Sansui 6060 User manual

SERVICE MANUAL
AM/FM STEREO RECEIVER
SANSUI 6060/5050
fou

This service manual is designed for service engineers to repair, adjust,
maintain and order the replacement parts of the 5050, 6060 correctly.
When ordering the parts, use the stock number and parts name speci-
fically referring to the Parts Location and Parts Lists.
For general usage and maintenance of the unit, please refer to the
Operating Instructions attached with the unit.
TABLE OF CONTENTS___...
Section
Title
Page
1.
SPECIFICATIONS
..............
0. cece
cece
eee
tenet
eens
2
2.
BLOCK
DIAGRAM
..................
0.0
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cece
cece
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eens
3
3.
ADJUSTMENTS
...........
Ula
daluih
at
auch,
ate
ePaaarciesS
wig
tren
avdiwm
Sate
teats
3
3-1. Adjustment of Bias Current ......-..-..+--+- Bisciteace ats Gane sttaea thins 3
3-2.
FM
&
MPX
Adjustment
&
Alignment
...........-.+-ese
eens
4,5
3-3.
AM
IF
Adjustment
&
Tracking
.......-.:.ee
cece
eee
ee
eet
eee
6
4. THREADING OF DIAL CORD................. 0. cece eee eee ee 7
4-1.
Threading
of
Dial
Cord
..........
60sec
eee
e
cece
enter
nee
7
4-2. Attachment of Dial Pointer .......... 2... eee e eee eee ees 7
5. PARTS LOCATION AND PARTS LIST ..................-..-0055 8
5-1.
F-2648
Power
Supply
Circuit
Board
.........-
sere
eee
eee
eens
8
5-2.
F-26517
Illumination
Circuit
Board
........-..
eee
eee
eee
eee
9
5-3.
F-2650
Capacitor
Circuit
Board......
2.6...
cee
eee eee
eee
es
9
5-4.
F-2647
Driver
Circuit
Board
.........
26
cc
cee
eens
9
5-5.
F-2646
Tone
Control
Circuit
Board
........
faa
teachin
Acleties
ke
9
5-6.
F-2590
Tuner
Circuit
Board
.......
2...
cc
eee
cece
etna
10
5-7.
F-2645
Muting
Circuit
Board
.........--.
eee
eee
eee
eee
11
~~-~-5-8,
F-2644
Equalizer
Circuit
Board
.......
agra
oshanephewasyee
tay
11
5-9.
F-2649
Filter
Circuit
Board
.....
Mele
gtiya
dus
sor
eetone
ese
ties
aashadb
eae
11
5-10.
Figures
2.2.0.6.
cee
cece
cence
en
een
e
eee
n
nents
11
© COMMON PARTS LIST FOR RESISTORS
& CAPACITORS ONLY ............... 00. cece cence eee (Attached)
6:-
OTHER:
PARTS
«060305050
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vanessa
nade
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Sian
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dys
12
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a
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12
622:
Bottom
Side:
«2s
5.4.6
eas
ee
hee
eae
ee
one,
ae
12
6-3.
Exploded
View
.......-.
ccc
e
cece
eter
eee
een
teenies
13
7. SCHEMATIC DIAGRAN...............-.----. esse eee ater tote bein sea 14
7-1.
MODEL
6060
ic.
iceberg
sree
noe
ek
ied
eka
eee
tee
asia
es
14
7-2:
MODEL.
5050:
iioc
indies
oh
keg
tg
eeene
tert
aie
ead
eee
Aaetans
15
7-3.
Semiconductors
.......--+.-.e0e-
sl
a
Ohad
5
abun
ease
es
ae
16
8.
OPERATION
BLOCK
DIAGRAM
................--
2
sere
eens
16
8-1.
Block
Diagram
of
Power
AMP.
&
Protector
Circuit
......----.
.
16
8-2.
Block
Diagram
of
Tuner
Section
....-+--++s+
eee
eres
Bice
dane
.
17
8-3.
PLL
Block
Diagram
(IC
HA1196).....-.-.-
220
e
eee
ee
eee
eens
17
8-4.
FM
IF
System
Block
Diagram
(IC
HA1137W)
...-----+--+
eee
ee
18
9.. PACKING. EIST 3 o:..a0cckeccaetswac cette ieee Bets BACK COVER
10. ACCESSORY PARTS LIST ........................005. BACK COVER

1. SPECIFICATIONS
AUDIO SECTION
POWER OUTPUT
MODEL 5050
Min. RMS, both channels driven, from 20 to 20,000Hz, with no
more than 0.5% total harmonic distortion
30 watts per channel into 8 ohms
33 watts per channel into 4 ohms
Min. RMS, both channels drivan, at 1,000Hz, with no
more than 0.5% total harmonic distortion
33 watts per channel into 8 ohms
35 watts per channel into 4 ohms
MODEL
6060
,
Min. RMS, both channels driven, from 20 to 20,000Hz, with no
more than 0.4% total harmonic distortion
40 watts per channel into 8 ohms
44 watts per channel into 8 ohms
Min. RMS, both channels driven, at_1,000Hz, with no
more than 0.4% total harmonic distortion
44 watts per channel into 8 ohms
46 watts per channel into 4 ohms
LOAD IMPEDANCE ...........- 4,8 ohms (SYSTEM A or B)
8 ohms (SYSTEM A+B)
POWER BANDWIDTH........-- 20 to 20,000Hz at or below
rated min. RMS power output
and total harmonic distortion
TOTAL HARMONIC DISTORTION
MODEL 5050 ...............05. less than 0.5% at or below
, rated min. RMS power output
MODEL 6060 .................. less than 0.4% at or below
rated min. RMS power output
INTERMODULATION DISTORTION
(70Hz:7kHz=4:1 SMPTE method)
MODEL 5050 .............0.005 less than 0.5%
MODEL 6060 .................. less than 0.4%
FREQUENCY RESPONSE (at 1 watt)
Pi cdnnha wt cazeciet: 20 to 30,000Hz +1.5dB
RIAA CURVE DEVIATION (PHONO)
ney eet Serene +1.0dB, —1.0dB
(30Hz to 15kHz)
DAMPING FACTOR... o+ ~~. approximately 45 at 8 ohm load
INPUT SENSITIVITY AND IMPEDANCE
(1 kHz, for rated power Output)
PHONO ce cccevevienbtee eee: 2.5mV/50 kiloohms
(Max. input capability. 160mV at 1kHz, less than 0.5%
total harmonic distortion.)
MIG? cee foieetiati Ble casc 2.5mV/50 kiloohms
TAPE PLAY, AUX ............ 150mV/50 kiloohms
OUTPUT LEVEL (1;000Hz)
TAPE REC (pin jacks) ........ 150mV
TAPE REC (DIN socket) ...... 30mV
CHANNEL SEPARATION (at rated output 1,000Hz)
PHONO fi we tea weve evea ses better than 45dB
TAPE PLAY, AUX ............ better than 45dB
HUM AND NOISE
PHONO ...........00.00 00s better than 70dB
TAPE PLAY, AUX ............ better than 80dB
CONTROLS
MODEL 5050
BASS ciao caniia icc ndulh +10dB (50Hz)
TREBLE co iavucaeedsx ear eccees +-10dB (10kHz)
LOUDNESS .............20005 +8dB (50Hz)
+6dB (10dB (10kHz)
HIGH FILTER ........--..-.-. —10dB (10kHz)
MODEL 6060
BAGG eee seo unaadac te. +10dB (50Hz)
TREBLE isi. c1c ss: es.0sa We.dsrdes Weise eo +10dB (10kHz)
LOUDNESS ...........0 000 +8dB (50Hz)
+6dB (10kHz)
LOW FILTER ..........-.0005 —10dB (50Hz)
HIGH FILTER ................ —10dB (10kHz)
AUDIO MUTING ............ —20dB
FM SECTION
TUNING RANGE .............. 88 to 108MHz
SENSITIVITY
MODEL 5050
EE) soos snes 11.2dBf (2.02V) z
(DIN) voc. eccccee eee ee 1.1nV a
MODEL 6060
GHP ceiatnn snl cbout 10.8dBF (1.92V)
(DIN): feseisn eae ca LTV
50dB QUIETING SENSITIVITY
STEREO (IHF) .......ccsceeee: 38d Bf (452V)
MONO (IHF) .......0e00eeees 16dBf (3.52V)
TOTAL HARMONIC DISTORTION
STEREO™ sccieciesn viseccwe alee less than 0.5%
MONO. ....... 00000 e cece less than 0.4%
SIGNAL TO NOISE RATIO (mono)
stesshoac des tite Aare Setbdoa bBtath fs better than 65dB -
SELECTIVITY ........00.cc0eeee better than 60dB anes
CAPTURE RATIO .............- less than 2.2dB
IMAGE RESPONSE RATIO (IHF). .better than 50dB (98MHz)
IF RESPONSE RATIO (IHF) ...... better than 75dB (98MHz)
SPURIOUS RESPONSE RATIO (IHF)
wy d Seba Toh oschuataen nereken’ better than 70dB (98MHz)
SPURIOUS RADIATION ........ less than 34dB
STEREO SEPARATION ........-. better than 40dB (1 kHz)
FREQUENCY RESPONSE ........ 30 to 15,000Hz +}-°dB
ANTENNA INPUT {MPEDANCE..75Q unbalanced
300 balanced
AM SECTION
TUNING RANGE .............. 535 to 1,605kHz
SENSITIVITY (Bar antenna)...... 50dB/m (1,000kHz)
SELECTIVITY ............000008 better than 35dB (1,000kHz)
IMAGE RESPONSE RATIO (IHF). .better than 35dB (1,000kHz)
IF RESPONSE RATIO (IHF) ...... better than 30dB (1,000kHz)
OTHERS
MODEL 5050
POWER REQUIREMENTS
POWER VOLTAGE............ 100, 120, 220, 240V 50/60Hz
120V (Usable 110-130V)
60Hz (for U.S.A. & Canada
only)
.125 watts (rated)
210 watts, 250VA (max.)
POWER CONSUMPTION ...
MODEL 6060
POWER REQUIREMENTS
POWER VOLTAGE............ 100, 120, 220, 240V 50/60Hz
120V (Usable 110-130V)
60Hz (for U.S.A. & Canada
only) see”
. .180 watts (rated) :
300 watts, 350VA (max.)
POWER CONSUMPTION
*Design and specifications subject to change without notice for
improvements.

TONE CONTROL CIRCUIT
F.2646
Ai: Audio Muting SW
Tape Monitor SW
N.R. Adaptor SW
®) High Filter SW
©)
<?
GN.R.
9
INPUT L-CH
Selector
Balance VR
(6060)
AUX G
rREC ©
TAPE €
PLAY G
N pout iC Mic Jack
‘LIN
3. ADJUSTMENTS
3-1.
Adjustment
of
Bias
Current
(See
Fig.
3-1
&
3-2)
eo
** Audio Muting SW
% Low Filter SW
| not included in # 5050
Relay Pili
—o~e
5 Low Filter SW
L-CH
* Speaker
Phone Jack
(5050)
ee ea
-——= +40.5V Driver Circuit
Protection
Circuit Board EQ. Tone
from Pop Noise Circuit
SUPPLY
CIRCUIT
F-2648 LI Regulated
Power Supply Tuner
Circuit
ts —45V Driver Circuit
}—_—_——» + 37V (33V)
—37V (33V)
) shows voltage of #5050
Power Transistor
Value in (
ADJUST ADJUST FOR
15mV +1ImV
STEP SUBJECT EQUIPMENT
1 Bias Current DC Volt RO5, ROZ
L-CH Meter F-2648
2 Bias Current DC Volt RO6, RO8
R-CH Meter F-2648
Fig. 3-1
L-CH
® ® ® ®
15mV +1mV
Fig. 3-2
Power Transistors
(F-2648)
TRO1, TRO2
Volt
Meter
®
:
RO7, RO8
Volt Meter © TRO3, TRO4

eee,
3-2. FM & MPX Adjustment & Alignment (See Fig. 3-3 on page 5)
Note: 1. Selector
2. FM Muting Switch
GENESCOPE
1) FM IF Adjustment & Tracking
AUDIO OSC
QO TAPE
Oo O
O
3. Connection.
4.7kQ
IN
Sansui_|
dearbys Connect the output of genescope to
TP through 100pF ceramic capacitor.
10pF
Q
DETECTOR PROBE BLOCK
FEED SIGNAL MEASURE ADJUST
STEP | SUBJECT FROM 7 | OUTPUT ADJUST FOR CONDITION
1. | IF Coil Output 60dB TPO1 TPO3 TO1 Max. IF
Genescope F-2590 F-2590 F-2590 waveform
Use Detector
Probe
2. | Discriminator | Output 50dB Same as TPO4 Center indication
Coil Genescope above F-2590 on tune meter TUNE
br
TO2
Max. linearity of
S curve
Steep linearity of *
S curve ir
T03 Set output wave
to dip point
(It’s minimum Wi
F-2590 | distortion) wi
3. | 90MHz | 99MHz ANT terminal | REC OUT LO3 Max. Output
Dial ANT Input 60dB 3002 L or R-CH +*F+2590
Calibration 400Hz (100% MOD) VTVM & Scope
. FM SSG
106MHz 106MHz ; Same as Same as above | TCO3 Same as above
Dial ANT Input 60dB above F-2590
Calibration 400Hz (100% MOD)
FM SSG
4, 9OMHz 90MHz Same as Same as above | L01,L02 | Same as above
RE Adi ANT Input 60dB above F-2590
J. 400Hz (100% MOD)
FM SSG
106MHz 106MHz Same as Same as above | TCO1 Same as above
RF Adj. ANT Input 60dB above TCO2
400Hz (100% MOD) F-2590
FM SSG
5. Signal Meter | 988MHz Same as Signal Meter VRO2 4.3 on Meter
Volume ANT Input 60dB above F-2590
400Hz (100% MOD)
FM SSG

2) MPX Adjustment
FEED SIGNAL
FROM TO
98MHz ANT terminal} Stereo
ANT Input 60dB 3000 indicator
FM SSG
Pilot 19kKHz
(10% MOD)
L-CH 1kHz
(45% MOD)
R-CH (0% MOD)
STEREO SG
MEASURE
OUTPUT
STEP SUBJECT
4. | PLL
VCO Adj.
ADJUST
VROS5
F-2590
ADJUST
FOR
Light indicator
CONDITION
Adjust the VR
within center of
lighting level.
TPOS
F-2590
Use Freq.
counter
PLL Make short
VCO Adj. between
In case of TP04 &
using Freq. chassis
counter.
VRO5
F-2590
76kHz
+200Hz
For this adjustment,
run the unit over
30 seconds.
ANT terminal] REC OUT L-CH
VTVM& Scope
98MHz
ANT Input 60dB 3002
FM SSG
Pilot 19kHz
(10% MOD)
L-CH (0% MOD)
R-CH 1kHz
(45% MOD)
STEREO SG
2. | Separation
VRO4
F-2590
Min. Output
—35dB
Confirm separation
L-CH->R-CH
—35dB
Stereo
indicator
Same as
above
3. Muting 98MHz
level & ANT Input 23dB
indicator FM SSG
level Pilot 19kHz
(10% MOD)
L-CH 1kHz
(45% MOD)
R-CH (0% MOD)
STEREO SG
Adjusting or Connecting Points on AM,
FM & FM MPX circuit board, F-2590
Fig. 3-3
a
$01
TO3
!
a
)
ey é
VRO2 VRO3
O TPOS
VROS
CFO4
VRO3
F-2590
Muting level
23dB
Indicator
lighting level
23dB

“4
|
|
|
t
3-3. AM IF Adjustment & Tracking (See Fig. 3-3 page 5)
Note: Selector. .
2. Confirm start point of dial pointer before alignment.
FEED SIGNAL MEASURE ADJUST
STEP SUBJECT FROM 7 | OUTPUT ADJUST FOR CONDITION
1. IF Coil Genescope TCO4 TP06 CF04 Max. IF
Output 65dB F-2590 F-2590 F-2590 waveform
2. | 600kHz 600kHz AM ANT REC OUT T-04 Max. Output
Dial ANT Input 60dB terminal L or R-CH F-2590
Calibration | 400Hz (MOD 30%) VTVM & Scope} .V.
AM SSG Tae
1400kHz 1400kHz Same as Same as above } TC05 Same as above -
Dial ANT Input 60dB above F-2590 ae |
Calibration 400Hz (MOD 30%)
AM SSG
3. | 600kHz 600kHz Same as Same as above | L702 Same as above
RF Adj. ANT Input 60dB above Bar
400Hz (MOD 30%) Antenna
AM SSG |
1400kHz 1400kHz Same as Same as above | TC04 Same as above
RF Adj. ANT Input 60dB above F-2590 :
400Hz (MOD 30%)
AM SSG
4. | Signal Meter | 1000kHz Same as Signal Meter VRO6 4 on meter
volume ANT Input 54dB adove F-2590
400Hz (MOD 30%)
AM SSG
Abbreviations
Epuipment Others
AM FM Generator O&cithoscope............ Genescope Clockwise o..: sees cece cece ee eee eect e eens CW.
AM Standard Signal Generator ............ AM SSG Counterclockwise ...........0. cece eee eee eee CCW
FM Standard Signal Generator .......-.-.. FM SSG ANt@nhia® ss Scien wseernds tare eee eis ed ANT.
FM Stereo Generator.............-.020005: Stereo SG Modulation ...........0ccceccce eee eeeeteeeeas MOD.
Oscilloscope 6.0... 0... c eee cee eee ee eee Scope
Audio Oscillator .............. 00.200 eee Audio Osc.
Distortion Meter ..........-... ee ee eee eee Dist. Meter

4. THREADING OF DIAL CORD
*If a dial cord is cut off or slips, replace it by following procedures.
As
this
unit
uses
0.6mmé¢
cord,
please
replace
it
with
the
same
type
certainly.
*The length of dial cord is approximately 160cm (65.3 inch).
FM
‘AM’ 535. 600
Fig. 4-2
4-1. Threading of Dial Cord
Thread the dial cord in numerical order from @® to
as Fig. 4-1. Seen ras:
1) Close the variable capacitor completely (Max. capa-
citance).
2) Tie dial cord to the screw S1 of the dial pulley.
3) Thread cord in the direction of arrow from @ to @.
4) After @, tie the cord to the screw $2 of the dial
pulley.
4-2. Attachment of Dial Pointer
1) Close the variable capacitor completely.
2) Set the.dial pointer as Fig. 4-2. —
*Confirm that the dial pointer runs smoothly on the
dial scale by turning the tuning shaft.
Parts List
Stock No. Description
6036050 Dial Cord (0.6mm¢)
6146663
D35 Type Pulley

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° e . e (Stock No. 7594161 MODEL 5050) -
5-2. F-2651 Ilumination Circuit Board (tock No. 7594111, MODEL 6060)
Parts List
Conductor Side
(Ga eee Oe
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Parts No. Stock No. Description
Deo 0310340. .10D-1__ Diode
Ceo 0501331 .- 330¢F 10V EC.
Reo o19t160 18D YW Fuse R.
° ° ° (Stock No. 7501681 MODEL 5050)
5-3. F-2650 Capacitor Circuit Board (6ck no. 7501711 MODEL 6060)
Parts List
89-50
SANSUI
mie.
sans
©
° . ° (Stock No. 7571421 MODEL 5050)
Conductor Side
ee ee
Parts No. Stock No. Description
MODEL 5050 Only.
Cais 0549112 4700 pF
C20 0549112 peed SON SEC.
MODEL 6060 Only
Cais 0549111 “6800 pF
Ce2 O54911T 6800 et sO LEG
Parts List
Parts No. Stock No. Description Position
TRo1,02 0300470,1 2SA726 (W) FG 1A.1C
TRo3, 04°. .0300470, 1 2SA726 (W) F.G 1A.1C
TRos,06 0306360,1 25C1951-1,-2 Transistor = 1A.1C
TRo7,08 0308521,2 250438 E,F 2A.2C
TRog, 10 0303361,2 258560 E,F 2A.2C°
ZDeor 0315970 EQA01-13R “Zener Diode 1B
Ra1,32 0193221 2200) , 2A.2C
Rss, 34 (0193221 pant ”AW fee k: 2A.2C
VRoi.02 1035310 1kQ (8) 1A.1C
EEE
F F (Stock No. 7561471 MODEL 5050)
5-5. F-2646 Tone Control Circuit Board (ocx No. 7561491 MODEL 6060)
Conductor Side
Parts List
Parte No. Stock No. Description Position Parts No. Stock No. Description Position
TRot,c2 0306070,1 2SCINSAG |, = CoB VRos —-1015180,1 100k. Bx2 B
TRes,o4 0306070,1 2SC1313 FG J BLA VRos 1015180, 1 .. 100k Bx 2 A
Cor.o2 0620331 330pF SOV PAC, D.C Sos. 1131110) : D
Sos 131290) Push Switch A
Reor 0193221 ©2200 Fuser. B !
VRor =—-1015190,1 10062 M.N c.B MODEL 5050 Only
VRo2 -—«-1010920,1 250k 2 x2 D.C Czs,24 0600127 0.012#F =SOV MC. *
Parts No.
Rss, 54
Stock No.
MODEL 6060 Only
Ras, 46
Raz, 48
Ras, 50
Sos
Description Position
0240824 82002 Ww CR A
0240392 _ 3.9kQ A
0240393 39kQ DYW CR. A
0240222 2.2kQ A
Push Switch
1131300
9
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