Basic Hardware Analysis - AMSTRAD CPC664 Service Manual

/connect to
A
(240V
AC
MAINS)
CPC664
—
BASIC
HARDWARE
ANALYSIS
CHECK KEYBOARD PCB
FOR SIGNS OF ABUSE:
-
CRACKS
-
LIQUID SPILLAGE
- DISTORTED MOUNTING
CHECK CONNECTOR LEAD
AND
TERMINATION
IF
UNIT STILL
FAULTLY SEEK
SPECIALIST
ADVICE
FAULTY AUDIO
AMP
OR SPEAKER
FAULTY
VOLUME CONTROL
FAULTY AUDIO
CONNECTOR
PLUG/SOCKET
FAULTY AY-3-8192
SOUND
IC
FAULTY VIDEO
CONNECTOR
FAULTY CABLE ASSY
FAULTY
ULA
FAULTY PCB
CHECK FAULTY MONITOR
#
CABLE TERMINATION
INTERNAL
CONNECTORS
*
BRIGHTNESS CONTROL
FAULTY
ULA
Z80A
6845
CRYSTAL
RAM
Full
diagnostic
tests
on
the
C.P.U.
can be
carried out using the
Amstrad RP1
Test Pack.
Please contact Amstrad
PLC
for
information
on same.