Sony UP-21MD Service Manual page 31

Aa
Adjustment and check are auiomaticaily performed by the mechanical deck. After the adjustment
and check are completed, the result appears on the screen (or LCD display).
5. When "OK" is displayed, adjustment and check are completed normally. When abnormality is
checked, an error code is displayed. (Take measures referring to the NG_CODE table (at the end of
this manual)). :
6. To exit the mechanical adjustment mode, turn on the power again.
2-2-3. Normal Operation Check and Automatic Adjustment
1. SENSORS CHECK
Contents
* Is communication between boards possible?
* Operation check of each PAPER_JAM (S10), PAPER_EJECT (S11) and DOOR sensors.
* Does the sensor of the item to be checked operate normally? (Refer to NG_CODE2.)
* Are harnesses and mechanical parts connected properly?
Procedure
(1) Pull out the ribbon cartridge and paper tray, open the front panel.
(2) Move the cursor to the desired item and press the key.
Display
* OK: OK .
* NG: NO ANSWER (If NO ANSWER is displayed, SCI communication with IC103 of the SY-299
board is impossible. Therefore, the subsequent adjustment and check cannot be carried out.)
NG command (E2) and NG data (*)(One-byte data is displayed using a hexadecimal code. The
hexadecimal code is converted into a binary code, and the bit whose "1" is set indicates the
location where NG occurs. Refer to NG_CODE2.)
2. THERMAL & EEPROM CHECK
Contents
* Does IC102 on the MEC-15 board operate normally? (The number of estimated sheets or the sensor
information is stored in IC102.)
* Do the thermistor of a thermal head, and the thermistor (THP201) on the MEC-15 board operate normally?
* Are harnesses and mechanical parts connected properly?
Procedure
(1) Move the cursor to the desired item, press the [<-] and [->] keys to select the item, and then press the
key.
When the display number is 00: Check the thermistor and EEPROM operation. (The contents remain
unchanged.)
When the display number is 01: Check the thermistor and clear the contents of EEPROM (*).
* Contents to be cleared: Number of estimated sheets, number of estimated head sheets,
ShiftH, ShiftV, error history, head voltage parameter, and sensor
information
Be sure to adjust it by display number 01 when replacing the MEC-15 board or IC102 newly.
Display
* OK: 00: OK
01: OK OK
* NG: NG command (E3) and NG data (k)(One-byte data is displayed using a hexadecimal code. The
hexadecimal code is converted into a binary code, and the bit whose "1" is set indicates the
location where NG occurs. Refer to NG_CODE3.)