Item
FL Display
Key Operation
Mode Name
Description
Front Key
Tape Eject Test
To check on the tape
eject function (For deck
1/2)
In doctor mode:
1.
Press [0] button on remote control.
FL Display Test
To
check
the
FL
segments
display
(All
segments will light up and
LED will blink at 0.5
second interval)
In doctor mode:
1.
Press [DIMMER] button on remote control.
Cold Start
To activate cold start
upon next AC power up.
In doctor mode:
1.
Press [4] button on remote control.
To exit, press [ENTER] button on remote
control or
button on main
unit.
Clock Setting
Check
To indicate that a clock
time was set properly
In doctor mode:
1.
Press [MUTING] button on remote control.
9.2.1. EEPROM Checksum (ROM Correction)
Purpose: To check for microprocessor firmware version and EEPROM checksum (ROM correction).
Below are the procedures for this mode.
Step 1: Enter into Doctor mode (for more information, refer to section 9.2 on the key operation to enter into this mode.
Step 2: Check for firmware version and EEPROM checksum (By pressing STOP button on main unit followed by “4” and “7” on
remote control).
·
When entering into DOCTOR MODE, the firmware version and checksum data of EEPROM (if applicable) will appear on FL
display. Below is the information on the EEPROM IC (ROM correction) under 3 possible situations:
1. In the case that the correction point existence data is other than 0 (ie. correction file exists), EEPROM checksum display for
the microprocessor shall be made after calculating checksum by summing up the content of data area from EEPROM IC.
2. In the case when no EEPROM IC is installed. It is display as below (no display of checksum data)
3. In cases that the filename is different even though a EEPROM is installed, or no correction file exists, [NG] shall be displayed
(the correction point existence data is set to 0 at this condition).
21
SA-AK450P / SA-AK450PC
Summary of Contents for SA-AK450P
Page 8: ...8 SA AK450P SA AK450PC ...
Page 13: ...13 SA AK450P SA AK450PC ...
Page 16: ...With reference to page 13 of the operating instruction manual 16 SA AK450P SA AK450PC ...
Page 18: ...With reference to page 17 of the operating instruction manual 18 SA AK450P SA AK450PC ...
Page 29: ...10 3 Main Parts Location 29 SA AK450P SA AK450PC ...
Page 40: ...10 16 1 Replacement of Pinch Roller and Head Block 40 SA AK450P SA AK450PC ...
Page 47: ...12 4 Checking and Repairing of Power P C B 47 SA AK450P SA AK450PC ...
Page 49: ...Fig 7 49 SA AK450P SA AK450PC ...
Page 53: ...15 3 Main P C B 15 4 Panel P C B 53 SA AK450P SA AK450PC ...
Page 54: ...15 5 Power P C B Transformer P C B 15 6 XM P C B 54 SA AK450P SA AK450PC ...
Page 55: ...15 7 Waveform Chart 55 SA AK450P SA AK450PC ...
Page 64: ...SA AK450P SA AK450PC 64 ...
Page 66: ...66 SA AK450P SA AK450PC ...
Page 86: ...SA AK450P SA AK450PC 86 ...
Page 91: ...23 Exploded Views 23 1 Cabinet Parts Location SA AK450P SA AK450PC 91 ...
Page 92: ...SA AK450P SA AK450PC 92 ...
Page 93: ...23 2 Deck Mechanism Parts Locations RAA4403 S SA AK450P SA AK450PC 93 ...