AKAI 21CTU91BC - HOW TO ENTER SERVICE MODE - MAIN POWER SUPPLY [SMPS] SCHEMATIC - MEMORY IC REPLACEMENT - LOGO EDIT - Zoom Adjust - FACTORY DEFAULT DATA TABLE - Universal Remote Control Set-up Codes

SERVICE MODE [FACTORY MODE]

• To enter BUS control mode, Press “TEST” key on the Remote control unit of factory.

1. Customer remote control press "MENU" key behind in a row press"6""4""8""3"
2. Choose a "SETUP SELECT" options in "M2" menu, one by one in order press the numerical key"6, 4, 8 and 3",  press "MUTE" key again can depend on this get into "M3"~"M9" of design menu, general factory the production doesn't need to carry on M 3~ adjustments of M9.
3. In "M0"~under"M9" appearance press” CALL” the key can get into "M" appearance.
4. At “M” under the appearance press “-/-“ the key can get into “BUS OPEN” appearance, at “BUS OPEN under, press “-/-“ the key recover factory appearance.

REMOTE CONTROL KEYS

FACTORY DATA SETTINGS [DEFAULT]

{CLICK ON TABLES TO ZOOM IN}

LOGO EDIT

This software LOGO is a pair of pleased words and customer to edit 2 kinds, at the M_MODE; long press [P.P] the key can get into a pair of pleased words editor appearance.

• Press [1]/[2] keys:  The LOGO perpendicular position adjust, [1] adjusts upward, [2] get down adjustment;
• Press [3]/[4] keys: The LOGO level position adjusts, [3] is to the left adjustment, [4] and rightwards adjusts; 
• Press [REVIEW] key: Withdraw LOGO editor appearance, the LOGO information remembers EEPROM and return to M_MODE;
• Press again [MENU] the key can get into and can edit LOGO appearance.

1. Press [1]/[2] keys:  The  LOGO  perpendicular position adjust, [1] adjusts upward, [2] get down adjustment;
2. Press [3]/[4] keys: The LOGO level position adjusts, [3] is to the left adjustment, [4] and rightwards adjusts; 
3. Press [5]/[6] keys: The color choice of the LOGO character list, [5] change the first color, [6] change the second color;
4. Press [7]/[8] keys: The LOGO character list size adjusts, [7] change the first size, [8] and regulate the second size;
5. Press [0] keys: Delete the letter of alphabet of importation.

• Press [(]/[(] key: The LOGO character list choose (0~9;A~Z;a~z; ":.+-*/@", SPACE);
• Press [(]/[(]key: Move cursor;
• Press [REVIEW]key: Withdraw LOGO editor appearance, the LOGO information remembers EEPROM and return to M_MODE.

The ZOOM adjusts.

At the M_MODE, press [ZOOM] key: Press when screen showed "ZOOM" or"16:9"[VOL+]/[VOL-] the key regulated ZOOM/16:9 of field.

SMPS SCHEMATIC DIAGRAM

For Universal remote control set-up codes to Akai, either see the previous post or Click Here.