Grundig RRCD 1300 Service Manual

Page 1

Service Document
Exchange SeI

RRCD 1300

Service A

Manual
Skherlieil
Safeiy

Mun/Pm No. A
720108000001

Es gehon dia Vorsclurilien und Sicherheiishiwwaise
Mam Service Manual 'Sidiefheii",Mmerial-
nummer 720100000001,sowiemsétrJidi die even-
mell abweiclienden, landesspezifischen VomhriF
Ien!

The regulations and saleiy insimciions shall be
valid as pfmided by the "Saleiy" Service Manual,
pan numbe! 720108000001, as we" as 111:
respedive naiianal deviaiions.

Dims Service Dokumam isi nur in Davenfami verlijdoar
This Service Document is only available as data

Andwngen vorbehullen/Subied ca aliemiion
Mind: by GRUNDIG in Gsfmany I H541 0305

himJ/wwwgmndigcom

GRUI'IDIG

Page 2

ALIGNMENT

PROCEDURE

Signal inpul strould tre kept as low as possiole to avoid AGC and AFc Iunction
AM 1 KHZ 30% mod
FM 1 KHz 22.5 KHZ deir

INSTRUMENTS REQUIRED GENERAL PREPARATION

1. Signal Generator 1. Check source voltage, Dc or Ac according to speClIiCanns
2. FM Signal Generator 2. Set Iunction sWilcti to pend oeing aligned

a. FM/AM IF Sweep Generator (10.7 MHz tor FM) 3.

4. VTVM 4. Standard modulation ;

5. OScllloSCope

5. Frequency counler

7. Regulated Dc power supply

AM IF ALIGNMENT

SIGNAL SouRCE (AM RF Gen.) SET SIGNAL ALIGNMENT INDIcATDR (Oscilloscope. VTVM) SEr RADIo
51E? CDNNECTTO To CONNECTTO DIALTO ADJUST 051 F°R REMARKS
. TP5 .
A standard radiation 465ml Dem, MW ermina Quiet T501 Maximum Volume control at
1 loop Point min. position
and ground

2 Repeal step 1 Ior max. oulput

FM IF ALIGNMENT

This model requires no FM IF alignment as the IF is fixed by ceramic Iilter and discriminator CFsoa a CF504. Please take note that correct type and same color dot or ceramic filter is used
in sen/icing. dm color dot or ceramic filter may cause worse IF 5 curve characteristic and distortion.

Connect IF genescope output terminal to TF3 a TP4 (GND) in series wiltr a meow capacitor, connect scope input terminal toTP5 &TP4 (GND). tnen tire IF ctraracterislic curve can tre

observed.

FM RF ALIGNMENT

SIGNAL SouRCE (FM Signal Gen.) SET SIGNAL ALIGNMENT INDICATOR (Oscilloscope, VTVM) SET RADIo
STEP coNNECTTo To comma) DIAL To ADJUST ADJUST FOR REMARKS
L502 (OSC. coil)
1 e135 MHz (Lowest end) stretctr or
(modulated) Squeeze
TPI a TF2 103.25 MHZ Terminals vc 501A Volume
2 through malctiing network (modulated) across speaker (Higtresl end) (Osc. trimmer) Maximum control at
iI necessary voice coil L503 (RF coil) max. position
a as MHz as MHz stretctr or
(modulated) squeeze
105 MHz vc 5015
4 (modulated) 105 MHz (RF trimmer)
5 Repeat steps a and 4 as necessary to minimize racking error an also steps l and 2 it necessary

AM HF ALIGNMENT

HEP CONNECT TO TO

515 KHz

l535 KHz

A standard radiation

loop ant. 600 KHz

l400 KHz

error

CONNECT TO

Across speaker
voice coil

DIALTO

600 KHz

Moo KHz

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 - 1 ) Check source voltage, DC or AC according to specifications ,

ADJUST
T 502

VC 501C

L 504

V0 501D

FOR REMARKS

Volume
Maximum Dontml at
max. position

2 ) Set Iunction switctr to Tape oeing aligned .

A) MEASURING INSTRUMENTS REQUIRED FOR TAPE
SPEED AND HEAD AZIMUTH ADJUSTMENT.

(1 )TAPE SPEED ADJUST
MIT-211NA (3150 HZ) TEST

FREQUENCY OSCILLOSCOPE
CcumER
§ § 3(50 H1 E
on 1 ca 2
semen i b a
TERMINALS
FIGI

up: is amuleec

(2) HEAD AZIMUTH ADJUSTMENT.

2.1 - Connect the equipments as Shown in tire Fig. 1.
(Ttre Both Speakers loading Are Required)

2.2 - Insertatesttape(1o KHz ; MTr-114 ) into deck.

2.3 - Press PLAY and set VOLUME at reference output.

2.4 - Adjust the azimuth adjustment screw Iorttie max.
is palanoe Ch. output on both Ch. ol oscillosoope.

2.5 - Secure above screw with glue after adj. completed.

FIG.2

we Row

B) EOUIPMENTS REQUESTED FOR AC BIAS FREQUENCY/CURRENT ADJUSTMENT :

\rrVM

INPUT

reacumcv
coumse

0 db 0 WWW
O C 62KHZ

ea
to em fie I
O 2) TO CASS PCB
CN207
a,
w W" 30457

AC BIAS FREQUENCY ALIGNMENT :
Note :The test Unit should he keep in recording mode and added two resistors Ra & Rb as Sh n in the
Fig. 2 beIore alignment. be Sure to delete the both resistors Fta & Rb after alignment Completed.

Test Point Adjust Frequency Frequency Observe at Observe
at Seat 0 Seat 1 Beat 2 Seat 0 Seat 1 Beat 2
Resistor
Ra or Ro L401 60 KHz:o.3K

GRUI'IDIG

RRCD 1300