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STAGEPAS 500
SERVICE MANUAL
Speaker Mixer Speaker
CONTENTS
SPECIFICATIONS 3
PANEL LAYOUT 4
DIMENSIONS 4
CIRCUIT BOARD LAYOUT 5
DISASSEMBLY PROCEDURE 6
LSI PIN DESCRIPTION LSI 16
IC BLOCK DIAGRAM IC 18
CIRCUIT BOARDS 19
INSPECTIONS 27
ADJUSTMENT OF AMPLIFIER UNIT
30
FACTORY SETTING 30
TROUBLE SHOOTING 31
PARTS LIST
BLOCK DIAGRAM
CIRCUIT DIAGRAM
PA 011840
200612-155400
HAMAMATSU, JAPAN 1
Copyright (c) Yamaha Corporation. All rights reserved. PDF '07.01
STAGEPAS 500
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 : This presentation or sale of this manual to any individual or firm does not constitute authorization certification,
recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.
The data provided is belived 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 parts 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 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 As the colours of the wires in the mains lead of this apparatus may not
Connecting the Plug and Cord correspond with the coloured markings identifying the terminals in your plug
proceed as follows:
WARNING: THIS APPARATUS MUST BE EARTHED The wire which is coloured GREEN-and-YELLOW must be connected to the
IMPORTANT. The wires in this mains lead are coloured in accordance terminal in the plug which is marked by the letter E or by the safety earth
with the following code: symbol or colored GREEN or GREEN-and-YELLOW.
GREEN-AND-YELLOW : EARTH The wire which is coloured BLUE must be connected to the terminal which is
BLUE : NEUTRAL marked with the letter N or coloured BLACK.
BROWN : LIVE The wire which is coloured BROWN must be connected to the terminal which is
marked with the letter L or coloured RED.
WARNING
Components having special characteristics are marked and must be replaced with parts having specification equal to those
originally installed.
2
STAGEPAS 500
SPECIFICATIONS
General Specifications
Maximum Output Power
250 W+250 W (±10 %)/4 @10 % THD at 1 kHz (SPEAKER L/R)
200 W+200 W/4 @1 % THD at 1 kHz (SPEAKER L/R)
Maximum Output Level
116 dB (1 m)
Frequency Response (Nominal output level @ 1 kHz)
-3 dB, 0 dB, +1 dB @20 Hz20 kHz (MUSIC/SPEECH=MUSIC)
(MONITOR OUT)
-3 dB, 0 dB, +1 dB @80 Hz20 kHz (MUSIC/SPEECH=SPEECH)
(REC OUT)
-3 dB, 0 dB, +1 dB @20 Hz20 kHz, 1 W Output
(MUSIC/SPEECH=MUSIC, without Speaker EQ)
(SPEAKERS L/R)
Total Harmonic Distortion
0.5 % @20 Hz, 1 kHz, 20 kHz, +14 dBu GAIN=nominal
(MONITOR OUT, REC OUT)
Hum & Noise (Equivalent Input Noise, Rs=150 , MIC/LINE=MIC)
-106 dBu (CH1/2)
-112 dBu (CH3/4)
-65 dBu Residual output noise (SPEAKERS L/R)
Crosstalk (1 kHz)
-70 dB between input channels
Phantom Voltage
+15 V (CH14)
LIMIT/COMP switch
ON=Comp, OFF=Limit (CH1/2)
Power Consumption
65 W
Weight
24 kg (Speaker x 2 + Powered Mixer)
Stereo Input Channel Equalization
±15 dB
HIGH 10 kHz shelving
LOW 100 Hz shelving
Accessories
Power Cable, Speaker Cable, Owner's Manual
Option
Microphone
Speakers (500S)
Enclosure
2 way bass-reflex type, Polypropylene, Black
Crossover Frequency
4.0 kHz (LF: 12 dB/oct, HF: 12 dB/oct)
Frequency Range
55 Hz20 kHz (-10 dB)
Speaker Unit
LF: 10" (25 cm) Cone
HF: 1" (2.54 cm) Compression Driver
3
STAGEPAS 500
PANEL LAYOUT
MASTER 1 2 3 4 5/6 7/8 9/10
q [AC IN] jack !0 [LIMIT/COMP] switches
w [POWER] switch !1 Equalizer [HIGH]/[LOW]
e [SPEAKERS L/R] jacks (for included speakers (500S) only) !2 [REVERB] switches
!3 [REVERB] control
r [REC OUT L/R] jacks !4 [LEVEL] controls
t [MONITOR OUT L(MONO)/R] jacks !5 [MASTER LEVEL] control
y Channel input jacks (CH 1 to 4) !6 [SPEECH/MUSIC] switch
u Stereo channel input jacks (CH 5/6, 7/8, 9/10) !7 [MONITOR OUT] control
i [MIC/LINE] switches !8 [LEVEL] meter
o [PHANTOM] switch !9 [POWER] indicator
DIMENSIONS
Speaker Mixer
9/10
7/8
5/6
4
3
544.5
330
2
1
MASTER
175 111.5
342 298
152
120
2-M8 x 25
Unit: mm
4
STAGEPAS 500
CIRCUIT BOARD LAYOUT
Front view Right side view
Speaker HF
NETWORK HF < >
POWER
NETWORK DSP
CONTROL1 (1/3)
CONTROL2 (2/3)
CONTROL3 (3/3)
AMP
JACK
Speaker LF
LF < >
Rear view
CONTROL1 (1/3) POWER CONTROL2 (2/3)
DSP
CONTROL3 (3/3)
AMP
JACK
5
STAGEPAS 500
DISASSEMBLY PROCEDURE
1. Front Grille Assembly
(Time required: About 1 minute)
1-1 Remove the four (4) screws marked [190]. The front
grille assembly can then be removed. (Fig. 1)
2. Speaker LF (Woofer)
(Time required: About 2 minutes)
2-1 Remove the front grille assembly. (See procedure 1)
2-2 Remove the eight (8) screws marked [170A]. The
speaker LF (woofer) can then be removed. (Fig. 1)
2-3 Remove the wire LF (red/black) attached to the
speaker LF (woofer). (Photo 1)
3. Front Cabinet Unit, Rear Cabinet Unit
(Time required: About 2 minutes)
3-1 Remove the fourteen (14) screws marked [150A].
The front cabinet unit and rear cabinet unit can then
be separated. (Fig. 1, Fig. 2)
3-2 Remove the wire LF (red/black) attached to the
speaker LF (woofer). (Photo 1)
3-3 Remove the wire HF (yellow/blue) attached to the
speaker HF (tweeter). (Photo 2)
* Take care not to open the front cabinet unit and
rear cabinet unit too wide or the speaker LF
(woofer) terminal and speaker HF (tweeter)
terminal may be damaged.
[170A] Rear cabinet unit
[150A]
( )
Front cabinet unit
( )
[150A] [150A]
[190] [190]
Front grille assembly Speaker LF (Woofer)
( Ass'y) ( LF ( )) [150A]
[170A] [170A]
[150A]
[190] [190]
[150A]
[150A]
[170A]
[150A]
Fig.2 ( )
Fig.1 ( )
6
STAGEPAS 500
Speaker LF (Woofer) Speaker HF (Tweeter)
( LF( )) ( HF( ))
Wire LF (Red) Wire LF (Black)
( LF( )) ( LF( ))
Wire HF (Blue) Wire HF (Yellow)
( HF( )) ( HF( ))
Photo 1 ( ) Photo 2 ( )
4. Speaker HF (Tweeter)
(Time required: About 3 minutes)
4-1 Separate the front cabinet unit and rear cabinet unit.
(See procedure 3)
4-2 Remove the two (2) screws marked [140]. The
speaker HF (tweeter) can then be removed from
the front cabinet unit. (Photo 3)
5. Network Assembly, NETWORK Circuit
Board (Time required: About 4 minutes)
5-1 Separate the front cabinet unit and rear cabinet unit.
(See procedure 3)
5-2 Remove the SP connector assembly from the
network assembly. (Photo 4)
5-3 Remove the four (4) screws marked [30]. The
network assembly can then be removed from the
rear cabinet unit. (Photo 4)
5-4 Remove the four (4) screws marked [N40]. The
NETWORK circuit board can then be removed.
Network assembly SP connector assembly
(Photo 4-1) ( ) ( )
Front cabinet unit
( ) Rear cabinet unit
[140] ( )
[30]
[30]
Photo 4 ( )
Speaker HF Network Assembly
(Tweeter)
( HF
( )) NETWORK
[N40]
[N40]
Photo 3 ( ) Photo 4-1 ( )
7
STAGEPAS 500
6. Mixer Assembly, Cover Mold Assembly
(Time required: About 1 minute)
6-1 Rotate the two (2) straight slots on the fastener
heads with a coin driver or minus driver until each
straight slot is in alignment with the "OPEN" position.
The mixer assembly or cover mold assembly can
then be removed. (Photo 5)
7. JACK Circuit Board
(Time required: About 1 minute)
7-1 Remove the mixer assembly or cover mold
assembly. (See procedure 6)
7-2 Remove the three (3) screws marked [50A]. The
mount bracket assembly can then be removed
together with the JACK circuit board. (Photo 6)
7-3 Remove the SP connector assembly from the JACK
circuit board. (Photo 6-1)
7-4 Remove the hexagonal nut marked [210a]. The
JACK circuit board can then be removed from the
Fastner head Fastner head
mount bracket assembly. (Photo 6-1)
( ) ( )
Coin driver or minus driver
(
)
Fastner head
( )
Fastner head Fastner head
( ) ( )
Mixer assembly Cover mold assembly
( Ass'y) ( Ass'y)
Photo 5 ( )
Mount bracket assembly
[210a] ( )
Mount bracket assembly
( ) JACK
SP connector assembly
[50A] ( )
Photo 6 ( ) Photo 6-1 ( )
8
STAGEPAS 500
8. Rear Case
(Time required: About 2 minutes)
8-1 Remove the mixer assembly. (See procedure 6)
8-2 Remove the eight (8) screws marked [400]. The rear
case can then be removed from the mixer assembly.
(Photo 7)
9. Shield Bracket 2
(Time required: About 2 minutes)
9-1 Remove the mixer assembly. (See procedure 6)
9-2 Remove the rear case. (See procedure 8)
9-3 Remove the four (4) screws marked [380]. The
shield bracket 2 can then be removed. (Photo 8)
10. POWER Circuit Board
(Time required: About 3 minutes)
10-1 Remove the mixer assembly. (See procedure 6)
10-2 Remove the rear case. (See procedure 8)
10-3 Remove the shield bracket 2. (See procedure 9)
10-4 Remove the six (6) screws marked [290]. The POWER
circuit board can then be removed. (Photo 9)
Mixer Assembly
Shield bracket 2 ( )
[400]
[380]
[380]
Rear case ( ) [400]
Photo 7 ( ) Photo 8 ( )
[290]
POWER
[290]
Photo 9 ( )
9
STAGEPAS 500
11. DSP Circuit Board
(Time required: About 2 minutes)
11-1 Remove the mixer assembly. (See procedure 6)
11-2 Remove the rear case. (See procedure 8)
11-3 Remove the shield bracket 2. (See procedure 9)
11-4 Remove the DSP circuit board from the connectors
CN27 and CN33 of the CONTROL2 (2/3) circuit
board. (Photo 10)
CONTROL2 (2/3) [CN32]
[CN33]
DSP
[CN27]
[CN28]
Photo 10 ( )
12. AMP Circuit Board, CONTROL3 (3/3)
Circuit Board (Time required: About 4 minutes)
12-1 Remove the mixer assembly. (See procedure 6)
12-2 Remove the rear case. (See procedure 8)
12-3 Remove the shield bracket 2. (See procedure 9)
12-4 Remove the two (2) hexagonal nuts marked [240aA]
from the panel printing side. (Photo 11)
12-5 Remove the two (2) screws marked [270]. The
phone bracket can then be removed together with
the AMP circuit board and CONTROL3 (3/3) circuit
board. (Photo 12)
12-6 Remove the two (2) screws marked [260A]. The
AMP circuit board and CONTROL3 (3/3) circuit
board can then be removed from the phone bracket.
(Photo 13)
12-7 Remove the screw marked [260B]. The AMP circuit
board A can then be removed from the CONTROL3
(3/3) circuit board. (Photo 13)
12-8 Remove the screw marked [260C]. The AMP circuit
board B can then be removed from the CONTROL3
(3/3) circuit board. (Photo 13)
Panel assembly CONTROL3 (3/3)
( )
[240aA]
[270] AMP [270]
Phone bracket ( )
Photo 11 ( ) Photo 12 ( )
10
STAGEPAS 500
[260A] [260B] [260C] [260A]
CONTROL3 (3/3)
AMP B
Phone bracket
( ) AMP A
Photo 13 ( )
13. Shield Bracket 1 Assembly
(Time required: About 4 minutes)
13-1 Remove the mixer assembly. (See procedure 6)
13-2 Remove the rear case. (See procedure 8)
13-3 Remove the two (2) each screws marked [P30]. The
two (2) handles can then be removed. (Photo 14,
Photo15, Photo16)
13-4 Remove the six (6) screws marked [170B] and two
(2) hexagonal nuts marked [240aB] from the panel
printing side. (Photo 17)
13-5 Remove the shield bracket 2. (See procedure 9)
[P30]
[P30]
Photo 14 ( )
Photo 15 ( )
[170B] Panel assembly
[240aB] ( )
3
Handle ( )
1
5
6
2
4
[170B]
Photo 16 ( )
Photo 17 ( )
11
STAGEPAS 500
13-6 Disconnect the connectors CN801, CN802 and
CN803 of the POWER circuit board and the connector
CN542 of the CONTROL3 (3/3) circuit board. The
shield bracket 1 assembly (including AMP circuit
board, CONTROL3 (3/3) circuit board and POWER
circuit board) can then be removed. (Photo 18)
* When installing the shield bracket 1 assembly,
tighten the screws marked [170B] in numerical
order ( ). (Photo 17)
Shield bracket 1
( ) [CN803] [CN801] CONTROL3 (3/3) Shield Bracket 1 Assembly
POWER CONTROL3 (3/3) AMP
AMP
[CN542]
Shield bracket 1
( )
POWER [CN802]
Photo 18 ( )
14. CONTROL1 (1/3) Circuit Board
(Time required: About 8 minutes)
14-1 Remove the mixer assembly. (See procedure 6)
14-2 Remove the rear case. (See procedure 8)
14-3 Remove the shield bracket 2. (See procedure 9)
14-4 Remove the shield bracket 1 assembly.
(See procedure 13)
14-5 Remove the ten (10) hexagonal nuts marked [140a],
ten (10) flat washers marked [140b] and ten (10)
screws marked [150B] from the panel printing side.
(Photo 19)
[140a], [140b] [150B] Panel assembly
( )
[150B]
[140a], [140b]
[140a], [140b] [140a], [140b]
Photo 19 ( )
12
STAGEPAS 500
14-6 Remove the CONTROL1 (1/3) circuit board from
the connectors CN21 and CN26 of the CONTROL2
(2/3) circuit board. (Photo 20)
* The four (4) push buttons marked [120] and four
(4) push spacers marked [130] are not parts of
the CONTROL1 (1/3) circuit board. When
replacing the CONTROL1 (1/3) circuit board, be
sure to remove these parts and attach them to
the new CONTROL1 (1/3) circuit board. (Photo 21)
[120]: Push button
CONTROL1 (1/3) [CN22] ( )
[CN25]
[CN21]
[130]: Push spacer
( ) CONTROL1 (1/3)
[CN26] CONTROL2 (2/3)
Photo 21 ( )
Photo 20 ( )
15. CONTROL2 (2/3) Circuit Board
(Time required: About 9 minutes)
15-1 Remove the mixer assembly. (See procedure 6)
15-2 Remove the rear case. (See procedure 8)
15-3 Remove the shield bracket 2. (See procedure 9)
15-4 Remove the DSP circuit board. (See procedure 11)
15-5 Remove the shield bracket 1 assembly.
(See procedure 13)
15-6 Remove the CONTROL1 (1/3) circuit board.
(See procedure 14)
15-7 Remove the seven (7) volume knobs (white) marked
[80] and the volume knob (red) marked [90] from
the panel printing side. (Photo 22)
[90]: Volume knob (Red)
( ( ))
[80]: Volume knob (White)
( ( )) Panel assembly
( )
Photo 22 ( )
13
STAGEPAS 500
15-8 Remove the five (5) screws marked [110]. The
CONTROL2 (2/3) circuit board can then be
removed. (Photo 23)
* The following parts are not parts of the
CONTROL2 (2/3) circuit board. When replacing
the CONTROL2 (2/3) circuit board, be sure to
remove these parts and attach them to the new
CONTROL2 (2/3) circuit board. (Photo 24)
· [40]: Push buttons 7 pcs.
· [50B]: Volume knob (S) (white) 1 pc.
· [60]: Volume knobs (S) (green) 14 pcs.
· [70]: Volume knob (S) (blue) 1 pc.
[110] CONTROL2 (2/3) [50B]: Volume knob (S) (White) [70]: Volume knob (S) (Blue) ( (S)( ))
( (S)( )) [40]: Push button ( )
[110]
[40]: Push button
( ) CONTROL2 (2/3) [60]: Volume knob (S) (Green)
( (S)( ))
Photo 24 ( )
Photo 23 ( )
16. Power Switch, AC Inlet
(Time required: About 5 minutes)
16-1 Remove the mixer assembly. (See procedure 6)
16-2 Remove the rear case. (See procedure 8)
16-3 Remove the shield bracket 2. (See procedure 9)
16-4 Remove the shield bracket 1 assembly.
(See procedure 13)
16-5 Remove the two (2) connector assemblies
(connector assembly (1P) and connector assembly
(2P)) and earth wire soldered to the power switch
and AC inlet. (Fig. 3)
16-6 Remove the power switch by pressing its claws. (Fig. 4)
16-7 Remove the AC inlet by pressing its claws. (Fig. 5)
17. Fan (Time required: About 5 minutes)
17-1 Remove the mixer assembly. (See procedure 6)
17-2 Remove the rear case. (See procedure 8)
17-3 Remove the shield bracket 2. (See procedure 9)
17-4 Remove the shield bracket 1 assembly.
(See procedure 13)
17-5 Remove the four (4) screws marked [210]. The fan
can then be removed from the shield bracket 1
assembly. (Photo 25)
* The fan is fixed with two-sided tape. Apply
power little by little to remove the fan.
14
STAGEPAS 500
Soldering ( )
Power switch Panel ( )
( )
Connector assembly (1P) (brown)
( 1P ( ))
Earth wire (green)
( ( ))
AC inlet
(AC )
(brown) (blue) Soldering
Power switch ( ) ( ) ( )
( )
Connector assembly (2P)
( 2P)
Panel ( )
Fig.3 ( )
Claw ( )
Claw Claw ( )
Claw ( ) ( )
AC inlet
Panel ( ) (AC )
Fig.4 ( ) Fig.5 ( )
[210]
Fan ( )
Shield bracket 1 assembly
( )
[210]
Photo 25 ( )
15
STAGEPAS 500
LSI PIN DESCRIPTION LSI
YMW767-VTZ (X6055A00) CPU (SWL01B) DSP: IC1007
PIN PIN
NAME I/O FUNCTION NAME I/O FUNCTION
NO. NO.
1 Vss - Ground 65 Vss - Ground
2 TESTN I Input for TEST 66 IOVDD - Power supply +3.3 V
3 PLLBPN I PLL bypass select 67 LBN/LWRN/PF6 O External memory lower-byte enable / Port F
4 PLLVDD - PLL Power supply +2.5 V 68 UBN/UWRN/PF7 O External memory upper-byte enable / Port F
5 CIN - Capacitor terminal for PLL 69 RDN/PF4 O External memory read enable / Port F
6 PLLVss - PLL Ground 70 MD00 I/O
7 TRSTN I 71 MD08 I/O
8 TMS I 72 MD01 I/O
JTAG input
9 TCK I 73 MD09 I/O External memory data bus
10 TDI I 74 MD02 I/O
11 TDO O JTAG output 75 MD10 I/O
12 XI I Crystal oscillator 76 MD03 I/O
13 XO O Crystal oscillator 77 Vss - Ground
14 Vss - Ground 78 MD11 I/O
15 VDD - Power supply +2.5 V 79 MD04 I/O
16 ICN I Hardware reset 80 MD12 I/O
17 ECSN I CPU I/F chip select 81 MD05 I/O
18 EWRN/PD5 I CPU I/F write enable / Port D 82 MD13 I/O External memory data bus
19 ERDN/PD4 I CPU I/F read enable / Port D 83 MD06 I/O
20 EA3/PD3 I 84 MD14 I/O
21 EA2/PD2 I 85 MD07 I/O
CPU I/F address bus / Port D
22 EA1/PD1 I 86 MD15 I/O
23 EA0/PD0 I 87 WRN/PF5 O
24 IOVDD - Power supply +3.3 V 88 Vss - Ground
25 ED0/PC0 I/O 89 VDD - Power supply +2.5 V
26 ED1/PC1 I/O 90 IOVDD - Power supply +3.3 V
27 ED2/PC2 I/O 91 MA17 O
28 ED3/PC3 I/O 92 MA16 O
CPU I/F data bus / Port C
29 ED4/PC4 I/O 93 MA15 O
30 ED5/PC5 I/O 94 MA14 O
31 ED6/PC6 I/O 95 MA13 O
32 ED7/PC7 I/O 96 MA12 O
33 Vss - Ground 97 MA11 O External memory address bus
34 IRQ0N/PH0 I Interrupt input / Port H 98 MA10 O
35 TxD0 O Serial output 99 MA09 O
36 RxD0 I Serial input 100 MA08 O
37 TxD1/PG2 O Serial output / Port G 101 MA07 O
38 RxD1/PH1 I Serial input / Port H 102 MA06 O
39 SCLK1/PH2 I External synchronization clock / Port H 103 MA05 O
40 SDO O Serial output 104 Vss - Ground
41 SDI/PH3 I Serial input / Port H 105 MA04 O
42 BCLK O Bit clock output 106 MA03 O
External memory address bus
43 WCLK/SYO O Word clock output 107 MA02 O
44 SYSCLK/PG3 O Clock output / Port G 108 MA01 O
45 Vss - Ground 109 CS0N/PG0 O External memory chip select / Port G
46 VDD - Power supply +2.5 V 110 MA18 O
External memory address bus
47 IOVDD - Power supply +3.3 V 111 MA19 O
48 PA0 I/O 112 MA21/PF1 O
External memory address bus / Port F
49 PA1 I/O 113 MA22/PF2 O
50 PA2 I/O 114 MA20 O External memory address bus
51 PA3 I/O 115 MA23/PF3 O External memory address bus / Port F
I/O port A
52 PA4 I/O 116 CSIN/PG1 O External memory chip select / Port G
53 PA5 I/O 117 MA00/PF0 O External memory address bus / Port F
54 PA6 I/O 118 Vss - Ground
55 PA7 I/O 119 VDD - Power supply +2.5 V
56 Vss - Ground 120 IOVDD - Power supply +3.3 V
57 PB0 I/O 121 CS2N/PE0 O
58 PB1 I/O 122 CS3N/PE1 O
59 PB2 I/O 123 CS4N/CASN/PE2 O
60 PB3 I/O 124 CS5N/PE3 O
I/O port B External memory chip select / Port E
61 PB4 I/O 125 CS50RDN/PE4 O
62 PB5 I/O 126 CS51WRN/PE5 O
63 PB6 I/O 127 CS52WRN/PE6 O
64 PB7/SYI I/O 128 CS53WRN/RASN/PE7 O
16
STAGEPAS 500
AK5381VT (X8575A00) ADC (Analog to Digital Converter) DAC1A:IC1004
DSP: IC401
PIN PIN
NAME I/O FUNCTION NO. NAME I/O FUNCTION
NO.
1 AINR I Rch Analog input pin 9 SDTO O Audio serial data output pin
2 AINL I Lch Analog input pin 10 LRCK I/O Output channel clock pin
3 CKS1 I Mode select 1 pin 11 MCLK I Master clock input pin
4 VCOM O Common voltage output pin 12 SCLK I/O Audio serial data clock pin
5 AGND - Analog ground 13 PDN I Power down mode pin
6 VA - Analog power supply +5V 14 DIF I Audio interface format pin
7 VD - Digital power supply +3.3V 15 CKS2 I Mode select 2 pin
8 DGND - Digital ground 16 CKS0 I Mode select 0 pin
PCM1742EK (X8574A00) DAC (Digital to Analog Converter) DAC1A:IC1008
DSP: IC401
PIN PIN
NAME I/O FUNCTION NO. NAME I/O FUNCTION
NO.
1 BCK I Audio data bit clock input 9 AGND - Analog ground
2 DATA I Audio data digital input 10 VcoM - Common voltage decoupling
3 LRCK I L-channel and R-channel audio-data latch-enable input 11 ZEROR/ZEROA O Zero-flag output for R-channel/Zero-flag output for L-/R-channel
4 DGND - Digital ground 12 ZEROL/NA O Zero-flag output for L-channel/No assign
5 VDD - Digital power supply +3.3V 13 MD I Mode control data input
6 Vcc - Analog power supply +5V 14 MC I Mode control clock input
7 VOUTL O Analog output for L-channel 15 ML I Mode control latch input
8 VOUTR O Analog output for R-channel 16 SCK I System clock input
17
STAGEPAS 500
IC BLOCK DIAGRAM IC
FA3641N (X8570A00)
PWM Control CS
8
VCC
6
POWER: IC803
0.82V~0.68V 6.5 A 15.5V
REF 7 5V VCC +
UVLO
ENB
15.5V +
5V REF
+ 0.9mA
RTRch 1 8 CS +
16.5V/9V
8.5V~7.9V
FB 2 7 REF 0.8V
IS(+)/IS(-) 3 6 VCC
3.0V ENB
GND 4 5 OUT +
4V 5 OUT
OUTPUT
FB 2
Dmax PWM
+
70% OSC FF
RM RT R
QB 4 GND
0.24V
+ Q
S
+
1 3
RT IS +
LB1407-E LF (AAX68710)
AC/DC Voltage Level Meter
CONTROL2 (2/3): IC604
12, 11, 10, 9
Vref Vcc Rch D7 D6 D1
3 1 2 14 13 8
Vcc 1 14 D7
R7 R6 R1
Rch 2 13 D6
5.83 k 4.12 k 1 k
Vref 3 12 D5 -- -- --
COM COM COM
7 6 1
IN+ 4 11 D4 + + +
IN + 4
IN-- 5 10 D3
IN -- 5
OUT 6 9 D2
GND 7 8 D1
6 7
OUT GND
NJM2068M-D TE1 (AAX62750) µPC494GS-T2-A (X8569A00)
Dual Operational Amplifier Switching Regulator
CONTROL1 (1/3): IC101, 201, 501, 701, 704 POWER: IC802
CONTROL2 (2/3): IC102, 104-106, 108, 202,
203, 205, 206, 302, 402,
Non-Inv. Inv. Ref Output
Input Input Out Control Vcc C2 E2 E1
502, 503, 702, 703, 901,
16 15 14 13 12 11 10 9
902
+
CONTROL3 (3/3): IC541, 542 ERROR
AMP REFERENCE
DSP: IC103, 107, 204, 603, 1009, 2 REGULATOR
1011
ERROR
AMP OSCILLATOR
+DC Voltage + 1
Output A 1 +V 8 0.1V
Supply
Inverting
2 7 Output B 1 2 3 4 5 6 7 8
Input A - +
Non-Inverting 3 6
Inverting Non-Inv. Inv. Feed- Dead- CT RT GND C1
Input A + - Input B Input Input Back Time
Non-Inverting Control
-DC Voltage Supply 4 -V 5
Input B
18
STAGEPAS 500
CIRCUIT BOARDS
AMP Circuit Board (4200-30) ................................................................... 26
CONTROL1 (1/3) Circuit Board (6486-30) ............................................... 24
CONTROL2 (2/3) Circuit Board (6486-30) ......................................... 22/23
CONTROL3 (3/3) Circuit Board (6486-30) ............................................... 25
DSP Circuit Board (1043-40) .................................................................... 19
JACK Circuit Board (5254B-30) ............................................................... 25
NETWORK Circuit Board (5254A-30) ...................................................... 26
POWER Circuit Board (8146-40) ........................................................ 20/21
Note: See parts list for details of circuit board component parts.
DSP Circuit Board
not installed *1
+
*1 C1012
to CONTROL2 (2/3)-CN33 to CONTROL2 (2/3)-CN27
Component side
*2
C1013