SP2060
70
■
SYSTEM FLOW CHART
Purpose
SP2060 is provided with the test program for diagnosing the hardware.
However, when the test program can not be activated, the troubleshooting is hard.
The system flow chart shows the software’s action flow after releasing reset and may help you to troubleshoot.
Power ON
(reset)
Release CPU Reset
(Action starts in Flash ROM)
SDRAM initialization
Send Boot and Program to
SDRAM
Boot starts in SDRAM
Internal/external devices INITIAL-
IZE and Initialization display
Key pressing check
Program sum check
(Program damage check)
Program starts
Internal/external device reinitialize
and display
Measuring battery voltage
Key pressing check
Start sequence end
After this, proceed to scene recall
and network setting
[U[NEXT]
Sum error
[BACK]
LCD initializing display
LCD Copyright display
H
L
H
L
H<->L
H by CPU internal
pull-up resister.
Sets L when ini-
tializing CPU port.
Changes to H be-
fore initializing ex-
ternal device.
Changes to L after
starting task data
processing.
(After that, LCD ini-
tializing display)
Changes H/L ev-
ery 500msec.
Speaker
Processor
YAMAHA
SP2060
Scene
Recalling
Network
Setup
Copyright
2006
YAMAHA
• Can not release
CPU Reset.
• Can not access
to FLASH ROM.
FLASH ROM de-
fect, ASDRAM de-
fect
External device
defect
Test program
mode
Download
Mode
INITIALIZE
mode
CPU data processing sequence
CPU PTJ [7] (186 pin output)
Description
Cause of stop
State
LCD display
Summary of Contents for SP2060
Page 7: ...SP2060 7 DIMENSIONS 寸法図 361 354 3 4 1 44 440 480 Unit mm 単位 mm ...
Page 9: ...SP2060 9 CIRCUIT BOARD LAYOUT ユニットレイアウト LCD MODULE PN DC CPU DSP ANA ENT POWER SUPPLY UNIT PS ...
Page 29: ...SP2060 29 Pattern side パターン側 2NA WG30400 ANA Circuit Board ...
Page 30: ...SP2060 30 to DSP CN001 CPU Circuit Board 2NA WG30150 Component side 部品側 Pattern side パターン側 ...
Page 33: ...SP2060 33 2NA WG30170 DSP Circuit Board Pattern side パターン側 ...
Page 35: ...SP2060 35 B B B B DC Circuit Board 2NA WG30340 Pattern side パターン側 ...
Page 123: ......