in Fig. 2.
7. Front Panel Assembly
(Time required: About 4 minutes)
7-1 Remove the top panel. (See procedure 1.)
7-2 Remove the eight (8) screws marked [960]. The front
frame can then be removed. (Fig. 5)
7-3 Remove the seven (7) screws marked [940] and the knob
ENCDR. The front panel assembly can then be removed.
(Fig. 5)
* When installing the front frame and front panel
assembly, first tighten the priority screws as shown in
Fig. 5.
8. PSW
Circuit Board
(Time required: About 4 minutes)
8-1 Remove the top panel. (See procedure 1.)
8-2 Remove the front panel assembly. (See procedure 7.)
8-3 Remove the two (2) screws marked [100] and power
switch knob. The PSW circuit board can then be removed.
(Fig. 5)
* When installing the PSW circuit board, first tighten the
9-1 Remove the top panel. (See procedure 1.)
9-2 Remove the front panel assembly. (See procedure 7.)
9-3 Remove the connector of the CB103 from ACIN circuit
board. (Fig. 6)
9-4 Remove the cable tie marked [750]. (Fig. 6)
9-5 Remove the five (5) screws marked [720]. The shield
ACIN can then be removed. (Fig. 6)
* When installing the shield ACIN, first tighten the priority
screws as shown in Fig. 6.
9-6 Remove the six (6) screws marked [1020]. The right and
left rack angles can then be removed. (Fig. 6)
* When installing the rack angles, first tighten the priority
screws as shown in Fig. 6.
9-7 Remove the screw marked [470B]. (Fig. 6)
9-8 Remove the seven (7) screws marked [270]. The front
panel section can then be removed. (Fig. 6)
* When installing the front panel section, first tighten the
priority screws as shown in Fig. 6.
* When installing the front panel section, fit the claws
of side panels (L/R) into the notches of front panel
sectoin, fit the claw of front panel section into the notch
PCM1804DBR (X6872A01) ADC (Analog to Digital Converter)
18
PIN
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
V
REFL
AGNDL
V
COML
INL+
V
V
INL–
FMT0
FMT1
S/M
OSR0
OSR1
OSR2
BYPAS
DGND
DD
V
DATA/DSDR
I/OFUNCTIONNAME
-
L-channel voltage reference output,
requires capacitors for decoupling to AGND
-
Analog ground for VREFL
-
L-channel analog common-mode voltage (2.5 V)
I
L-channel analog input, positive pin
I
L-channel analog input, negative pin
I
Audio data format 0
I
Audio data format 1
I
Slave/master mode selection
I
Oversampling ratio 0
I
Oversampling ratio 1
I
Oversampling ratio 2
I
HPF bypass control
-
Digital ground
-
Digital power supply +3.3 V
O
L-channel and R-channel audio data output in PCM
mode / R-channel audio data output in DSD mode
PIN
NO.
16
BCK/DSDL
17
LRCK/DSDBCK
18
SCKI
19
RST
20
OVFR
21
OVFL
22
23
AGND
24
VINR–
25
VINR+
26
VCOMR
27
AGNDR
28
V
V
CC
REFR
I/OFUNCTIONNAME
I/O
I/O
Bit clock input/output in PCM mode /
L-channel audio data output in DSD mode
Sampling clock input/output in PCM and
DSD modes
I
System clock input
I
Reset, power-down input, active-low
O
Overflow signal of R-channel in PCM mode
O
Overflow signal of L-channel in PCM mode
-
Analog power supply +5 V
-
Analog ground
I
R-channel analog input, negative pin
I
R-channel analog input, positive pin
-
R-channel analog common-mode voltage (2.5 V)
-
Analog ground for VREFR
-
R-channel voltage reference output,
requires capacitors for decoupling to AGND
AUDIO : IC417
PX10/PX8/PX5/PX3
LPC1820FBD144, 551 (YF570B00) MCU
PIN
NO.
1
GPIO2 [0
2
ADC0_1
3
GPIO2
4
VSSIO
5
VDDIO
6
DAC
7
GPIO2
8
GPIO2 [2
9
GPIO2 [4
10
GPIO2 [5
11
GPIO2 [6
12
XTAL1
13
XTAL2
14
I2S1_TX_SCK
15
GPIO5 [12
16
USB0_VDDA3V3_DRIVER
17
USB0_VDDA3V3
18
USB0_DP
19
USB0_VSSA_TERM
20
USB0_DM
21
USB0_VBUS
22
USB0_ID
23
USB0_VSSA_REF
24
USB0_RREF
25
VDDREG
26
TDI
27
TCK
28
DBGEN
29
TRST
30
TMS
31
TDO
32
GPIO0
33
GPIO5 [13
34
I2S1_TX_SDA
35
GPIO5 [14
36
VDDIO
37
GPIO2
38
GPIO0 [4
39
GPIO2 [10
40
VSSIO
41
VDDIO
42
BOOT
43
BOOT [1
44
SSP1_MISO
45
SSP1_SCK
46
GPIO2
47
SSP1_MOSI
48
SSP1_SSEL
49
GPIO1
50
GPIO1 [10
51
GPIO1 [1
52
GPIO1 [2
53
GPIO1 [3
54
GPIO2 [12
55
GPIO1 [4
56
GPIO1 [5
57
GPIO2 [13
58
GPIO2 [14
59
VDDREG
60
GPIO1
61
GPIO1 [7
62
GPIO0 [2
63
GPIO2 [15
64
GPIO0 [3
65
GPIO2 [7
66
GPIO0 [12
67
GPIO0 [13
68
CLKOUT
69
GPIO5
70
GPIO0 [15
71
VDDIO
72
GPIO4
[1]
[3]
[0]
[9]
[0]
[11]
[9]
[6]
[18]
[11]
I/OFUNCTIONNAME
]
I/O
General purpose digital input/output pin
I
ADC input channel 1
I/O
General purpose digital input/output pin
-
Ground
-
I/O power supply +3.3 V
I
ADC input channel 0
I/O
]
I/O
]
I/O
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
]
General purpose digital input/output pin
I/O
I/O
Input to the oscillator circuit and internal clock generator circuits
I
Output from the oscillator amplifier
O
Transmit Clock
I/O
General purpose digital input/output pin
I/O
Separate analog 3.3 V power supply for driver
USB 3.3 V separate power supply voltage
USB0 bidirectional D+ line
I/O
Dedicated analog ground for clean reference for termination resistors
USB0 bidirectional D- line
I/O
VBUS pin (power on USB cable)
I/O
Indicates to the transceiver whether connected as an
I
A-device (USB0_ID LOW) or B-device (USB0_ID HIGH)
Dedicated clean analog ground for generation of reference currents and voltages
-
12.0 kΩ (accuracy 1 %) on-board resistor to ground for current reference
Main regulator power supply +3.3 V
Test Data In for JTAG interface
I
Test Clock for JTAG interface
I
JTAG interface control signal
I
Test Reset for JTAG interface
I
Test Mode Select for JTAG interface
I
Test Data Out for JTAG interface
O
I/O
General purpose digital input/output pin
I/O
2
I
S1 transmit data
I/O
General purpose digital input/output pin
I/O
I/O power supply +3.3 V
-
I/O
General purpose digital input/output pin
I/O
I/O
Ground
I/O power supply +3.3 V
-
I/O
Boot pin
I/O
Master In Slave Out for SSP1
I/O
Serial clock for SSP1
I/O
General purpose digital input/output pin
I/O
Master Out Slave in for SSP1
I/O
Slave Select for SSP1
I/O
I/O
I/O
I/O
I/O
I/O
General purpose digital input/output pin
I/O
I/O
I/O
I/O
I/O
Main regulator power supply +3.3 V
-
I/O
I/O
I/O
I/O
General purpose digital input/output pin
I/O
I/O
I/O
I/O
Clock output pin
O
I/O
General purpose digital input/output pin
I/O
I/O power supply +3.3 V
General purpose digital input/output pin
I/O
(Microcontroller Unit)
PIN
NO.
73
I
2S0_RX_MCLK
74
I2S0_RX_WS
75
76
77
78
I2S0_RX_SDA
79
80
81
82
83
84
85
GPIO5 [15
86
GPIO5 [16
87
I2C1_SDA
88
89
90
91
92
93
I2C0_SDA
94
95
96
97
98
99
I2S0_TX_MCLK
100
101
102
103
104
GPIO0 [14
105
GPIO1 [11
106
GPIO1 [12
107
108
GPIO1
109
110
111
112
I2S0_TX_SCK
113
114
I2S0_TX_WS
115
GPIO3
116
I2S0_TX_SDA
117
GPIO3 [11
118
SPIFI_SCK
119
SPIFI_SIO3
120
TRACECLK
121
SPIFI_SIO2
122
SPIFI_MISO
123
SPIFI_MOSI
124
125
126
127
128
129
RTC_ALARM
130
WAKEUP0
131
132
TRACEDATA [0
133
TRACEDATA [1
134
TRACEDATA [2
135
136
137
138
139
140
TRACEDATA [3
141
142
143
144
U0_TXD
VSSIO
VDDIO
GPIO3 [2
GPIO3 [3
U0_RXD
GPIO3
GPIO0 [5
GPIO5 [2
I2C1_SCL
N.C.
N.C.
GPIO5
I2C0_SCL
VDDREG
GPIO5
GPIO0 [7
GPIO3 [5
BOOT [2
GPIO3 [6
GPIO3 [7
BOOT [3
GPIO2 [8
VDDIO
VSSIO
GPIO3
VDDIO
GPIO3 [9
SPIFI_CS
RTCX1
RTCX2
VBAT
RESET
VDDREG
VSSA
ADC0_7
VDDA
ADC0_4
ADC0_3
VDDIO
ADC0_6
ADC0_2
ADC0_5
[4]
[5]
[6]
[13]
[8]
[10]
I/OFUNCTIONNAME
O
I/O
O
-
-
I/O
]
I/O
]
I/O
I
I/O
]
I/O
]
I/O
]
I/O
]
I/O
I/O
I/O
-
I/O
I/O
I/O
I/O
]
I/O
]
I/O
]
-
O
]
I/O
]
I/O
]
I/O
]
I/O
]
I/O
]
I/O
]
I/O
I/O
I/O
I/O
]
I/O
I/O
I/O
I/O
]
I/O
O
I/O
O
I/O
I/O
I/O
I/O
I
O
I
O
I
-
]
O
]
O
]
O
I
I
I
]
O
I
I
I
FPN (PN) : IC103
2
S receive master clock
I
Receive Word Select
Transmitter output for USART0
Ground
I/O power supply +3.3 V
2
S Receive data
I
General purpose digital input/output pin
Receiver input for USART0
General purpose digital input/output pin
2
C1 data input/output
I
2
C1 clock input/output
I
Not connected
General purpose digital input/output pin
2
C clock input/output
I
2
C data input/output
I
Main regulator power supply +3.3 V
General purpose digital input/output pin
Boot pin
2
S transmit master clock
I
General purpose digital input/output pin
Boot pin
General purpose digital input/output pin
I/O power supply +3.3 V
General purpose digital input/output pin
Ground
General purpose digital input/output pin
I/O power supply +3.3 V
Transmit Clock
General purpose digital input/output pin
Transmit Word Select
General purpose digital input/output pin
2
S transmit data
I
General purpose digital input/output pin
Serial clock for SPIFI
I/O lane 3 for SPIFI
Trace clock
I/O lane 2 for SPIFI
Input 1 in SPIFI quad mode; SPIFI output IO1
Input 0 in SPIFI quad mode; SPIFI output IO0
SPIFI serial flash chip select
Input to the RTC 32 kHz ultra-low power oscillator circuit
Output from the RTC 32 kHz ultra-low power oscillator circuit
RTC power supply: 3.3 V on this pin supplies power to the RTC
External reset input
RTC controlled output
External wake-up input
Main regulator power supply +3.3 V
Trace data, bit 0
Trace data, bit 1
Trace data, bit 2
Analog ground
ADC input channel 7
Analog power supply +3.3 V and ADC reference voltage
ADC input channel 4
ADC input channel 3
Trace data, bit 3
I/O power supply +3.3 V
ADC input channel 6
ADC input channel 2
ADC input channel 5
19
PX10/PX8/PX5/PX3
YSS952-QZE2A (YE441A00) DSP (SPR-2) (Digital Signal Processor)
PIN
NO.
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
GPIO5
GPIO4
GPIO3
DVSS
GPIO2
GPIO1
GPIO0
PLLVDD
IC_N
PLLVSS
PLLVSS
XIN
XOUT
IOVDD
SCL
SDA
I/OFUNCTIONNAME
I/O
I/O
General-purpose I/O pins
I/O
-
GND
I
I
General-purpose I/O pins
I
-
PLL power supply
I
Hardware reset pin
-
PLL GND
I
Clock input pin
O
Clock output pin
-
Control interface power supply
2
C control bus clock input pin
I
I
2
C control bus data I/O pin
I
I/O
PIN
NO.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
OPEN
DVSS
IRQ_N
DVDD18
GPIO11
TESTb
DVSS
OPEN
DVSS
GPIO10
GPIO9
GPIO8
IOVDD
GPI07
DVDD18
GPI06
I/OFUNCTIONNAME
-
Leave this pin open
-
GND
O
Interrupt request output pin to the host controller
[A] keyselect before categoryselect before itemdisplay result before page
Switch
[B] keyselect next categoryselect next itemdisplay result next page
Main knobfi x category (display item)execute itemselect next item
Main knob Leftselect before categoryselect before itemdisplay result before page
Encoder
Main knob Rightselect next categoryselect next itemdisplay result next page
Left end✽is a selecting cursor.
The automatic paging is supported.
33
PX10/PX8/PX5/PX3
5. Inspection item
5-1. USB
5-1-1. USB Bus, USB0-ID
Contents The state of FAT32 fi le system currently recorded on
the USB memory is inspected.
Advance preparation
Confi rm the USB memory is inserted.
Service inspection screen
〈
〉
5-2. Information
5-2-1. Firmware version
Contents A version number inspects visual agreement.
Advance preparationNone.
Service inspection screen
〈
Inspect visually.
The fault location at the time of FAIL
Firmware is not upgraded correctly.
〉
The fault location at the time of FAIL
USB Bus (USB-DP, USB-DN, VBUS-EN, IC301, IC302),
USB0-ID
5-1-2. VBUS (PCB PN Assembly only)
This is not tested for service inspection of PX amplifi er.
5-1-3. /VBUS-FLG (PCB PN Assembly only)
This is not tested for service inspection of PX amplifi er.
5-2-2. SERIES-ID
Contents An SERIES-ID (from PCB PN) inspects visual
agreement.
Advance preparationNone.
Service inspection screen
〈
Inspect visually that it was displayed as “PX”.
The fault location at the time of FAIL
SERIES-ID0, SERIES-ID1, SERIES-ID2
〉
34
PX10/PX8/PX5/PX3
5-2-3. AUDIO-ID
Contents An AUDIO-ID inspects automatically that it is in
agreement with an expected value.
Advance preparationNone.
Service inspection screen
〈
Inspect visually agreeing with the model name printed at the
panel.
The fault location at the time of FAIL
The classifi cation of PCB AUDIO connected is different.
Or, the circuit of the AUDIO-ID circumference is fault.
〉
5-2-6. PS-ID0 Variable (PCB PN Assembly only)
This is not tested for service inspection of PX amplifi er.
5-2-7. PS-ID1
Contents An PS-ID1(from PCB PS) inspects visually agreeing
with the destination of a PX amplifi er.
Advance preparationNone.
Service inspection screen
〈
Inspect visually agreeing with the destination of a PX amplifi er
using the following chart.
〉
5-2-4. AUDIO-ID Variable (PCB PN Assembly only)
This is not tested for service inspection of PX amplifi er.
5-2-5. PS-ID0
Contents An PS-ID0 (from PCB PS) inspects visually agreeing
with the model name printed at the panel.
Advance preparationNone.
Service inspection screen
〈
Inspect visually agreeing with the model name printed at the
panel.
〉
PS-ID1destination
European model
British model
E
Korean model
Chinese model
U.S.A. model
U
Taiwan model
Brazilian model
JJapanese model
The fault location at the time of FAIL
The classifi cation of PCB PS connected is different.
Or, the circuit of the PS-ID1 circumference is fault.
5-2-8. PS-ID1 Variable (PCB PN Assembly only)
This is not tested for service inspection of PX amplifi er.
The fault location at the time of FAIL
The classifi cation of PCB PS connected is different.
Or, the circuit of the PS-ID0 circumference is fault.
35
PX10/PX8/PX5/PX3
5-3. Statistics (Service only)
5-3-1. Browsing
Contents The operating condition statistic of amplifier is
inspected visually.
Refer to Statistics list.
Statistics list
ParameterMeaning
Power ONThe number of times of turn on the power.
EncoderThe number of times of rotation.Yes
Attenuator-A The number of times of rotation.Yes
Attenuator-B The number of times of rotation.Yes
Data Broken
/PS-HI-TEMP The number of /PS-HI-TEMP.Yes
Over Current
Low Temp
Low Mid Temp
High Mid Temp
High Temp
Total OpThe operation total number of seconds.
Long Op
FlickerThe number of power fl icker counts.
Run AwayThe number of run away counts.
The number of times of detecting data corruption.
The number of times that the excessive output exceeded the threshold.
The number of times of being a low temperature per unit time.
The number of times of being a lower-middle temperature per unit time.
The number of times of being a higher-middle temperature per unit time.
The number of times of being a high temperature per unit time.
The number of times that hours operated were 24 hours or more.
Clear Object
5-3-2. Clear
Contents After exchanging the following parts, a related
statistic is cleared manually.
Exchanged partsItem to clear
SW301 Rotary encoderThe number of times of rotation
VR301 Rotary potentiometerThe number of times of rotation
VR302 Rotary potentiometerThe number of times of rotation
PCB PSThe number of /PS-HI-TEMP
Advance preparationNone.
Note Don't clear accidentally.
Service inspection screen
〈
〉
Advance preparationNone.
Service inspection screen
〈
〉
Left end✽is a selecting cursor.
Left end✽is a selecting cursor.
Rotate the Main knob, confi rm the all parameters.
<Attention>
The purpose of this inspection is to obtain the hint of a fault cause.
This inspection does not pinpoint a fault location.
36
5-4. DP200 (IC601)
5-4-1. I2C Bus
Contents Via I2C Bus which is a communication path with a
microcomputer, it inspects automatically using the
register of DP200.
Advance preparationNone.
Service inspection screen
〈
〉
PX10/PX8/PX5/PX3
5-4-4. V-SENSE (OUTVA,OUTVB)
Contents When the output voltage of amplifier without load
is normal, it inspects automatically that the value
of the OUTVA or OUTVB register of DP200 is
judgment within the range.
Advance preparation
1. Connect 8 ohms load resistances for PX amplifi er output
terminals.
2. Input 1kHz sine wave signal to PX amplifi er.
3. Adjust amplifi er outputs to 250W@8Ω.
Service inspection screen
〈
〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
I2C Bus(SCL-DP2, SCA-DP2)
5-4-2. OCPA Flag PROTA_N
This is not tested for service inspection of PX amplifi er.
5-4-3. OCPB Flag PROTB_N
This is not tested for service inspection of PX amplifi er.
Left end✽is a selecting cursor.
The fault location at the time of FAIL
VSENSEA, VSENSEB
37
PX10/PX8/PX5/PX3
5-4-5. I-SENSE
Contents When the output current of amplifier with rated
Advance preparation
1. Connect 8 ohms load resistances for PX amplifi er output
terminals.
2. Input 1kHz sine wave signal to PX amplifi er.
3. Adjust amplifi er outputs to 250W@8Ω.
Service inspection screen
〈
(OUTIA,OUTIB)
load is normal, it inspects automatically that the
value of the OUTIA or OUTIB register of DP200 is
judgment within the range. Refer to the following
specifi cations about the normal current.
〉
5-4-9. /CLIP-B OFF
This is not tested for service inspection of PX amplifi er.
5-4-10. V-SENSE,I-SENSE Calibration
Contents This inspection is divided into every A and B, and is
performed.
When the output voltage of amplifier without load
and the output current of amplifier with rated load
are normal , the calibration of the value of the
OUTVx and OUTIx registers of DP200 are carried
out simultaneously, and each correction value is
calculated automatically. The each correction value
is saved as in the fl ash memory.
(x = A or B)
Advance preparation
1. Connect 8 ohms load resistances for PX amplifi er output
terminals.
2. Input 1kHz sine wave signal to PX amplifi er.
3. Adjust amplifi er outputs to 250W@8Ω.
Service inspection screen
〈
〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
ISENSEA, ISENSEB
5-4-6. /CLIP-A ON
This is not tested for service inspection of PX amplifi er.
5-4-7. /CLIP-A OFF
This is not tested for service inspection of PX amplifi er.
Left end✽is a selecting cursor.
The fault location at the time of FAIL
VSENSEA, VSENSEB, ISENSEA, ISENSEB
5-4-8. /CLIP-B ON
This is not tested for service inspection of PX amplifi er.
38
PX10/PX8/PX5/PX3
5-5. Temperature
5-5-1. AMP-A (OTP_PS Flag PROT*_N)
This is not tested for service inspection of PX amplifi er.
5-5-2. AMP-B (T-SENSE)
Contents T-SENSE which is a signal which the temperature
sensor of the amplifier channel B outputs inspects
automatically whether it is in the right range.
Normal range is 240mV (5℃) - 1010mV (50℃).
Advance preparationNone.
Service inspection screen
〈
〉
5-6. SPI Flash(IC104)
5-6-1. SPI Bus
Contents Read JEDEC ID (9Fh) command is written to the
SPI Flash device for data (IC104), and it inspects
automatically that the following ID can be read.
Memory Type:40h
Capacity:14h
Advance preparationNone.
Note The inspection of the QSPI Flash device for firmware
(IC102) is omitted.
It is substituted by the check of operation of firmware
and the check of the validity at the time of firmware
upgrade.
Service inspection screen
〈
〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
Around T-SENSE signal.
5-5-3. /HI-TEMP
This is not tested for service inspection of PX amplifi er.
Left end✽is a selecting cursor.
The fault location at the time of FAIL
SPI Bus (/FLA-CS, FLA-SCK, FLA-MISO, FLA-MOSI) or
IC104 itself.
39
PX10/PX8/PX5/PX3
5-7. DSP(IC104)
5-7-1. I2C Bus
Contents Via I2C Bus which is a communication path with a
microcomputer, it inspects automatically using the
register of DSP.
Advance preparationNone.
Service inspection screen
〈
〉
5-7-2. /DSP-IRQ
Contents The function to assert a /DSP-IRQ signal is
automatically inspected via the register of DSP.
Advance preparationNone.
Service inspection screen
〈
〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
I2C Bus (SCL-SPR, SCA-SPR)
Left end✽is a selecting cursor.
The fault location at the time of FAIL
/DSP-IRQ
40
5-7-3. DSP-STATUS
Contents The function to monitor a DSP-STATUS signal is
automatically inspected via the register of DSP.
Advance preparationNone.
Service inspection screen
〈
〉
PX10/PX8/PX5/PX3
5-8. Analog
5-8-1. /CFG1 (+14dBu)
Contents Measure the output characteristic of ChA/ChB on
condition of the following.
PX10PX8PX5PX3
Input Sensitivity+14dBu
DP200 E-VOL0dB0dB-2dB-3dB
NJW1194 E-VOL+6dB
Peak LimiterOFF
1/8 Power LimiterOFF
CLIP LimiterOFF
AMP Prot Gain0dB
SlicerOFF
Regarding criteria for measurement, refer to “2-2. inspection”
(Page 54) of MEASUREMENT section.
Left end✽is a selecting cursor.
The fault location at the time of FAIL
DSP-STATUS
Advance preparationNone.
Service inspection screen
〈
〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
Around DP200 (IC601) or NJW1194 (IC422)
41
PX10/PX8/PX5/PX3
5-8-2. CFG2 (+4dBu)
Contents Measure the output characteristic of ChA/ChB on
condition of the following.
PX10PX8PX5PX3
Input Sensitivity+4dBu
DP200 E-VOL0dB0dB-2dB-3dB
NJW1194 E-VOL+16dB
Peak LimiterOFF
1/8 Power LimiterOFF
CLIP LimiterOFF
AMP Prot Gain0dB
SlicerOFF
Regarding criteria for measurement, refer to “2-2. inspection”
(Page 54) of MEASUREMENT section.
Advance preparationNone.
Service inspection screen
〈
〉
5-8-3. CFG3 (Minimum volume)
Contents Measure the output characteristic of ChA/ChB on
condition of the following.
PX10PX8PX5PX3
Input Sensitivity+14dBu
DP200 E-VOLMUTE
NJW1194 E-VOL-4dB
Peak LimiterOFF
1/8 Power LimiterOFF
CLIP LimiterOFF
AMP Prot Gain0dB
SlicerOFF
Regarding criteria for measurement, refer to “2-2. inspection”
(Page 54) of MEASUREMENT section.
Advance preparationNone.
Service inspection screen
〈
〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
Around DP200 (IC601) or NJW1194 (IC422)
42
Left end✽is a selecting cursor.
The fault location at the time of FAIL
Around DP200 (IC601) or NJW1194 (IC422)
PX10/PX8/PX5/PX3
5-8-4. CFG4 (Boost mode)
Contents Measure the output characteristic of ChA/ChB on
condition of the following.
PX10PX8PX5PX3
Input Sensitivity+14dBu
DP200 E-VOL
NJW1194 E-VOL+6dB
Peak LimiterOFF
1/8 Power LimiterOFF
CLIP LimiterOFF
AMP Prot Gain0dB
SlicerOFF
※/ AMP MUTE B signal only assert.
Regarding criteria for measurement, refer to “2-2. inspection”
(Page 54) of MEASUREMENT section.
Advance preparation
Prepare the jig for measuring an output characteristic.
Service inspection screen
〈
------
〉
0dB0dB
5-8-5. /DSP-MUTE ON
Contents Measure the output level in the state where the
/DSP-MUTE signal was asserted.
Regarding criteria for measurement, refer to “2-2. inspection”
(Page 54) of MEASUREMENT section.
Advance preparation
Prepare the jig for measuring an output characteristic.
Note The characteristic of DSP is a fl at.
Service inspection screen
〈
〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
Around DP200 (IC601) or NJW1194 (IC422)
Left end✽is a selecting cursor.
The fault location at the time of FAIL
Around /DSP-MUTE signal.
43
PX10/PX8/PX5/PX3
5-8-6. /DSP-MUTE OFF
Contents Measure the output level in the state where the
/DSP-MUTE signal was negated.
Regarding criteria for measurement, refer to “2-2. inspection”
(Page 54) of MEASUREMENT section.
Advance preparation
Prepare the jig for measuring an output level.
Note The characteristic of DSP is a fl at.
5-9. LCD
5-9-1. Parallel Bus
Contents A parallel bus is automatically inspected by writing,
reading, comparing with the LCDC display data
RAM in the LCD module on the following two
conditions.
(1)(2)
Page address2h5h
Column address H8h8h
Column address L0h
Data55h
3h
AAh
Service inspection screen
〈
Left end✽is a selecting cursor.
〉
Advance preparationNone.
Note In order that comparison may use RAM besides a
viewing area, this inspection does not affect display
information.
Service inspection screen
〈
Left end✽is a selecting cursor.
〉
The fault location at the time of FAIL
Around /DSP-MUTE signal.
44
The fault location at the time of FAIL
Parallel Bus (/LCD-CS1, /LCD-RST, /LCD-RD, /LCD-WR,
LCD-A0 ~ LCD-A7) or the LCD module itself.
Contents According to directions of a screen, a semiautomatic
inspection is conducted by pushing fi ve switches in
following order.
It is failure, when the switch which should be pushed
on the next is not displayed after pushing a switch, or
when the switch which should be pushed on the next is
displayed, although a switch is not pushed.
Contents A semiautomatic inspection is conducted by turning
a rotary encoder to the three lefts (counterclockwise
rotation).
When a rotating left cannot be detected, it judges
with it being failure.
PX10/PX8/PX5/PX3
5-13-2. Rotate Left
Contents A semiautomatic inspection is conducted by turning
a rotary encoder to the three rights (clockwise
rotation).
When a rotating right cannot be detected, it judges
with it being failure.
Advance preparationNone.
Service inspection screen
〈
Left end✽is a selecting cursor.
〉
Advance preparationNone.
Service inspection screen
〈
Left end✽is a selecting cursor.
〉
The fault location at the time of FAIL
ENC-A, ENC-B
SW301
The fault location at the time of FAIL
ENC-A, ENC-B
SW301
49
PX10/PX8/PX5/PX3
5-14. Rotary potentiometer
5-14-1. VOL-ALT positive
This is not tested for service inspection of PX amplifi er.
5-14-2.VOL-ALT negative
This is not tested for service inspection of PX amplifi er.
5-14-3.Calibration 2
Contents The voltage for every click of all rotary potentiometer
with large variation is acquired.
Advance preparation
The index of both rotary potentiometer A/B is adjusted in the
maximum position.
3) If SIGNAL LED of both A/B lights up, it means that voltage
acquisition of this position was completed.
2) 3) is repeated in order to acquire the voltage of the next click position.
4) It will end, if the index of a variable resister arrives at the
minimum position.
An end can be checked because SIGNAL LED lights down.
1) A start of execution will light up SIGNAL LED of both A/B.
SIGNAL LED means “permitting rotation”.
2) The rotary potentiometer of both A/B is turned to the left
(1 click, counterclockwise rotation).
CLIP/LIMIT LED of both A/B lights up.
CLIP/LIMIT LED means “under voltage acquisition”,
“prohibiting rotation”.
Don't rotate the rotary potentiometer.
Note If you have turned 2 or more clicks at once, at this time,
an error will not be displayed but will be ended normally.
(an error will display in 5-14-4. Confi rm & Save 2.)
If there is consciousness that you have turned 2 or more clicks at
once, you should retry operation independently
When retry operation, the [BACK] switch is pushed and canceled
once again. And it returns to a maximum position and retry
from 1).
50
When a [BACK] switch is pushed:
When it returns to a maximum position:
The voltage value for every click is not saved within this
inspection, only held temporarily.
The voltage value is collectively saved in 5-14-4. Confi rm & Save 2.
If it does not end even if you turn correctly, it will be failure of a
rotary potentiometer.
PX10/PX8/PX5/PX3
The fault location at the time of FAIL
VR301, VR302
5-14-4.Confirm & Save 2
Contents In “5-14-3. Calibration 2”, it is inspected semi-
automatically whether the voltage value read for
every click is right.
If the voltage value for every click is right, it saves
in the fl ash memory.
Advance preparation
“5-14-3. Calibration 2” had been fi nished.
The index of the rotary potentiometer of both A/B is aligned
with the maximum position as follows.
Service inspection screen
〈
Left end✽is a selecting cursor.
〉
1) If the voltage value for every click is right, a start of execution
will light up SIGNAL LED of both A/B.
SIGNAL LED means “permitting rotation”.
51
PX10/PX8/PX5/PX3
2) The index of the rotary potentiometer of both A/B is aligned
with the minimum position as follows.
It will end, if the both SIGNAL LED lights up.
The voltage value for every click saves in the fl ash memory.
Service inspection screen
〈
〉
5-15 Power off
Contents Inspect the shutdown of the power supply when
POFF-REQ is activated.
At this time, it also checks that /PWR-OFF occurs
automatically.
Advance preparationNone.
Note In Final Assy or Service inspection, A power supply is
shut down while the power switch has been an ON state.
You need to turn off a power switch manually, after
ending an inspection visually.
It is set to “FAIL” when there is no response, even if
PWR-OFF becomes temporary standard time.
Service inspection screen
〈
〉
Left end✽is a selecting cursor.
The fault location at the time of FAIL
Around /POFF-REQ, POFF-REQ.
The fault location at the time of FAIL
This is not failure. This cause was not successful when you
performed calibration.
It is necessary to retry “5-14-3. Calibration 2”.
52
MEASUREMENT
1. Measurement condition
PX10/PX8/PX5/PX3
1-1. Environment
Normal temperature: 5 to 40 degrees
Normal humidity: 30 to 90%
Note) [the following measurement conditions are
permitted if measurement result is in the inspection
standard. (Temperature: 5 to 40 degrees, Humidity: 20
to 90%) But measure it again at the normal temperature
and normal humidity when it varies from the inspecting
standard.]
1-2. Power Source
DestinationVoltageFrequency
J100V +2/-0%50Hz
U/T/BRA120V +2/-0%60Hz
E/B/K/CHN230V +2/-0%50Hz
1-3. Measuring instruments
The measuring instruments shall have enough accuracy
and precision to measure the specifications of each
characteristic to be inspected.
The input impedance of the measuring instruments shall be
100kohms or more.
Use the measuring instrument that can measure the
specifi cation value described in this specifi cation.
1-4. Caution for measurement environment
Connected chart when classD amplifi er (PX amplifi er) is
measure
Insert AUX-0025 between classD amplifi er and the audio
analyzer when you measure classD amplifi er.
1-3-1. Input terminals
The XLR and PHONE-JACK are used to connect input
signals. It shall be a balanced input.
A XLR terminal performs measurement without
directions.
1-3-2. Output terminals
The SPEAKON, PHONE-JACK and 5WAY terminal are
used to connect output loads.
A SPEAKON terminal performs measurement without
directions.
1-3-3. Filter for measurement
Use AUX-0025 Filter for the measurement of 2-2-1. Gain
to 2-2-14. Maximum Output (BOOST Mode).
Use the low-pass filter of 20kHz according to the
measurement item.
1-3-4. Connection
Refer to the “1-2. How to connect” (Page 32) of INSPECTION
section.
Reason why insertion of AUX-0025 is indispensable
The high frequency noise caused by the switching drive is
included in the output signal of classD amplifi er.
However, the audio analyzer doesn't generally assume
the high frequency. In a word, there is no tolerance to the
high frequency.
Therefore, there is a possibility that the audio analyzer
doesn't operate normally when the high frequency is not
removed with AUX-0025.
The reason to recommend the above-mentioned
connection method
Figure 2 is the block diagram of the output composition
of the PX amplifi er.
The output of classD amplifi er is not necessarily limited
the shingle-end output.
Moreover, it is possible to understand that reversing of the
phase by HOT and COLD from the block diagram.
The output method of a recent classD amplifier takes
various forms like this.
53
PX10/PX8/PX5/PX3
Therefore, the connection method with the interchangeability
that can correspond to any amplifier output method is
preferable. The above-mentioned connection
method can be compatible for the amplifier output with
the single end output and the bridge output, and apply any
audio analyzer.
Please shorten between the amplifi er to be measured and
the analyzer to suppress the infl uence of turbulence and
connect it. Moreover, please make to fl oatingwithout fail for the output.
(One on the load side is not grounded. When monitoring
with the oscilloscope, it does based on the chassis
playground. )
2. Electric characteristics
2-1. Preparation
2-1-1. Load resistances
The load resistances for each output terminals are as follows.
8Ω MODE:8ohms±1% (Rated 750W or more)
2Ω MODE:2ohms±1% (Rated 250W or more)
FlowofsignalandoutputmethodofPXamplifier
〈Fig. 2〉
In PX amplifi er, the type of output is the BTL fi xation. (Fig. 2)
2-1-2. Input Signal
Unless otherwise specifi ed, the input signal should be 1kHz sine wave.The input signal impedance should be 100〜150 ohms.
0dBu is referenced to 0.775Vrms.
2-2. Inspection
2-2-1. Gain
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
The sine wave of 1kHz -6dBu is input to the input terminal,
and the output level of SP OUT is measured.
Select “Analog > CFG2(+4dBu)” with Service inspection mode.
Measured mode/8Ω MODE
The sine wave of 1Hz -6dBu is input to the input terminal,
and the output level of SP OUT is measured.
All channel
PX1021.3dBu ± 2dB
PX820.3dBu ± 2dB
PX518.3dBu ± 2dB
PX316.1dBu ± 2dB
Between channel
± 2dB
All channel
PX1031.3dBu ± 2dB
PX830.3dBu ± 2dB
PX528.3dBu ± 2dB
PX326.1dBu ± 2dB
Between channel
± 2dB
54
2-2-2. Frequency Response
Measurement conditionCriteria
PX10/PX8/PX5/PX3
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
The sine wave of 1kHz, -11dBu is input to the input terminal,
and the output level of SP OUT is measured.
The sine wave of 20Hz, -11dBu is input to the input terminal,
and the output level of SP OUT is measured.
The sine wave of 20kHz -11dBu is input to the input terminal,
and the output level of SP OUT is measured.
2-2-3. Total Harmonics Distortion
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
When the sine wave of 1kHz is input to the input terminal, and the following
table outputs are obtained, total harmonics distortion is measured.
PX10 500W 38.3dBu ② PX10 10W 21.3dBu
①
PX8 400W 37.3dBu PX8 10W 21.3dBu
PX5 250W 35.3dBu PX5 10W 21.3dBu
PX3 150W 33.0dBu PX3 10W 21.3dBu
(half power) (10W)
Measurements are recorded as (A1).
The range of 0±1dB based on A1.
The range of 0±1dB based on A1.
All channel
THD=0.3% or less.
①
THD=0.1% or less.
②
※Use the low-pass fi lter of 20kHz for the measurement.
※Drive all channels.
2-2-4. Residual noise level
Measurement conditionCriteria
Select “Analog > CFG3(E-VolMute)” with Service inspection mode.
Measured mode/8Ω MODE
The inputs of both Ach/Bch are terminated by 100〜150ohm resistor.
※Use the low-pass fi lter of 20kHz for the measurement.
All channel
PX10-58dBu or less
PX8-58dBu or less
PX5-58dBu or less
PX3-59dBu or less
55
PX10/PX8/PX5/PX3
2-2-5. DSP-MUTE noise level
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
The signal of -10dBu is input to input terminal.
Select “Analog > DSP-MUTE ON ” with Service inspection mode.
※Use the low-pass fi lter of 20kHz for the measurement.
※Item /DSP-MUTE OFF is executed, after ending an inspection.
2-2-6. Output noise level
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
The inputs of both Ach/Bch are terminated by 100〜150ohm resistor.
※Use the low-pass fi lter of 20kHz for the measurement.
2-2-7. Crosstalk
All channel
PX10-52dBu or less
PX8-53dBu or less
PX5-54dBu or less
PX3-55dBu or less
All channel
PX10-54dBu or less
PX8-55dBu or less
PX5-56dBu or less
PX3-57dBu or less
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
1kHz signal applied to Ach input terminal and adjust the signal level the Ach output
level is to be as below. And Bch input terminal shall be terminated with 100
150ohm resistor. Measure the voltage of Bch output terminal.
PX10500W38.3dBu
PX8400W37.3dBu
PX5250W35.3dBu
PX3150W33.0dBu
※Use the low-pass fi lter of 20kHz for the measurement.
All channel
PX10-21.7dBu or less
PX8-22.7dBu or less
PX5-24.7dBu or less
PX3-27.0dBu or less
〜
56
2-2-8. DP200 V-SENSE,I-SENSE Calibration
Measurement conditionCriteria
PX10/PX8/PX5/PX3
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
Amplifi er outputs are adjusted to 250W@8Ω
Select “Analog > DP200 > V&I Calib-A, DP200 > V&I Calib-B” with Service
inspection mode.
※ Drive each channel.
2-2-9. Confirmation of DP200 V-SENSE
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
Amplifi er outputs are adjusted to 250W@8Ω
Select “Analog > DP200 > V-SENSE-A, DP200 > V-SENSE-B” with Service
inspection mode.
※Drive each channel.
The test program judge ‘PASS’ or ‘FAIL’ automatically.
When the calibration is completed successfully, it is
※
outputted as PASS.
The test program judge ‘PASS’ or ‘FAIL’ automatically.
2-2-10. Confirmation of DP200 I-SENSE
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
Amplifi er outputs are adjusted to 250W@8Ω
Select “Analog > DP200 > I-SENSE-A, DP200 > I-SENSE-B” with Service
inspection mode.
※Drive each channel.
2-2-11. Maximum Output 1 (STEREO Mode
) (
8Ω Mode /All channels drive
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
Refer to the “Setups at the time of maximum output measurement”(Page 59).
The test program judge ‘PASS’ or ‘FAIL’ automatically.
)
All channel
PX10More than 243Vp-p
PX8More than 227Vp-p
PX5More than 179Vp-p
PX3More than 139Vp-p
※Drive all channels.
57
PX10/PX8/PX5/PX3
2-2-12. Maximum Output (STEREO Mode
) (
8Ω Mode/1 channel drive
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/8Ω MODE
Refer to the “Setups at the time of maximum output measurement”(Page 59).
※Driveeachchannel.
2-2-13. Maximum Output (STEREO Mode
) (
2Ω Mode/1 channel drive
Measurement conditionCriteria
Select “Analog > CFG1(+14dBu)” with Service inspection mode.
Measured mode/2Ω MODE
Refer to the “Setups at the time of maximum output measurement”(Page 59).
)
All channel
PX10More than 253Vp-p
PX8More than 227Vp-p
PX5More than 179Vp-p
PX3More than 139Vp-p
)
All channel
PX10More than 105.9Vp-p
PX8More than 98.0Vp-p
PX5More than 89.5Vp-p
PX3More than 69.3Vp-p
※Driveeachchannel.
2-2-14. Maximum Output (BOOST Mode
) <
PX5, PX3 only
Measurement conditionCriteria
Select “Analog > CFG4(BoostMode)” with Service inspection mode.
Measured mode/8Ω MODE
Refer to the “Setups at the time of maximum output measurement”(Page 59).
>
A channel only
PX5More than 226.3Vp-p
PX3More than 196.0Vp-p
58
PX10/PX8/PX5/PX3
Setups at the time of maximum output measurement
This item shall be tested with each measurement condition load resistances for each output terminals.
The burst signal described in the following fi gure is applied to each input terminals.
The peak-to-peak voltage of the last one wave of output burst signal (Vburst) should become a judgment value of a criterion.
When the shape of waves is read with an oscilloscope, the center of the emission line shall be adopted as the measurement value.
Each channel shall be tested at alone.
500mSec
Vburst
1mSec
Close-up
20mSec
The center of the emission line shall
be adopted as the measurement value.
The last one wave of burst signal
shall be measured.
Siganal
Cursor
(
Reference
)
This item is to test the output ability of the power amplifi er. Please calculate from the gain of each channel and set an appropriate input
level.
In consideration of the accuracy of the signal generator and the measuring instrument, an input level that is about 0.5% higher than the
level with which the output of the lowest judgment value is expected is recommended.
3. Settings after the inspection has done
•Rotary potentiometers are adjusted the left end.
1) Turn off the power supply of PX amplifi er. (Or check that PX amplifi er is a power OFF state.)
2) USB memory in PX amplifi er.
3) Turn on the power supply of PX amplifi er.
4) LCD is displayed as follows.
1-4. Attention
You must not turn off the power supply of PX amplifier
until update is completed.
When you turn on the power supply of PX amplifier on
condition of the following, it does not change in update
mode.
At this time, PX amplifi er is started by the normal mode.
(An error is not displayed at this time.)
• The USB memory is not inserted in PX amplifi er.
• The USB memory has broken.
• The USB memory is not formatted in FAT32 or FAT16.
• In a USB memory, the normal update file for PX
amplifi ers is not found.
5) If you want to stop update, press keys other than the
Main knob.
6) Push the Main knob, if you want to start update.
Turn the power off, and then turn back on after waiting at
01–06SYSTEM ERRORThe device has not started up correctly.
07SP PRESET DATA LOSTThe speaker preset file is corrupted.
08WRONG SP PRESET DATA
20OUTPUT CURRENT OVER [*]
21AMP TEMP TOO HIGH
22–24LIMITED BY OVERHEAT
25MUTED BY OVERHEAT
26–27POWER SUPPLY TEMP TOO HIGH
33SPEAKER IMPEDANCE TOO LOW [*]
50USB:COMPATIBLE DEVICES NOT FOUNDA USB flash drive has not been installed.
51USB:NO FILE SYSTEMThe file system of the USB flash drive is unreadable.Use a USB flash drive formatted properly to FAT32 or FAT 1 6 .
52USB:FILE NOT FOUNDThe object file has not been found.
53USB:ILLEGAL FILEIllegal file.Replace with an appropriate file and try again.
54USB:INCOMPATIBLE FORMATIncompatible file format.Replace with an appropriate file and try again.
55USB:I/O ERRORCannot read/write the USB flash drive properly.
56USB:STORAGE FULL!
58USB:LOAD ERROR
65INCOMPATIBLE DATA LOADED
70POWER TURNED ONThe device has been turned on.—
71POWER TURNED OFFThe device has been turned off.—
72SHORT INTERRUPTION
73FIRMWARE UPDATE COMPLETEDCompleted the update of the firmware.—
74PANEL UNLOCKEDReleased the panel lock.—
75SP PRESET RECALLED[*]Recalled a speaker preset. (*: speaker preset number)—
76SP PRESET LOADEDLoaded a speaker preset from the USB flash drive.—
77AMP PRESET RECALLED[*]
78AMP PRESET STORED[*]Stored an amplifier preset. (*: amplifier preset number)—
79AMP PRESET CLEARED[*]
80BACKUP DATA LOADED
90CONFIG+TUNING DATA INITIALIZEDInitialized the configuration and tuning data. —
91ALL DATA INITIALIZEDInitialized all the parameter settings.
92FACTORY DATA RESET
The speaker preset data in the device are corrupted.
Failure might have occurred in loading a speaker
preset file from the USB flash drive.
Protection of the circuitry has been enabled in the
device because there is: 1) a short at a speaker
terminal, amplifier terminal, or wire; or 2) the amplifier
load is excessive. (*: channel name)
The temperature in the amplifier unit of has exceeded
the allowed limit. The output load is excessively high.
This tends to occur when the load of only channel A is
high.
The amplifier temperature is excessively high, and so
the limiter for the output has been activated.
The amplifier temperature is excessively high, and so
the output level has been lowered.
The amplifier temperature is excessively high, and so
the cooling fan has been set to the maximum speed
and the limiter has been activated.
The speaker impedance is excessively low.
(*: channel name)
The remaining capacity of the USB flash drive is not
sufficient.
The USB flash drive has been unplugged during
access. A failure has occurred in reading files from
the USB flash drive. Data in the PX amplifier may be
corrupted or lost.
The recalled preset includes incompatible settings, so
the setting has reverted to the default. This also results
when a file stored from PX5/PX3 in Power Boost mode
has been restored.
An instantaneous power failure occurred, causing the
device to shut down and start up again.
Recalled an amplifier preset. (*: amplifier preset number)
Cleared an amplifier preset. (*: amplifier preset number)
Loaded setting data from a USB flash drive with
“RESTORE FROM USB” in DEVICE BACKUP screen.
Initialized all the speaker presets and parameter settings.
least 6 seconds. If this does not solve the problem, initialize
the memory. Should this also fail, contact your Yamaha
dealer.
Load the preset file again from a USB flash drive. If this
does not solve the problem, initialize the memory.
Load the preset file again from a USB flash drive. If this
does not solve the problem, initialize the memory.
Make sure that the speakers are not damaged and the total
impedance is not too low, and inspect the connection of the
speaker cables.
Since continuous high-power output causes high temperatures,
lower the output level. If the load is biased on the channel
A, disperse the load by connecting to the channel B or other
amplifiers. Also, check whether dirt or a foreign object could
have clogged the cooling fan, and clean the fan itself if
necessary.
Since continuous high-power output causes high
temperatures, lower the output level. Also, check whether
dirt or a foreign object could have clogged the cooling fan,
and clean the fan itself if necessary.
Since continuous high-power output causes high
temperatures, lower the output level. Also, check whether
dirt or a foreign object could have clogged the cooling fan,
and clean the fan itself if necessary.
Since continuous use may cause malfunction in the power
supply unit, stop using immediately, or lower the output
level. Also, check whether dirt or a foreign object could have
clogged the cooling fan, and clean the fan itself if necessary.
Make sure that the speakers are not damaged and the total
impedance is not too low, and inspect the connection of the
speaker cables.
Install an appropriate USB flash drive. Refer to Yamaha Pro
Audio global website (http://www.yamahaproaudio.com/) for
tested USB flash drive.
Make sure the relevant file is contained in the USB flash
drive and try again.
Confirm that the USB flash drive you are using works
properly with a computer. Use a tested USB flash drive.
Refer to Yamaha Pro Audio global website (http://www.
yamahaproaudio.com/) for tested USB flash drive.
Make sure the USB flash drive has enough free space.
Try again. The [USB] indicator flashes when the USB flash
drive is being accessed. Do not unplug the USB flash drive
during this time.