Teac AI-301DA, Service Manual

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Important Information for Service Stations and Customers
TECHNICAL INFORMATION
No.
cp-1510
DATE
15th Jun. 2015
TEAC AI-301DA, Countermeasure of noise
2. Firmware change
1) Check firmware version of unit.
a) After power off condition, keep pressing SOURCE button and Standby/ON button for 5 seconds.
b) After that, even if each buttons are released, unit firmware version is displayed to the input indicator.
Input indicator
LINE2 lighting: Version 1
LINE1 lighting: Version 2
LINE1 + LINE2 lighting: Version 3
OPTICAL lighting: Version 4
O LINE2 lighting: Version 5
O LINE1 lighting: Version 6
O LINE1 + LINE2 lighting: Version 7
For your information, each firmware version can be checked on the condition below.
USB firmware version check: On the condition that SOURCE button is ON without installing headphone jack.
Bluetooth firmware version check: On the condition that SOURCE button is OFF with installing headphone jack.
2) Update unit firmware to Version 7.
For updating firmware, ROM writer (MINICUBE2) and exchage JIG are needed.
Install conversion JIG (8 pin connector) to connector P8 on MAIN PCBA
[Needed item for writing]
- FLASH ROM Writer: MINICUBE2
- Conversion JIG
（
16pin - 8pin conversion cable
）
- PC
- Software ： Programming GUI(QB-Programmer) and parameter file(78F0527A.prm)
- Writing data (Program file) :
AI-301DA_V7.hex