Sharp CB-5470 Service Manual

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A N D i N G R E C E P T I O N T H E W O R L D O V E R
MANUAL I
• • • • • • • • • • • • • • • ^ • • • M B K H H
AM/SSB
CITIZENS BAND TRANSCEIVER
MODEL
CB-547O
'WARNING'
It is unlawful for the user to make any replacement or substittnur
of parts, adjustments or to service the transmitter by any D->~
other than a person holding a commercial 1st o. 2nd class "ad-i
operator's license. Any change in the circuitry that wou!d chariae
or violate the technical regulations or type acceptance i
prohibited.
INDEX TO CONTENTS
DATE
1. SPECIFICATIONS . .,
2. PARTS LAYOUT
3. B E H A V I O R S OF CIRCUITS
R E C E I V E R SECTION
T R A N S M I T T E R SECTION
WHAT IS N.B. ?
P.A. SECTION
WHAT IS C L A R I F t E R ?
D E S C R I P T I O N OF P H A S E - L O C K E D - ^ :
(P.L.L.i C I R C U I T
F R E Q U E N C Y OF SYNTHESIS CHAP"
WHAT IS SSB ?
4. CHANNEL SELECTOR SWITCH
5. BLOCK DIAGRAM
6. ALIGNMENT
PHASE LOCKED LOOP CIRCUIT
ALIGNMENT
RECEIVER ALIGNMENT
TRANSMITTER AND MODULATOR
ALIGNMENT. .
. . . . 2
. . . . 3
. . . . 4
. . . . 4
. . . . 4
. . . . 5
. . . . 5
. 5 - 6
. . . . 7
. 9 - 1 2
13- 14
15-20
7. TROUBLE SHOOTING GUIDE
ALL MODES
R E C E I V E R
T R A N S M I T T E R . ,
CHANNEL INDICATOR
P.L.L. C I R C U I T
P.A. SECTION
8. EQUIVALENT C I R C U I T OF 1C
9. HOW TO SET THE T R A N S i S
T
O R S ANC 1C
10. TABLE OF O P E R A T I N G VOLTAGES OF
TRANSISTOR AND 1C
11. W I R I N G SIDE OF P.W. BOARD
12. SCHEMATIC D I A G R A M
13. WAVEFORMS OF EACH SECTION
14. CHANNEL INDICATOR (LED101I
15. TRANSISTORS BASING
16. REPLACEMENT PARTS LIST .
2 5 - 2 7
SHARP ELECTRONICS CORPORATION
Executive Office:
10 Keystone Place,
Regional Offices & Distribut :r
10 Keystone Place
21580 Wilmington Ave
U.S. Subs-:
Parts Centers:
P.O. Box 664
P.O. Box 20394
-ramus,
New Jersey 07652 (201) 265-5600
i jmus, New Jersey 07652 (201)265-5600
:ng Beach, Calif. 90810 ( 2 1 3 ) 8 3 0 - 4 4 7 0
/ of Sharp Corporation, Osaka, Japan
:
jmus, New Jersey 07652 (201)265-5600
:ng Beach'. Caiif. 90801 ( 2 1 3 ^ 8 3 0 - 4 4 7 0