WJ-SX550 - Panasonic Video Monitoring Service Manual Supplement (repair manual). Page 12

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7. Matrix Switcher WJ-SX550
7.1. Check Menu for the CPU Board
Check
   No. 
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
k
k
k
k
k
k
X
X
X
k
k
k
k
k
X
k
k
k
k
k
k
X
k
X
X
Original Setting at Factory
ROM Check
RAM1 (IC16) Data Check
RAM2 (IC17) Data Check
Confirm by internal LED
Confirm by internal LED
RAM1, 2 Address Check
RTC (IC20) Check
SW2 Check
SW (except SW2) Check
Factory use only
Can not confirm by internal LED
All Switches Check
LED Check
VRAM (IC23, IC24) Data Check
VRAM (IC23, IC24) Address Check
RS-485 Check
Centronics Interface Check I
RS-485 Test Modular on Control 
Board can be used.
When Printer is connected
When PC is connected
Centronics Interface Check II
Graphic Check
PIO Output Port (Port C) Check
PIO Input Port (PB1) Check
Board Installation Check
RESERVED
DPRAM Data Check on Video Output Board
DPRAM Address Check on Video Output
Board
DPRAM Interface Check on Video Output
Board
D-Sub Reset signal Check on Video Output
Board
D-Sub Alarm signal Check on Video Output
Board
Between Microprocessor IC3 on 
CPU Board
Between Microprocessor IC3 on 
CPU Board
Refer to Check No. 508
Remarks (Condition)
Auto-
Recover
Check  Item
Operation
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
PC
WV-CU550
Board alone
PC
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone
WV-CU550
Board alone

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