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8. DISASSEMBLY INSTRUCTIONS
Shown in Fig —.
1
Lower Cabinet
2
P.C. Boards
9. TROUBLE SHOOTING GUIDE
9.1. Service Hints
SYMPTOM
No Tone Dialing
Dead
Rings, no dial tone, no pulse or tone dial
No rings
No volume Handset
Buttons stick under upper cabinet assembly.
From key board
No pulse dial
9.2. Pulse Dialing Problems
To remove —.
Screws (2.6 × 12) . . . . . . . . . . . . . (A) × 5
Remove the P.C.Boards
Remove —.
Check IC1, Q2, Q1, C22 and R24.
Check IC1, Q2, Q1 and D17.
Check Q1, Q2, D17, Q3 and IC1.
Check C1, R2, D4 and IC1.
Check IC1, R24, C15 and C22.
Adijust the setting of buttons.
Check Q1, Q2 and IC1.
6
CURE
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