Commodore Amiga - Page 8

AMIGA 1000 ASSEMBLY LEVEL REPAIR
1.5 VIDEO OUTPUT CHECK
1.5.1 Measure signals on the PCB at locations:
A. Resistor R16 —Should
B. Resistor R23 —Should
C. Resistor R24 —Should
D. Resistor R25 —Should
Approx. + 5 Volt Composite Sync
Approx. +1 Volt Analog Blue
Approx. + 1 Volt Analog Green
Approx. + 1 Volt Analog Red
• If ALL readings are CORRECT, check MONITOR and CABLE CONNECTIONS.
• If MONITOR and CONNECTIONS ARE OK, REPLACE the COMPUTER PCB.
Refer to SECTION 2, COMPUTER DISASSEMBLY, Steps 2.5 and 2.6.
• If ANY readings are INCORRECT, REPLACE the COMPUTER PCB.
Refer to SECTION 2, COMPUTER DISASSEMBLY, Steps 2.5 and 2.6.
1-5