Sansui QRX 5001 Service Manual

Page 2

This service manual is designed for service engineers to repair, adjust,

maintain and order the replacement parts of the QRX-5001 correctly.
When ordering the parts, use the stock number and parts name specific-
ally referring to the Parts Locations & Parts Lists.

For general usage and maintenance of the unit, please refer to the
Operating Instructions attached with the unit.

TABLE OF CONTENTS

Section T_itle P_age

1.
2.
3.

7.
8.

SPECIFICATIONS ................................................
BLOCK DIAGRAM .......... 3,
ALIGNMENTS ..................................... ,
3-1. Driver Circuit Board Adjustment ...............
3-2. FM IF Alignment .....................................
3-3. FM Dial Calibration, Mono Distortion and RF Alignment
3-4. MPX Alignment .......................................
3-5. AM IF, Dial Calibration and RF Alignment .......
TROUBLESHOOTING CHART .................
4-1. Troubleshooting on Audio Section .......
4-2. Troubleshooting on Tuner Section .............. ..
PARTS LOCATIONS AND PARTS LISTS .......................... 11
5-1. F-1506 Tuner Circuit Board ............................ 11, 12, 13
5-2. F-2084~1 Vario-Matrix Circuit Board ........................ 13, 14
5-3. F-2048 Vario-Matrix Circuit Board .......................... 15. 16
5-4. F-2454 Power Supply Circuit Board ............................ 17
5-5. F-2451 Main Circuit Board .................................... 18
5-6, F~2450 Tone Control Circuit Board ...........
5-7. F-2085 Equalizr & CD-4 Main Circuit Board. . .
5-8. F 2475 CD- 4 Sub- Channel Unit Circuit Board.
5- 9. Other Parts (Top Side) .........................
5- 10. Other Parts (Bottom Side) .....................
5-11. Other Parts (Front Side).

THREADING OF DIAL CORD
SCHEMATIC DIAGRAM .
PACKING LIST . .back cover
ACCESSORY PARTS LIST .............................. back cover

(DOWNNOIUIOIJINI

.9
..
o

Page 13

: Mylar Capacitor MLC. : Mica Capacitor
Electrolytic Capacitor 0.6. : Oil Canacltor

Bi~Polar Electrolytic Capacitor P.C. : Polystyrene Capacitor
: Ceramic Capacitar T.C : Tantalum Capacitor

: Carbon Resistor
Solid Resistor
. Cement Resistor
. : Metallized Film Resistor

PPM:

250735

77055551

0sc7n 11450
scum 23121312 ascsao 351141 2571552 111450 135430

Pam No. Stock No. Doscriptlon Position 2 E
C62 0669400 1561 50v c.c. 2 1; + 12 11 111 1
C53 0620361 360155 50v 12c. 2 a E W- " "56,
C54 0601107 0.01215 50v MC. 2 0 5° E C a a .

EC 2 1 z c a
C55 0512100 10711 16v EC. 20 1.1:..."
C56 0513479 4.7m 25v E.C. 10 Egg; 1 2 , 5 5 7 9 a
C57 0515109 1,111 1 D
C50 0515109 lyF] 5°V EC' 1.20
C59 0600826 0.003210 2 0
C60 0600326 0.0032211} 50" M'C' 20
C61 051210I 100m 16V E-C- 1:29 PamNo. Stock No. Ducrlpunn PoIItlon
C62 0601100 0.1;» 2D
C63 0601108 0.1/25] 5"" MC 20 R01; 0113562 5.610 1A
C70 0519101 1,21] 50v EC 20 R09 0113123 1210} MW 5.11. 1A
C71 0519101 1#F ' 20 R10 0113332 3.310 1A
C72 0650102 1000pr 50v c.c. 1A R11 0|l6822 8210 IA
C73 0510470 47,17 6.3V ac. 213 R12 0116222 2.2110} xw 02.15.12.) 13
C74 0519105 2.2215 50v E.C. 2c R13 01l6220 220 1A
C75 0513479 4.7/4F 25v ac. 1D R14 0113222 2.210 14.5
C76 0600157 0.01520] 50v MC 20 R15 0113102 110} %W 5.11. 18
C77 0600157 0.015211 ' 20 R16 0113471 4700 11;
C76 0513479 4.7;» 25v LC. 10 R17 0113221 2200 13
C79 0629001 6800pF 50v P.C. ID R18 0113392 3.910 13
(:01 0510221 22,00F 6.3V E.C. 2C R" 013'52 1.510 13
R20 0113101 1000 1 11
R02 0113394 39010 1A R21 0113152 1.310 1 11
R03 0113103 1010} %w 5.11. 1A R22 0113471 4700 %W 5.11. 11;
R04 0113104 10010 IA R23 0113601 6800 11;
0113101 1000 (35m (1 1 A R24 0113101 1000 13
R {0113151 1500 (351(41 (RH Kw 5"? 1 A R25 0113271 2700 13
R115 0113105 1M0} 11w 511 IA R26 0115152 1.510 113
R07 0113220 220 "4 " 1A R27 0113220 220 10
topagel3