Califone 5275 Panduan Servis - Halaman 10

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Halaman Cetak

Page 10

SWITCH DESIGNATIONS

SW Function

SW1 REC/PLAY, shown in Play

SW2 PA

SW3 ALC

SW4 Tape Stop/Off/Proj. 2

SW5 Sync Record/Erase

SW6 Slide (1) Advance

SW7 Tape Stop/Restart,

Slide (2) Advance

SW8 Anti-Sync Record

SW9 Main Power

INTEGRATED CIRCUIT FUNCTIONS

Preamp, ALC, Main Amp,

ICl

TA7224P

Meter Drive

IC2 TA75324P

A: Sync Playback/EQ

B: Sync Oscillator Out

c: Proj 1 Drive Comparator

D: Proj 2 Drive Comparator

IC3 TA75324P

Location

Main PC Board

Front Panel

Jack Panel

Front Panel

Transport, right rear

Transport

1 kHz Filter/Oscillator

1 kHz Oscillator Start

150 Hz Oscillator Start

150 Hz Filter/Oscillator

5275

BLOCK DIAGRAM

TRANSISTOR FUNCTIONS

Q 1 Bias Oscillator

Q 2 Bias Oscillator Enable

Q 3 Projector 1 Relay Drive

Q 4 Motor Restart

0 5 Motor Stop Control

Q 6 Projector 2 Relay Drive, Motor Stop

Q 7 1 kHz Oscillator Start

Q 8 150 Hz Oscillator Start

Q 9 5.OV DC Regulation

Q10 Battery Diode

Q11 Motor Supply Regulation/Shutoff

Q12 Power-up Audio Mute Circuit

Q13 Power-up Audio Mute Circuit

Q14 Aux Out Buffer

Q15 Sync Playback

Q16 Motor Restart Tone Interrupt

Q17 Sync Out Shunt

Q18 Playback ALC Defeat

RELAY FUNCTIONS

RL 1

Projector 1 Advance

RL 2

Projector 2 Advance

RL 3

Sync Record