Sharp Retail Network Diagnostics; Srn Self Check - Sharp UP-5700 Service Manual

3-12. SHARP Retail Network Diagnostics

The SRN interface option ER-01N-PC is tested.
Set the ER-01IN-PC DIP switch and jumpers as shown below.
1 2 3 4 5
OFF
SW2
IRQ 10 11 12 15
I/O address is different from ER-A850/880 SRN as shown in the table
below.
Register (R/W)
DRR/DWR
STR/ENR
___/WCF
HEND/SYSF
___/SRCR
TNO/___
The following composition is required for the test.
ER-01N-PC
Terminal resistor
Branch (Main line) cable (only for data transmission)
The following menu is displayed.The highlighted cursor is moved by
the cursor keys (UP and DOWN ) of the AT keyboard. Move the
cursor to the desired item, and press Enter key to execute the se-
lected diagnostics program. When the selected diagnostics program
is completed, the display returns to the menu screen. Pressing Esc
key returns to the service diagnostics menu.
SRN (SHARP Retail Network) Diagnostics
Self Check
Flag Send Check
Data Send Check
Data Transmission Check (Satellite Machine)
Data Transmission Check (Master Machine)

1) SRN Self Check

Check content
The ROM check for SRN, the interruption by CTC, and carrier
sense are checked. In addition, ADLC functions and send/receive
DMA check are made by means of the self loop function of ADLC
(MC6854). The other signals are also checked. The check proce-
dures are as follows:
i. Diag 2 command is executed and the number of resending is
displayed.
6 7 8
SW2-3 OFF
IRQ12
ER-01IN-PC
200
201
202
203
205
204
ii. Diag 0 command is executed and the error status is dis-
played. The error status is as shown in the table below. When
an error occurs in this test, the following test is not executed.
b7 An error is generated. (Error print is always "1.")
b6 An unexpected interruption is made.
b5 A collision occurs.
The interruption of transmission end (interruption of
b4
DMAC TC-UP) is not made.
The interruption of carrier OFF is not made. The
b3
mirror image of carrier OFF shows carrier ON.
The interruption of CTC. CH2, or CH3 (timer
b2
interruption) is not made.
b1 ROM SUM CHECK ERROR
b0 RAM ERROR
iii. Diag 1 command is executed and the error status is dis-
played. The error status is as shown in the figure below.
An error is generated. (Always 1 in case of error
b7
print.)
b6 An unexpected interruption is made.
Data transmitted by DMA is different from date
b5
received.
b4 The number of data received by DMA is abnormal.
The number of data transmitted by DMA is
b3
abnormal.
b2 An overrun error is generated.
b1 An underrun error is generated.
An interruption of transmission end (interruption of
b0
DNAC TC.UP) is not made.
iv. Diag command 5 is executed and the error status is dis-
played.The names of signals which are subject to the check
by diag 5 command and their directions are as shown in the
table below.
Signal name
Power OFF interruption notice
Power ON intializing
Power ON continuation
Power OFF interruption process com-
plete
CH1 received data present
CH2 received data present
Check that the target byte of two status (ST1 and ST2) ob-
tained by diag 5 command is "0" for ST1 and "1" for ST2. (The
other bits must be masked.) In the other cases, the error
occurrence bit is "1" and the error status is displayed.The
normal bits are "0."
The error status from the host to the controller is as shown in
the table below.
b7 NC (Always displays "0.")
b6 Service interruption notice
b5 NC (Always displays "0.")
b4 NC (Always displays "0.")
b3 NC (Always displays "0.")
b2 NC (Always displays "0.")
b1 Power ON continuation
b0 Power ON initializing
4 – 12
Direction
Host Controller
Host Controller
Host Controller
Host Controller
Host Controller
Host Controller