Read Circuit Block Diagram - Tandon TM848-1 Operating And Service Manual

UPPER
HEAD
LOWER
HEAD
DIFFERENTIATOR
DIGITIZER
INT WRT BUSY
UNIT SELECT
Circuit Description
When a two-sided diskette is installed, the signal IN1FF+ is generated and gated by U4 to enable the
low-going output Two Sided. The IN1FF signal also goes to the ready circuitry at U6-5 to disable
Ready in the event that the upper head (H ead 1) is selected when a single-sided (Head 0) diskette is
installed (see Option RM for further discussion).
READ AND HEAD
SWITCHING
CIRCUITS
TEST POINT 4
CROSSOVER
DETECTOR
TEST POINT S
DATA OUTPUT
Figure 3-11

Read Circuit Block Diagram

3-1 4
TEST POINT 2
SIGNAL
AMPLIFIER
TEST POINT 3
TIME DOMAIN
FILTER