Samsung RCD-2600 User manual

samsunc
|
SERVICE
MANUAL
MODEL:
RCD-2600
Electronics
__ DTS RADIO CASSETTE RD
WITH COMPACT DISC PLAYER
¢ 200
29900
oo
Qo0e
@ 900 =a 000 SSS
C7
SPECIFICATION
RADIO
Frequency range
LF
Antenna
TAPE
Track system
Recording system
Erasing system
Monitor system
Frequency response
Tape speed
Tape drive system
Tape loading system
Motor system
: FM: 87.5 — 108MHz (87.9 ~ 107.9)
AM(MW): 530 - 1720KHz
(622 — 1611)KHz
LW: 146 - 290KHz
: FM: 10.7MHz
FM: Telescopic rod antenna
AM(MW)/LW: Ferrite bar antenna
: 4 track 2 channel
: AC bias (DECK A)
: Magnetic erasing (DECK A)
: Variable monitor
: Normal 50 — 8000Hz
CrO2/METAL (PB) 50-10000Hz
: 4.75cm/sec (Normal speed)
9.5cm/sec (High speed)
: Capstan belt driven
: Front loading
: DC synchronous
2 speed motor (DC 9V)
GENERAL
Frequency response : 20-20000Hz
Speaker : Woofer: a 100mm x 2 (4.9)
SBS :@ 100mm x 1 (82)
Max output : 4W/CH
Power source : AC: See label rating
DC: 12V (D, UM1, HP2)
DC: 6V (AA x 4)
— For memory back up.
Power consumption : 30W
Dimension 1 663(W) x 249(H) x 247(D)
Weight : 7.5Kg (Without batteries)
Headphone jack : 8 3.5mm
COMPACT DISC PLAYER
Frequency range 1 20-20,000Hz
Signal to Noise ratio : 90 dB (1KHz) with filter
Wow and flutter 1 0.001%
D/A Conversion 2 16 bit
Design and specifications are subject to change upon improvement without prior notice.

CONTENTS
@ SAFETY PRECAUTION ....
SERVICING NOTES
@ LOCATION OF CONTROLS...
DISASSEMBLY INSTRUCTION
LCD DISPLAY...
TROUBLE SHOOTING CHART......
ADJUSTMENT...
CD ADJUSTMENT.
IC AND TR LEAD LAY OUT.
BLOCK DIAGRAM...
SCHEMATIC DIAGRAM
PCB PATTERN & MARKING DIAGRAM
EXPLODED VIEW...
DECK EXPLODED VIEW (CD & CASSETTE)...
CASSETTE DECK PARTS LIST.
CD DECK PARTS LIST.
PARTS LIST.
ABBREVIATION LIS
TROUBLE SHOOTING (CD)
a
a
a
a
a
a
a
ti
@ WIRING DIAGRAM......
a
a
Ld
a
a
a
a
a
BASIC CIRCUIT OPERATION...

Hi SAFETY PRECAUTION
1. CLASS1 LASER PRODUCT
This compact disc player is classified as a CLASS 1 laser product.
2. LASER WARNING LABEL
The label shown below may be affixed or not according to country.
(UL)
(CSA)
(EU)
This
Produc.
Compiles
with
CERTIFIED
ONLY
TO
CANADIAN
DHHS
Rules
21CFR,
Sub
ELECTRICAL
CODE.
CLASS
1
chapter
J.At
date
of
Manu-
facture.
CERTIFIE
EN
VERTU
DU
CODE
LASER
PRODUCT
CANADIAN
DE
LELETRICITE
SEULEMENT
Location : Enclosure back.
(SCAN)
(EU)
‘ADVARSEL: USYNLIG LASERSTRALING VED UL : Manufactured for U.S.A. Market.
ABNING, NAR SIKKERHEDSAFBRYDERE ER CSA: Manufactured for Canadian Market.
nen plea ONDGK) UODGAETTELSE EU : Manufactured for European Market
SCAN : Manufactured for Scandinavian Market.
Location : on the disc clamper ol inner side of CD door or nearby CD chassis.
3. LASER BEAM WARNING
ADVERSEL— USYNLIG LASERSTRALING VED ABNING, NAR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION.
UNDGA UDSAETTELSE FOR STRALING.
VARNING— — OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD OCH SPARR AR URKOPPLAD. STRALEN
AR FARLIG.
VARITUS— —_LAITE SISALTAA LASERDIODIN, JOKA LAHETTAA NAKYMATONTA SILMILLE VAARALLISTA
LASERSATEILYA.
CAUTION— INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED. AVOID EXPOSURE TO
BEAM.
4, LASER DIODE SPECIFICATION (OPTICAL PICK-UP)
° Material: AlGaAs
Wavelength: 760-800mm
Emission duration: Continuous
Laser Output: 0.2mW
* This output is the value measured at distance 1.6mm from the objective lens surface on the optical pick-up block.
Classification: CLASS 1
5. WARNING FOR SERVICING
WARNING: When servicing, do not approach the LASER exit with the eye too closely. In case it is necessary to confirm
LASER beam emission, be sure to observe from a distance of more than 30cm from the surface of the
objective lens on the optical pick-up block.
VARNING: Nar underhaliningsarbeten utférs, narma dig férsiktigt och se inte pa laserutstralningen pa for nare hall. Ifall det
ar nédvandigt att betrygga laserstralens utstrémning. Var saker att kontrollera detta fran ett avstand av mer an
30cm (11.81 inch.) fran den objektiva linsens yta pa den optiska utsandningspunkten.
ADVARSEL: _Nar repareringsarbejdet udfoeres, naerm dig forsigtigt og se ikke pa laserudstralingen pa for naer hand.
It ilfaeldet at det er noedvaendigt at bestemme laserstralens udstraling. Vaer sikker pa kontrollere dette fra en
afstand af mere end 30cm (11.81 inch.) fra den objektive linses overflade pa den optiske udsendningspunkt.
VAROITUS: Silmia on varottava viemasta liian labeiie Laser-poistokanavaa huoiion aikana. Jos on valttamaténta varmistaa
Laser-Sateen paastd, pysyttels sit tarkasteltaessa vahintaan 30cm etaiyydella optisen lukon objecktiivilinssin
pinnasta.
eoo000

Wi SERVICING NOTES
Disconnect
power
supply
cord
before
separating
cabinet
for
servicing
as
you
may
experience
an
electric
shock.
Avoid
repairing
under
direct
sunshine
and
heat
which
may
cause
cabinet,
transistor
and
IC
to
be
transformed
or
misoperate.
Use
a
soft
cotton
swab
moistened
with
warm
water
or
neutral
cleaner
when
parts
of
a
unit
need
to
be
cleaned.
Be
sure
to
use
identical
and
standardized
replacement
parts,
especially
for
critical
parts
marked
by
A\
in
the
circuit
diagram
and
arts
list.
‘avoid repairing the set near a TV or any other magnetic forces.
Disconnect
the
plug
from
wall
socket
during
electric
storm
to
reduce
the
risk
of
damage.
Be
careful
of
electrostatic
damage
when
replacing
the
control
IC
such
as
u-COM,
LSI
and
pick-up.
Pons
Noa
HANDLING THE OPTICAL PICK-UP
*
The
laser
diode
in
the
optical
pick
up
may
suffer
electrostatic
breakdown
because
of
potential
static
electricity
from
clothing
and
your
body.
The following method is recommended.
Place
a
conductive
sheet
on
the
workbench.
(The
black
sheet
used
as
wrapping
for
repair
parts.)
Place
the
set
on
the
conductive
sheet
so that
the
chassis
is
grounded
to
the
sheet.
Place
your
hands
on
the
conductive
sheet.
(This
gives
them
the
same
ground
as
the
sheet.)
Remove
the
optical
pick
up block.
Perform work on top of the conductive sheet.
Be
careful
not
to
let
your
clothes
or
any
other
static
sources
touch
the
unit.
9 FON>
Be sure to put on a wrist-strap grounded to the sheet.
Be
sure
to
lay
a
conductive
sheet
made
of
copper
etc.
which
is
grounded
to
the
table.
> @ Wrist-strap
ot for grounding
ima
The unit
@ Conductive sheet

Hi
LOCATION
OF
CONTROLS
FRONT
panel
123 4 5 6 7 8 91011 12
16|18 |20)22
13° 1415 17 19 21 23
Rear panel

<FRONT Panel>
12.
13.
14.
ZSSoemengoanpwones
« [VOLUME] Control
. [Super Bass Sound] Control
. [GRAPHIC EQUALIZER] Control
HANDLE
. [CD MULTI FUNCTION] Display
ROD ANTENNA
REMOTE SENSOR
CD Door
. CD DOOR PUSH OPEN Button
. [DTS/CLOCK] Display
DTS/CLOCK operation Buttons
[TUNING UP DOWN/HOUR MIN] Button
[BAND] Button
[FM MODE] Button
{[PROG.] Button (Memory/clock Adjustment)
[AUTO] Button
[PRESET STATIONS] Button
CD Operation Buttons
[+10] Button
[NEXT/FF] Button
BACK/FB] Button
PROGRAM] Button
[DISPLAY] Button
MODE] Button
[STOP/CLEAR] Button
PLAY/PAUSE] Button
PHONES} Jack
15.
16.
17.
18.
19,
20.
21.
22.
23.
[POWER] Button
[WIDE] Button
[DUBBING] Button
[TAPE SELECTOR/BEAT-CUT] Button
FUNCTION Buttons
(CD, TAPE, TUNER]
DECK Operation Buttons
[RECORD] Button (A DECK)
[PLAY] Button
[REW] Button
[F.FWD] Button
[STOP/EJECT] Button
[PAUSE] Button
[CLOCK] Button
[TIMER ON] Button
[SLEEP] Button
<Rear Panel>
24.
25.
26.
27.
28.
29.
[MIC MIXING] Jacks
[CD-OUT] Jacks
Battery Compartment
VOLTAGE SELECTOR Switch (Option)
[AC POWER] Socket
BATTERY ON/OFF Switch

<TUNEP/CLOCK=> Display
1. [FM/MW(AM)/W)] Indicator
. [FREQUENCY/CLOCK] Indicator
. [MEMORY/NUMBER] Indicator
. [MEMORY] Indicator
. [TIMER/SLEEP/STEREO/AUTO/MONO]
Indicator
. [AM/PM] Indicator (2 BAND)
aPRwWN
2
<CD MULTI Function] Display
7. [ D>] Indicator
8. [ 00] Indicator
9. [INTRO/SHUFFLE/PROGRAM/
REPEAT/ALL] Indicator
10. TRACK NO Indicator
11. Time Indicator
12. TRACK NO Indicator
13. SYNCHRO Recording Indicator
<REMOTE CONTROL UNIT>
1. INFRARED TRANSMITTER WINDOW
. POWER ON/OFF BUTTON
. FUNCTION BUTTONS
. PRESET BUTTONS
. BAND/SLEEP BUTTONS
. CD CONTROL BUTTONS
PLAY/PAUSE BUTTON
SKIP BUTTON
STOP BUTTON
7. FREQUENCY UP/DOWN BUTTONS
. VOLUME UP/DOWN BUTTONS
9. BATTERY COMPARTMENT
OPaAPon
@

i DISASSEMBLY INSTRUCTION
CD PACK ASSY
FRONT ASS'Y
SBS ASS'Y
BACK CABINET
BACK, FRONT CABINET a |
POWER PCB
G/EQ PCB
FRONT P.C.B MAIN PCB
1. FRONT & BACK CABINET
10) ® ®© ® @
|
DECK ASSY
SBS SPEAKER |
1) Remove 12 screws (1) and 2 screws (2) and pull the front cabinet towards you and disconnect connector.
2) Remove 2 screws (3) and pull off EQ and Volume knob and pull G/EQ PCB towards you.
3) Remove 2 screws (6) and pull power PCB towards you.

2. CD pack Ass'y
e Just push the CD Pack Ass'y back to split from the Front Cabinet
3. SBS Ass'y
Remove 4 screws (4) and 4 screws (5) from the FRONT CABINET.
9 ®@ @ @
4. Deck Main PCB and Front PCB.
1. DECK
Remove 6 screws and disconnect connectors
2. Main PCB
Remove 3 screws (8)
3. FRONT PCB
Hold Front PCB by the side and lift up
5. SBS Speaker
1. Remove speaker connector-wire from Main PCB.
2. Remove connector-wire from SBS chassis.
3. Remove 10 screws (9) from SBS chassis.

i LCD DISPLAY
If one or all of the LCD Segments don't work, check Connection IC and LCD pins refering to the Segment Chart.
1. TUNER LCD
|
PIN
NO
1
2 3 4
5
6
|
7 8
9
10
|
11
12
13
14 15
|
16
COM
1
COM
|
—
AM2)
|
MW
|
SW
sreReo|
PM
|
1b
tc
|
2e
|
af
2a
|
2d
|
3e
3f
3a
—
COM
2
[-
COM
|
FM2)
|
FM)
|
LW
am
|
—
|tadeg]
COL|
2g
|
2b
|
—
|
2c
|
3g
3b
-
PIN NO | 17 18 19 20 21 22 | 23 24 | 25 | 26 | 27 | 28 | 29 | 30 31
coM1 ad | 4e | 4 | 4a | 4d | 5q | sbe|KHz |uenony O | 7a | ze | 7 | 7a [Mono
a
4
COM 2 3c 4g | 4b - 4c | Sacdf | — | MHz | AOTO| 6bc | 7c | 7g | 7b |SLEEP] —
Br aan, a a &
iw | [sw] 5 Ble
[ean PAM)
eae
a
a
LEM TAM
2 = AUTO
Cea} 72. He
-LEM}
FAM
MEMORY
Crm aa] GEES) EES BoE |

2. CDLCD
IN NO 1
Pll ee
SHUFFLE
[SHUFFLE PROGRAM| |REPEAT] || ALL
TMIN I I SECT SYNC OVER
7 IES Fads]
| LUN Fe 7 siete dito:
5 6 NH HATH Shh 45}
—10—

Mi TROUBLE SHOOTING CHART
1. AC POWER INSENSIBLE
Check AC Cord Connection
fo
Check setting of voltage
selector Switch (Option)
fe
2. BATTERY POWER INSENSIBLE
Check Proper Polarity }———-———— Install battery Properly
| Check if AC Cord is plugged in
x
-+——} Unplug
x
Check voltage of CON603
(Power PCB)
te)
Check F801 Fuse }—— Replace Fuse
fe)
il
Check CLOCK
oO
1 x
power S/W on -—————}
Check DC ON/OFF Switch
x @ Check Connection of CON603 and Soldering
@ Check Voltage of IC801 output (5V)
Check voltage at IC901 PIN13
Check voltage at base of Q808
x
Check voltage at collector of Q60! }———— Replace Q601
3. RECORDING NOT WORKING
xX
Check Rec Bias Supply |}——+| Check voltage of L501 or Q504
ah
| Check Connection of rec-head wire and soldering
1°
Check # signal is supplied to
1C301 REC IN (NO 11.14)
Jo
Check voltage ?
==

4. NO OUTPUT
x
Check if Power LED lights Refer to "BATTERY POWER INSENSIBLE"
ie)
x
Volume is set to lowest Raise Volume
oO
Check Voltage of Power IC
(IC601, 602) pins
Replace IC.
°
y
Check Connection of CON701 and Soldering |
°
y
Check Volume Input voltage through IC601, 602 |
5. COMPACT DISC INOPERATIVE
x
Check if LCD lights @ Check Leaf Switch contacts of CD Door
____,______ @ Check Connection of CW106 and soldering
Check Disc Rotation 9
x x
| Check Voltage at emitter of Q810 Replace Q810 or
ZD819
°
fe}
Make CD pack adjustment
—12—

6. TAPE NOT WORKING
x x
Check if Tape plays | ++ Check voltage Motor a Check Contact of Deck Leaf Switch
fe}
Check Output of Deck A, B
ie)
Insensible Completely
ie)
Check Voltage at IC301 pin 18 Check Connection of EQ B: line
fe)
¥ x
Check Voltage at IC301 other pins }-——————————» Replace IC.
fe}
Y
Check Connections from EQ Output
through IC601, 602
@ DECK A INOPERATIVE
A
x
Check
Connection
of
Connect
Properly
PP head con-wires
fe}
x
Deck
B
buttons
are
all
off
-_------__—_—_»
Set
all
functions
to
off
fe}
en ee
5
x
Deck!
eet
Switch
Open
Leaf
Switch
@ DECK B INOPERATIVE
x
Check Connection of Play Head con-wires }————— Connect Properly
Check Voltage at pin19 of IC301
| Check Voltage Supply of Circuitry
—13—

7. RADIO INSENSIBLE
x
Check Voltage of L105 |}___—____+| Check voltage of power Supply Circuitry
fe}
x
Check Voltage at IC201 all pins @ Check Connection of Tuner B° line
@ Replace IC
x
Check noise Check Voltage at FP1
Le pin 4
°
+f
Y
Check Connection of Rod Antenna
@ AMINSENSIBLE
fe}
x
Check FP1 Replace FP1 Check noise
fe}
fe} Check Connection of CONO1 and soldering
Jo
Check Voltage at Collector Check AM ADJUSTMENT
of a 103, 104
oO
Replace 1C901
—14—

HE
ADJUSTMENT
ADJUSTMENT PROCEDURE
INSTRUMENT AND TOOLS
. FM, AM STANDARD SIGNAL GENERATOR (SSG)
. OSCILLOSCOPE
. FREQUENCY COUNTER
VTVM
. LOOP ANTENNA
DUMMY LOAD (4 OHM)
. DIGITAL TESTER
NOgPpons
BEFORE MAKING ADJUSTMENT
1. Check the power source voltage.
2. Select desired Band and Function.
3. Set Tone Control at mid position
4. Modulate AM to 30% amplitude with 400Hz signal and FM to 22.5MHz deviation with 400Hz signal.
5. Set Volume Control to approximately S0mW (40hm)
@ ADJUSTMENT POINT LOCATION (AUDIO SECTION)
MAIN PCB (PARTS SIDE)
e@ 7105 : AMANT TRIMMER (1404KHz: 2BAND)
e@ 1102 AMASC TRIMMER (1611, 1720KHz)
e@ 1104 AM ANT TRIMMER (1404KHz)
e L102 AM OSC COIL (522, 530KHz)
e L101 AM ANT COIL (594KHz)
e L501 : REC BIAS COIL (85KHz)
—15—
LW ANT TRIMMER (270KHz)
LW OSC TRIMMER (295KHz)
LW OSC COIL (146KHz)
LW ANT COIL (164KHz)
AM IFT COIL (594KHz)
SPEED CONTROL (2985KHz)

1. MW(AM)/LW ADJUSTMENT
ITEM CONNECTION STEP | S.S.G RADIO Freq. Adjustment Point RESULT
Frequency Setting
1 522(530)KHz 522 or S30KHz L102 D/TESTER:
AM OSC coil 1.2 + 0.05V
MW(AM)
FREQUENCY Fig. 2 2 1611(1720)KHz 1611 or 1720KHz T102 D-TESTER:
RANGE AM OSC trimmer 7.8 + 0.05V
3. Repeat steps 2 and 3 several times.
IF Fig. 1 4 594KHz 594KHz T201 Maximum
AM IFT coil output
5 594KHz 594KHz AM AN coil Maximum
L101 output
MW(AM) Fig. 2
TRACKING 6 1404KHz 1404KHz AM ANT trimmer Maximum
(1104) output
ae Repeat steps 5 and 6 several times
8 146KHz 146KHz L104 D-TESTER:
LW LW OSC coil 0.9V + 0.05V
FREQUENCY Fig. 2
RANGE 9 290KHz 290KHz T103 D-TESTER:
LW OSC trimmer 4.95V+0.05V
10 Repeat steps 8 and 9 several times
an) 170KHz 170KHz L105 Maximum
LW ANT coil output
LW
TRACKING Fig. 2 12 250KHz 250KHz T101 Maximum
LW ANT trimmer output
13 Repeat steps 11 and 12 several times
2. FM: NO ADJUSTMENT DIGITAL-TESTER
MAIN PCB
Fig. 1
osc VIvM
LOOP ANT
MAIN PCB

3.
TAPE
SECTION
1.
RECORDING
BIAS
ADJUSTMENT
a)
Connect
the
frequency
counter
to
JW88
of
L501
(Bias
Coil)
as
shown
in
the
figure
3.
b)
Press
[RECORD]
button
(
@
)
of
DECK
A
and
adjust
L501
so
the
frequency
Counter
reads
reads
85KHz.
2.
TAPE
SPEED
ADJUSTMENT
a)
Connect
the
equipments
as
Fig.
4
to
adjust
the
tape
speed
with
test
tape
[recorded
at
3KHz,
MTT-111N]
in
DECK
B.
b)
Adjust
the
semifixed
resistor
(SVR801)
so
that
the
frequency
counter
reads
2985Hz
+
10Hz.
c)
Insert
a
test
tape
into
DECK
A
and
check
if
the
frequency
counter
reads
2985Hz
+
10Hz.
3.
TAPE
AZIMUTH
ADJUSTMENT
a)
Connect
the
equipments
as
Per
Fig.
5
to
adjust
the
tape
azimuth
with
test
tape
(recorded
at
10KHz
MTT-114N).
b)
Press
play
with
loading
a
test
tape
in
deck
A
and
set
Volume
Control
approximately
SOmW,
(4
OHM.)
¢)
Adjust
the
azimuth
adjustment
screw-of
left
side
of
record/play
head
for
maximum
output
and
for
the
same
channel
phase.
(See
fig.
6)
d)
Repeat
steps
a,
b,
c
in
deck
B.
e)
Secure
adjustment
screw
with
glue
after
adjustment
is
complete.
ADJUSTMENT
MAIN
PCB
Frequency
Counter
68k 85KHz
Jwes
+
SVR801
MAIN PCB
Fig.3
>
Fig.4
R/P HEAD
ADJUSTMENT SCREW

@
CD
ADJUSTMENT
1)
CLV
ADJUSTMENT
10:
1
damping
probe.
A.
Turn
power
on
without
loading
a
disc.
.
Connect
S2
(Asymetry
;
short)
-
Connect
TPS
to
GND
and
TP?
to
Positive
terminal
on
the
Frequency
Counter.
.
Adjust
VR
1702
so
that
the
Frequency
Counter
reads
4.460MHz
+
(0.01MHz).
-
Disconnect
$2.
moow
33
Asymetry
point
GND
port
of
FREQ.
COUNTER
Positive
port
of
CLV
adjustment
FREQ.
COUNTER
— 18—

2) EF BALANCE ADJUSTMENT (Power On)
.. Set Oscilloscope Time/Div to 2mS.
Set Oscilloscope Volt/Div to 0.5V.
. Connect TP1 (Vref) to GND and TP4 (T.E) to positive terminal on the oscilloscope.
. Press PLAY with loading a disc.
. Turn VR1704 all the way counter clockwise. (Sound comes out abnormally and discontinuously.)
. Adjust VR1701 so that the waveform is equally symmetrical above and below. (A = B)
. Turn VR1704 to play sound normally. (Nearly mid-positon of VR1704)
oanmoomPr
| EF Balance adjustment
Negative port of oscilloscope Positive port of oscilloscope © ©
Ag 2s