Grundig RRCD-1300 Service Manual
Service Document
Exchange Set
RRCD 1300
Service
Manual
Sicherheit
Safety
Materialnr./Part No.
720108000001
Dieses Service Dokument ist nur in Datenform verfügbar
This Service Document is only available as data
Änderungen vorbehalten/Subject to alteration
Made by GRUNDIG in Germany • HS-41 0305
http://www.grundig.com
Es gelten die Vorschriften und Sicherheitshinweise
gemäß dem Service Manual "Sicherheit", Material-
S
nummer 720108000001, sowie zusätzlich die eventuell abweichenden, landesspezifischen Vorschriften!
The regulations and safety instructions shall be
valid as provided by the "Safety" Service Manual,
S
part number 720108000001, as well as the
respective national deviations.
ǵ
A L I G N M E N T P R O C E D U R E
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INSTRUMENTS REQUIRED GENERAL PREPARATION
1. Signal Generator 1. Check source voltage, DC or AC according to specificaions
2. FM Signal Generator 2. Set function switch to band being aligned
3. FM/AM IF Sweep Generator (10.7 MHz for FM) 3. Signal input should be kept as low as possible to avoid AGC and AFC function
4. VTVM 4. Standard modulation :
5. Oscilloscope
6. Frequency counter
7. Regulated DC power supply
AM IF ALIGNMENT
SIGNAL SOURCE (AM RF Gen.)
STEP
1 loop
2 Repeat step 1 for max. output
CONNECT TO
A standard radiation
SET SIGNALTOALIGNMENT INDICATOR (Oscilloscope, VTVM)
465KHz Detector output terminal
and ground
CONNECT TO
TP5
FM IF ALIGNMENT
This model requires no FM IF alignment as the IF is fixed by ceramic filter and discriminator CF503 & CF504. Please take note that correct type and same color dot of ceramic filter is used
in servicing, diff color dot of ceramic filter may cause worse IF 'S' curve characteristic and distortion.
Connect IF genescope output terminal to TP3 & TP4 (GND) in series with a 1000Pf capacitor, connect scope input terminal to TP5 & TP4 (GND), then the IF characteristic curve can be
observed.
FM RF ALIGNMENT
STEP
SIGNAL SOURCE (FM Signal Gen.)
1
2
3
4
5
Repeat steps 3 and 4 as necessary to minimize tracking error and also steps 1 and 2 if necessar
CONNECT TO
TP1 & TP2 108.25 MHz Terminals VC 501A Volume
through matching network (modulated) across speaker (Highest end) (Osc. trimmer) Maximum control at
if necessary voice coil L503 (RF coil) max. position
SET SIGNALTOALIGNMENT INDICATOR (Oscilloscope, VTVM)
87.35 MHz (Lowest end) stretch or
(modulated) squeeze
88 MHz 88 MHz stretch or
(modulated) squeeze
106 MHz VC 501B
(modulated) 106 MHz (RF trimmer)
CONNECT TO
AM 1 KHz 30% mod
FM 1 KHz 22.5 KHz dev
SET RADIO
DIAL TO
Quiet Volume control at
Point
SET RADIO
ADJUST ADJUST FOR REMARKS
T501 Maximum
DIAL TO
ADJUST ADJUST FOR REMARKS
L502 (Osc. coil)
min. position
AM RF ALIGNMENT
STEP
SIGNAL SOURCE (AM Signal Gen.)
1
2
3
4
5
Repeat steps 3 and 4 as necessary to minimize tracking error and also steps 1 and 2 if necessar
CONNECT TO
A standard radiation (modulated) Across speaker (Highest end) (Osc. trimmer) Maximum control at
loop ant. 600 KHz voice coil L 504 max. position
SET SIGNALTOALIGNMENT INDICATOR (Oscilloscope, VTVM)
515 KHz T 502
(modulated) (Lowest end) (Osc. coil)
1635 KHz VC 501C Volume
(modulated) 600 KHz (ant. coil)
1400 KHz VC 501D
(modulated) 1400 KHz (ant. trimmer)
CONNECT TO
SET RADIO
DIAL TO
ADJUST ADJUST FOR REMARKS
ALIGNMENT PROCEDURE FOR CD SECTION
Applicable unit :
1 This model is using CD drive unit No. SANYO DA11B3V
2 The alignment for CD section is fully automatic and no adjustment is reguired
GENERAL PREPARATION -
A ) MEASURING INSTRUMENTS REQUIRED FOR TAPE B ) EQUIPMENTS REQUESTED FOR AC BIAS FREQUENCY / CURRENT ADJUSTMENT :
SPEED AND HEAD AZIMUTH ADJUSTMENT.
( 1 ) TAPE SPEED ADJUST
MTT-211NA (3150 Hz) TEST
SPEAKER
TERMINALS
MOTOR
( 2 ) HEAD AZIMUTH ADJUSTMENT . Test Point Adjust Frequency Frequency Observe at Observe
2.1 - Connect the equipments as shown in the Fig. 1. at Beat 0 Beat 1 Beat 2 Beat 0 Beat 1 Beat 2
TAPE IS REQUIRED
(The Both Speakers loading Are Required) Resistor
2.2 - Insert a test tape
2.3 - Press PLAY and set VOLUME at reference output.
2.4 - Adjust the azimuth adjustment screw for the max.
& balance ch. output on both ch. of oscilloscope.
2.5 - Secure above screw with glue after adj. completed.
1 ) Check source voltage, DC or AC according to specifications . 2 ) Set function switch to Tape being aligned .
°
FREQUENCY
COUNTER
3150 Hz
AZIMUTH ADJ. SCREW
CH. 1
R/P HEAD
OSCILLOSCOPE
FIG.1
10 KHz : MTT-114 ) into deck.
CH. 2
FIG.2
R/P HEAD
AC BIAS FREQUENCY ALIGNMENT :
Note :The test unit should be keep in recording mode and added two resistors Ra & Rb as shown in the
Ra
10 ohm
Rb
10 ohm
Fig. 2 before alignment. be sure to delete the both resistors Ra & Rb after alignment completed.
Ra or Rb L401 60 KHz ± 0.3K
INPUT
VTVM
OUTPUT
4
1
SO457
FREQUENCY
COUNTER
62KHz
==> TO CASS PCB
CN207
ǵ
RRCD 1300
R
FM ANTENNA
E. HEAD
TUNER
IC 501
U.B.S.
Q206 Q207
AUDIO
CONTROL
VR351
POWER
AMPLIFIER
IC201
-CH SP
L-CH SP
R/P HEAD
CD
MECHANISM
KEY BOARD
TAPE R/P
IC 401
DA11 B3N
FUNCTION
SELECTOR
REC
SW 201
CD SERVO SYSTEM
U701 U702
CD DISPLAY
MUTING
CIRCUIT
Q204 Q205
IR RECEIVER
9V MAIN SUPPLY
D301 D302
D303 D304
DC 9V
DC 6V
Q201 Q202 Q203
AC IN
BATT.
12V
6V REG
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RRCD 1300
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RRCD 1300
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RRCD 1300
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