Yamaha PX-3, Service Manual

Page: 98 / 148

PX10/PX8/PX5/PX3
99
START-UP SEQUENCE
⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒
Boot Section Program Section
Output Port Provisional Initialization Power LED Lights Check if any switches are pushed PWM Oscillation Start LCD Y
AMAHA Logo Display
USB flash drive Installing Check Start
︵
About 2 seconds
︶
USB flash drive Installing Check End Output Port Re-initialization LCD Reset
︵
Screen Clear
︶
PCB AUDIO ID Acquire PCB PS ID Acquire SERIES ID Acquire POWER LED Relight PWM Oscillation Start
︵
Again
︶
LCD PX Logo Display Key Combination Acquisition USB HOST
Initialization
AMP MUTE Reset
︵
20 msec
︶
EVOL
Initialization
DSP RESET Release
︵
10 msec
︶
DSP
Initialization
1
︵
100 msec
︶
DSP
Initialization
2
︵
100 msec
︶
DSP
Initialization
3
Data Flash Condition
Check Start
︵
About 1.5 seconds
︶
Data Flash Condition
Check End
DSP
Initialization
4
DSP MUTE Re-set
︵
20 msec
︶
ADDA RESET Release
︵
100 msec
︶
DSP MUTE Release
︵
About 1 seconds
︶
DP200
Initialization
AMP MUTE Release
︵
50 msec
︶
Load each last value from Data Flash Obtain the latest attenuator value LCD
Screen Clear
LCD Initial Screen Display
LED POW-LD OUTPUT 0 1 0 1
PROTA-LD OUTPUT (0) 0
PROTB-LD OUTPUT (0) 0
SIGA-LD OUTPUT
(0) 0
SIGB-LD OUTPUT (0) 0
LIMA-LD OUTPUT (1) 1
LIMB-LD OUTPUT (1) 1
ALRT-LD OUTPUT
(0) 0
USB-LD OUTPUT (0) 0/1 0/1 0/1 0
SSP0 /EVOL-CS OUTPUT 0 Assert
SSP1 /FLA-CS OUTPUT
0
Assert Assert Assert Assert
LCD /LCD-RST OUTPUT 0 1 0 1
/LCD-CS1 OUTPUT Assert Assert Assert Assert
/LCD-WR OUTPUT Assert Assert Assert Assert
LCD-Dx OUTPUT Output Output Output Output
LCD-BL OUTPUT 0 Oscillation Oscillation
FAN FAN-CONT OUTPUT Oscillation Oscillation
VOL VOL-ALT OUTPUT 1 Toggle
OTHER USB-H/D OUTPUT 0 0
/AMP-MUTE-A OUTPUT 0 0 0 1
/AMP-MUTE-B OUTPUT 0 0 0 1
/ADDA-RST OUTPUT
(0) 0 1
/DSP-MUTE OUTPUT (0) 0 0 1
/DSP-RST OUTPUT (0) 0 1
POFF-REQ OUTPUT (0) 0
I2C0 SDA-SPR INPUT-OUTPUT Input-Output Input-Output Input-Output Input-Output
SCL-SPR INPUT-OUTPUT Input-Output Input-Output Input-Output Input-Output
I2C1 SDA-DP2 INPUT-OUTPUT Input-Output
SCL-DP2
INPUT-OUTPUT Input-Output
SW /SELA-SW INPUT Acquire Acquire
/SELB-SW INPUT Acquire Acquire
/MENU-SW INPUT Acquire Acquire
/EXIT-SW INPUT Acquire Acquire
ENC-SW INPUT
ID SERIES-ID0 INPUT Acquire
SERIES-ID1
INPUT
Acquire
SERIES-ID2 INPUT Acquire
AUDIO-ID INPUT Acquire
PS-ID0 INPUT Acquire
PS-ID1 INPUT Acquire
VOL VOL-A INPUT Acquire
VOL-B INPUT Acquire
OTHER /PWR-OFF
INPUT