Onkyo TX-SA705 Service Manual page 137

SERVICE PROCEDURES-2
6. Replacing microprocessors and flash memories
These descriptions are about writing programs to a new IC which is replaced with broken one.
1. Main microprocessor
Target IC: Q2001
No need to write the program directly to a chip by a specific ROM writer. Mount the chip on pcb and the pcb on the unit.
Refer to FIRMWARE UPDATE-2
2. Video (HDMI) microprocessor
Target IC: Q8701
No need to write the program directly to a chip by a specific ROM writer. Mount the chip on pcb and the pcb on the unit.
Refer to FIRMWARE UPDATE-3
3. 1st DSP ROM
Target IC: Q3451
Must write the program directly to a chip by a specific ROM writer before mounting on pcb.
ROM writer example: AF9708 (Ando Electric) and compatibles.
4. 2nd DSP ROM
Target IC: Q3551
Must write the program directly to a chip by a specific ROM writer before mounting on pcb.
ROM writer example: AF9708 (Ando Electric) and compatibles.
5. 3rd DSP ROM
Target IC: Q3651
Must write the program directly to a chip by a specific ROM writer before mounting on pcb.
ROM writer example: AF9708 (Ando Electric) and compatibles.
6. Video processor (HUDSON)
Target IC: Q8011
No need to write the program directly to a chip by a specific ROM writer. Mount the chip on pcb and the pcb on the unit.
Refer to FIRMWARE UPDATE-5 to 10
This procesure is through Gprobe socket P8011 on pcb: NAHDM-9265s.
7. Network (E-Control) (DTR-6.8 only)
Target IC: Q2801, Q2802
No need to write the program directly to a chip. Mount the chip on pcb and the pcb on the unit.
Need the writer " PICkit 2 (MICROCHIP) " and PC application to write.
This procesure is through JTAG socket on pcb: NALAN-9268.
for the way to write the program.
to 10 for the way to write the program.
for the way to write the program.
TX-SR705/SA705