Rear Display Diagnostics; Rear Display Check; Sharp Retail Network Diagnostics; Srn Self Check - Sharp UP-3300 Service Manual

3-8. Rear Display Diagnostics

The rear display is checked.
The test program displays the following patterns. When the Touch
panel is pressed, the display returns to the diagnostics menu.

1) Rear Display Check

Check content
The test patterns are displayed in the following sequence. When
the Touch panel is pressed, the next pattern is displayed.
i. The test pattern below is displayed.
0 1 2 3 4 5 6 7 8 9 ; A a B b C
ALPHA DISPLAY:
0. 1. 2. 3. 4. 5. 6. 7. 8. 9. -.
7-SEG DISPLAY:
, ,
ii. The test pattern with all the elements ON is displayed.
ALPHA DISPLAY:
8. 8. 8. 8. 8. 8. 8. 8. 8. 8. 8.
7-SEG DISPLAY:
, ,
Display
Rear Display Check
!
Terminating procedure
Press the Touch panel to turn off all the elements of the rear
display.

3-9. SHARP Retail Network Diagnostics

The SRN test is performed.
To perform this test, the following composition is required.
•
UP-3300
•
Terminal resistor
•
Branch (trunk) cable (only for data transfer test)
The following menu is displayed. Press the touch key for of the opera-
tion you want to execute to execute individual Diag programs.
Pressing the CANCEL key returns the screen to the Diag MAIN
menu.
SRN Diagnostics
Self Check
Flag Check (need of SRV reset!)
Data Check (need of SRV reset!)
Data Check (Satellite Machine)
Data Check (Master Machine)
, , , , , , , , ,
, , , , , , , ,
Cancel

1) SRN Self Check

Check content
The ROM and RAM for SRN are checked, and CTC interruption
and carrier sense are checked. Also ADLC function and transmis-
sion/reception DMA check is made by using the self loop function
of ADLC (MC6854). In addition, the other signals are checked.
The check procedure is as follows:
•
Execute diagnostics command 2. The number of resending is
displayed.
•
Execute diagnostics command 0. The error status is displayed.
The error status is as shown in the table below. When an error
occurs in this test, the following tests are not performed.
b7 An error occurs. (The error print is always 1.)
b6 An unexpected interruption is made.
b5 A collision is generated.
b4 An interruption of send complete cannot be made.
(DMAC TC UP interruption)
b3 An interruption of carrier OFF cannot be made. The
mirror image of carrier OFF shows carrier ON.
,
b2 An interruption of CTC CH2 or CH3 cannot be made.
(Timer interruption)
b1 ROM sum check error
b0 TAM error
•
Execute diagnostics command 1. The error status is displayed.
The error status is as shown in the table below.
b7 An error is generated. (The error print is always 1.)
b6 An unexpected interruption is generated.
b5 DMA sent data and received data are different.
b4 The number of data received in DMA is abnormal.
b3 The number of data transmitted in DMA is abnormal.
b2 An overrun error is generated.
b1 An underrun error is generated.
b0 An interruption of send complete cannot be made.
(DMAC TC UP interruption)
•
Execute diagnostics command 5. The error status is displayed.
The names and the directions of the signals which are subject
to diagnostics 5 command are as shown in the table below.
Power interruption notice
Power interruption ON initialization
Power interruption ON continuation
Power interruption process complete
CH1 reception data present.
CH2 reception data present.
Check that the target bit of two statuses obtained by diagnos-
tics 5 command is "0" for ST1 and "1" for ST2. (The other bits
must be masked.) In the other cases, the error status is dis-
played with the error occurrence bit as "1." The normal bit
shows "0."
The error status from the host to the controller is as shown in
the table below.
b7 Not used. ("0" is always displayed.)
b6 Power interruption notice
b5 Not used. ("0" is always displayed.)
b4 Not used. ("0" is always displayed.)
b3 Not used. ("0" is always displayed.)
b2 Not used. ("0" is always displayed.)
b1 Power ON continuation
b0 Power ON initializing
6 – 7
Signal name
Host → Controller
Host → Controller
Host → Controller
Host ← Controller
Host ← Controller
Host ← Controller
Direction