Sarge here with part four in our Sega NAOMI retrospective. Recently, a couple of people have asked me about the Error Codes for the Sega NAOMI platform. These are the ones that are listed in the NAOMI manual. Please keep in mind that repairs by Sega (if available) may most likely result in unit replacement. Check with local operators for a suitable (cheaper) replacement.
Sega NAOMI Error Codes:
ERROR 01
[DISPLAY] ERROR 01
THIS GAME IS NOT ACCEPTABLE BY MAIN BOARD.
[CAUSE] The ROM BOARD (or DIMM BOARD) is not connected correctly to the
MAIN BD correctly.
[FIX] First, turn power off, connect the ROM BD (or DIMM BOARD) correctly.If the status is not improved yet, the board may be malfunctioning.
ERROR 02
[DISPLAY] ERROR 02
THIS GAME IS NOT ACCEPTABLE BY MAIN BOARD.
[CAUSE] A game of a certain country's version which is not compatible with the Main BD is connected to the Main BD.
[FIX] Connect a game of a country's version which is compatible with the Main BD. Country setting change can not be preformed in the TEST mode.
ERROR 03
[DISPLAY] ERROR 03
BOARD MALFUNCTIONING.
[CAUSE] Main board serial number cannot be read out.
[FIX] Submit the DIMM board for repairing.
ERROR 04
[DISPLAY] ERROR 04
BOARD MALFUNCTIONING.
[CAUSE] DIMM board serial number cannot be read out.
[COUNTERMEASURES] Submit the NAOMI board with the DIMM board for repairing.
ERROR 21
[DISPLAY] ERROR 21
THIS GAME IS NOT ACCEPTABLE BY MAIN BOARD.
[CAUSE] Game data (loaded from the GD-ROM to the DIMM board) are corrupted.
[FIX] Make sure that the GD-ROM drive is firmly connected to the NAOMI board. Make sure that the GD-ROM disk is not scratched or contaminated.
ERROR 22
[DISPLAY] ERROR 22
COMMUNICATION ERROR OCCURRED BETWEEN MAIN BOARD AND OPTION BOARD.
[CAUSE] The NAOMI main board receives no responses from the DIMM board.
[FIX] Correctly reconnect the DIMM board and the GD interface board. If the problem is still reproduced, replace the DIMM board and/or the GD interface board.
ERROR 23
[DISPLAY] ERROR 23
GD-ROM DRIVE COVER IS OPEN.
[CAUSE] The GD-ROM drive cover is open.
[FIX] Close the cover firmly.
ERROR 24
[DISPLAY] ERROR 24
GD-ROM IS NOT FOUND.
[CAUSE] The NAOMI GD-ROM disk can not be recognized.
[FIX] Reinsert the NAOMI GD-ROM disk.
Make sure that the GD-ROM disk is not scratched or contaminated.
ERROR 25
[DISPLAY] ERROR 25
CAN NOT ACCESS GD-ROM DRIVE.
[CAUSE] (1) The GD-ROM drive can not be accessed. (2) The GD-ROM drive cover is open.
[FIX] (1) Correctly reconnect the GD cable and power cord to the GD-ROM drive. If the problem is still reproduced, replace the GD-ROM drive. (2) Close the cover firmly.
ERROR 26
[DISPLAY] ERROR 26
OPTION BOARD MALFUNCTIONING.
[CAUSE] The NAOMI board key chip can not be recognized.
[FIX] Make sure that you are using a correct key chip that meets the GD-ROM disk (If not so, change the present key chip with a correct one). Also make sure that the key chip is firmly inserted.
ERROR 27
[DISPLAY] ERROR 27
DIMM MEMORY IS NOT ENOUGH.
[CAUSE] (1) The capacity of the DIMM memory on the DIMM board is not sufficient. (2) The DIMM memory is not firmly connected.
[FIX] (1) Add the memory as required by the software you are using. (2) Firmly reconnect the DIMM memory on the DIMM board.
CAUTION 51
[DISPLAY] CAUTION 51
GAME ASSIGNMENTS ARE INCORRECT.SET CORRECTLY IN SYSTEM ASSIGNMENTS OF TEST MODE.
[CAUSE] CABINET TYPE setting is not correct for the game.
[FIX] Enter the TEST mode and change the CABINET TYPE setting of SYSTEM ASSIGNMENTS to the setting suitable for the game. For the correct setting, refer to the Instruction Manual attached to the game. Certain games require the replacement of Control Panel.
CAUTION 52
[DISPLAY] CAUTION 52
CHANGE VIDEO OUTPUT OF THIS GAME TO THE SETTING CORRESPONDING TO HORIZONTAL SCANNING FREQUENCY 15kHz.
[CAUSE] 31kHz is employed when the game is corresponding to Horizontal Scanning
Frequency of 15kHz only.
[FIX] Set the monitor to 15kHz, and No. 1 of NAOMI FILTER BD DIP SW to ON. For the setting method of monitor's Frequency, refer to the Instruction Manual of the cabinet. If the monitor is not corresponding to 15kHz, the game is not playable.
CAUTION 53
[DISPLAY] CAUTION 53
CHANGE VIDEO OUTPUT OF THIS GAME TO THE SETTING CORRESPONDING TO HORIZONTAL SCANNING FREQUENCY 31kHz.
[CAUSE] 15kHz is employed when the game is corresponding to Horizontal Scanning Frequency of 31kHz only.
[FIX] Set the monitor to 31kHz, and No. 1 of NAOMI FILTER BD DIP SW to ON. For the setting method of monitor's Frequency, refer to the Instruction Manual of the cabinet. If the monitor is not corresponding to 31kHz, the game is not playable.
CAUTION 54
[DISPLAY] CAUTION 54
GAME ASSIGNMENTS ARE INCORRECT. SET CORRECTLY IN SYSTEM ASSIGNMENTS OF TEST MODE.
[CAUSE] The setting of MONITOR TYPE differs from the correct setting of the game.
[FIX] Enter the TEST mode, and change the MONITOR TYPE setting of MONITOR TYPE in SYSTEM ASSIGNMENTS to the correct setting suitable for the game. For the correct setting, refer to the Instruction Manual attached to the game. If necessary, perform Horizontal/Vertical transposition of the monitor, as applicable.
Stay tuned for my next installment in this series.
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