Service manual

14GT15

14GT20

ADJUSTMENT PRECAUTIONS

This model's setting are adjusted in two different ways: through the I

C bus control and in the conventional

analog manner. The adjustments via the I

C bus control include preset-only items and variable data.

1. Setting the service mode by the microprocessor.

1. Short JA 122 & JA 124 for 1 second and release to switch to the service mode position, and the

microprocessor is in input mode. (Adjustment through the I

C bus control). (Use JWS Key to set as

well).

2. Press the CH DOWN / UP key on the remote controller to get ready to select the mode one by one.

3. Press the CH DOWN / UP key on the remote controller to select the modes reversibly one by one.

4. Using the VOLUME UP/ DOWN key on the remote controller, the data can be modified.

5. Short JA 122 & JA 124 for 1 second and release to switch to the normal mode (OFF) position, and the

microprocessor is in out of the service mode.

2. Factory Presetting.

1. Short JA 122 & JA 124 for 1 second and release to switch to the service mode position and turn on the

main power switch.Initial values are automatically preset, only when a new EEPROM is used (Judge

with the first 4 bytes ).

2. The initial data are preset as listed in page 7, 8, & 9.

3. Make sure the data need modify or not (Initial data).

Note: Once the chassis has been assembly together and ready to be POWER ON for the FIRST TIME,

make sure to short JA122 & JA124 to switch to the service mode position first and then turn on the

main power switch (See 2-(1) above).

Precaution: If haven't done this initiation, it may possibly generate excessive Beam current.

3. For reference please check with memory map

(UA1 Series type RH-iX3368CE Attachment)