Epson PX-8 Technical Manual page 203

REV.-A
• MANUAL Mode
The manual mode allows the user to select anyone test from those listed in Table 5-1 and is an
aid to component level troubleshooting.
Table 5-1 Functions Tested by the Test Program
No. Tested Functions
1 RAM CHECK
2 BUZZER CHECK
3
RS, SER CHECK
4 LCD CHECK
5 MCMTCHECK
6 DIP-SW READ CHECK
7 KEY BOARD CHECK
8 ANALOG INPUT CHECK
9 BARCODE CHECK
10 CLOCK CHECK
5.2.1 Repairing Tools
Table 5-2 lists necessary repair tools which are available from EPSON.
Table 5-2 Repaired Repair Tools
Tool
Q'ty
1 Test program ROM
1
2
RS-232C interface mini-wrapping connector 1
3 Serial interface mini-wrapping connector
1
4
Microcassette tape 1
5 Cable assembly (PIN B778400201)
1
6 DC regulator or dry-cell battery 1
7 Low-resolution barcode reader 1
The wrapping connector, internal pin connections, and the external power supply set-up, etc. are
illustrated in Fig. 5-1.
5-2