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3.
Outline of Tests
3-1.
SRAM Test (NO. 01)
Content: Checks Address Bus and Data Bus of SRAM.
Example of execution screen
*** 01. SRAM ***
SRAM AddressBus
SRAM DataBus
EXIT:[ENTER]
*** 01. SRAM ***
SRAM AddressBus
SRAM DataBus
EXIT:[ENTER]
Messages:
• When address bus access abnormality is detected: NG: SRAM AddressBus NG!
• When data bus access abnormality is detected:
Troubleshooting:
The SRAM (CPU circuit board: IC009) may be defective.
Or check the connection between SRAM and CPU (CPU circuit board: IC002).
Notes:
When SRAM test is executed, the data stored in the SRAM will be cleared.
After SRAM test is executed, initialize the SRAM (CURRENT BACKUP or FACTORY SETUP). (Refer to 68 page.)
3-2.
BATTERY Test (NO. 02)
Content: Measures and checks the backup battery voltage with A/D automatically.
Also the measured battery voltage is displayed.
Example of execution screen
*** 02. BATTERY ***
VOLTAGE:3.05[V]
OK.
VOLTAGE:2.50[V]
NG:BATTERY LOWER ERROR!
EXIT:[ENTER]
Messages:
• At battery over voltage:
• At lower battery voltage:
• At shortage of battery voltage:
Troubleshooting:
Check the backup battery (CPU circuit board: BT001).
Or check the route from the backup battery to PTK[1] (114pin) and AN[6] (238pin) of CPU (CPU circuit board: IC002).
Applicable Range of Measured Voltage:
• Acceptable voltage range
• Over voltage
• Low voltage
• Voltage shortage
OK!
OK!
NG!
NG!
Displayed at OK
Displayed at NG
NG: SRAM DataBus NG!
Displayed at OK
Displayed at NG
NG: BATTERY OVER ERROR!
NG: BATTERY LOWER ERROR!
NG: BATTERY EMPTY ERROR!
: 2.80 [V] -3.50 [V]
: 3.51 [V] or above
: 2.79 [V] -0.51 [V]
: 0.5 [V] or below
SP2060
39
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