Alignment Checks - AMSTRAD CPC6128 Service Manual

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The data contained in the following 4 pages is for information only. Service Agents must not carry
out any repair or adjustment to the Drive mechanism and its associated PCB 30001 during
warranty. Fauity mechanism must be returned to AMSTRAD for exchange.
Alignment Checks
1. Redial adjustment by use of Track 19 (Fig. 1).
List of Test Points
Test point Name of signal
Read signal of filter outlet
Read signal of filter outlet
Signal ground
TROO sensor output
Index signal
Signal ground
BLOCK 2 BLOCK 3 BLOCK 49
500ps
200ms (TOTAL 49 BLOCKS)
INDEX INDEX
Fig.1 Waveform of 119 (Servo pattern)
300ps