Epson PX-8 Technical Manual page 230

REV.-A
10.1
Check level of slave
CPU 6303 (13D) pin
20.
Replace slave CPU
6303.
Replace gate array
GAH40S (13E).
Replace SED1320
(7C).
GOTO
Start.
Test speaker output
by operating micro-
cassette tape drive
and using SOUND
command.
10.4
Replace sub-CPU
7508 (2E).
Replace gate array
GAH40D.
5-29
y
N
10.2
Replace one of the follo-
wing ICs according to the
error bit:
Bit 0: 7D,
Bit 2: 6E,
Bit 4: 6D,
Bit 6: 7E,
Bit 1: 4D
Bit 3: 5E
Bit 5: 4E
Bit 7: 5D