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UMS1
Service Manual
36 pgs1.77 Mb0
Service manual
54 pgs3.08 Mb0

Grundig UMS1, UMS2 Service Manual

Service Information Bulletins
1997
Table of Contents
Audio / Hifi
RR 3500 CD, RR 650 CD
UMS1, UMS2
R14 DPL5
CD 436, CD 437, CD 11, CD 12, CD-IR, M30 CD
RCD400, UMS2
TV / Sat
Chassis Digi Basic, e.g. ST 70-255 IDTV/LOG, M 70-280 IDTV/LOG, SE 7089 IDTV/LOG
Chassis Digi Basic (CUC 1825, 1826), Digi Basic+ (CUC 1827) and Digi 6 (CUC 1952, 1983, 1984)
TVR 3701 SV
Chassis CUC 7301 text, e.g. P 37-730 text
Chassis CUC 7303 and 7305, e.g. P 37-071, T 51-720 text, T 55-731 text
Chassis CUC 7350, e.g. ST 55-750 text
Chassis CUC 7300, e.g. P 37-740 SAT, and all sets retrofitted with
the built-in Satellite Receiver SER 7300
Chassis Digi Basic CUC 1825, 1826 and 1827 - e.g. ST 63-255 IDTV/LOG,
M 70-281 IDTV/LOG, SE 7089 IDTV/LOG
Chassis Digi 6 - CUC 1952, 1983, 1984 and built-in Satellite Receiver
SER 150/SER 150 ET - e.g. Denver SE 8216/9 Ref./PIP, M 82-269/9 Reference
Mono-TV-Recorders TVR 3710, 5100 and 5500
Serial no. 10/97............................................................................................................................. 17
Chassis Digi IV - CUC 1821/1851/1881/1892 and 1981
e.g. M 70-781 IDTV, M 70-791 IDTV, M 82-102 IDTV, M 95-102 IDTV, M 82-169 PALplus
Serial no. 11/97 ............................................................................................................................. 18
Colour television receivers with 82/70 cm Toshiba picture tube and chassis Digi 6 -
e.g. M 82-269/9 Ref, SE 8216/9 Ref/PIP, M 70-269/9 Ref, SE 7016/9 Ref/PIP Trento
Colour television receivers with chassis Digi Basic CUC 1805/1825/1826 and 1827
e.g. ST 63-255 IDTV/LOG, ST 72-261 IDTV/LOG, Boston SE 7090 IDTV/LOG
Serial no. 12/97............................................................................................................................. 19
2
Chassis CUC 7301/7301F, e.g. P 37-070, T 51-730 text, T 55-730/5 text Chassis Digi 6 - CUC 1952, 1983, 1984 and built-in Satellite Receiver SER 150/SER 150 ET
e.g. Denver SE 8216/9 Ref./PIP, M 82-269/9 Reference
Serial no. 13/97............................................................................................................................. 20
Chassis CUC 7303 e.g. P 37-731 text, P 45-731 text, T 55-731 text Chassis CUC 7303/7305/7350 and CRT panels 29305-022.16/-022.17, e.g. P 37-731 text,
P 45-731 text, T 55-731 text, P 37-731/12 text, ST 55-750 text, XS 55/1, Lissabon SE 5576 text
Serial no. 14/97............................................................................................................................. 21
Chassis Digi 6 - CUC 1842, 1894, 1952, 1962 and 1983
e.g. M 72-410 Ref., Denver SE 8216/9 PAL Plus, M 70-269/9 Ref.
Serial no. 15/97............................................................................................................................. 22
Chassis Digi Basic and Digi 6 - CUC 1805, 1825, 1826, 1827, 1828, 1842,
1894, 1952, 1962 and 1983, e.g. M 72-410 Ref., Denver SE 8216/9 PAL Plus, M 70-269/9 Ref
Serial no. 16/97............................................................................................................................. 23
Chassis Digi Basic - CUC 1806, 1825, 1826, 1827, 1829, 1830 with CRT panels
29305-122.04/10/12/17 z.B. ST 70-255 IDTV/LOG, ST 72-261 IDTV/LOG, Atlanta SE 7220 IDTV/LOG, ST 72-261 IDTV/LOG
Serial no. 17/97............................................................................................................................. 24
CTV sets ST 72-261 IDTV/LOG and ST 72-261/8 IDTV/LOG with Toshiba picture tube
Serial no. 18/97............................................................................................................................. 25
Satellite Receivers STR 631/632/641/642
Serial no. 19/97............................................................................................................................. 26
Colour television receivers MW 70-100/8, M 72-100 and M 72-100/8
Serial no. 20/97............................................................................................................................. 27
Video
Series GV 4xx video recorders with “ World Deck “
GV 560HIFI
GV 6096 SV
Series GV 4xx video recorders with “ World Deck “
GV 6096 SV
GV 660 / GV 690
GV 5xx and GV 6xx range of video recorders
GV 403, 407, 411/1, 411/2, 417, 437, 4001, 4002VPS, 4003VPS.
GV 7400 HIFI and variants, SE 7105 HIFI
3
SERVICE INFORMATION
Product:
RR 3500 CD, RR 650 CD
RR 3500 CD, RR 650 CD
Possible complaint:
The working distance of the remote control handset is too short (<2m).
Reason:
Reverse connection of the collector and emitter of the transistor Q 901 ( remote control RC CD).
Cure:
Exchange the remote control or connect the transistor terminals correctly.
Workshop:
Check all available remote control handsets for a working range of about 4.5m and exchange or repair them where necessary.
Audio No 1/97
Stores:
Remote control handset for RR 3500 CD / RR 650 CD, part no. 75954-046.34.
Technical Services / Information
8002 / 8012 5407700000
SERVICE INFORMATION
Product: Audio No.
UMS1, UMS2
2/97
UMS1, UMS2
Possible complaint:
No playback at all or distorted playback of a CD.
Reason:
Reversed polarity of capacitors C222 and C223 (1µF, 50V).
Cure:
Solder in new capacitors C222 and C223 (1µF, 50V) with the negative terminal
connected to IC 07 and the positive terminal to R220 or R221. Please note that the polarity of the capacitors as shown in the Service Manual is reversed.
Workshop:
Check the polarity of C222 and C223 in each system coming in for repair and change the capacitors if necessary. Please correct the polarity of the capacitors C222 and C223 on page 3-15 of your Service Manual.
Stores:
None
Technical Services / Information
8002/8012
5403700000
Service Information
Product
R14 DPL
VDE Safety Compliance - R14 DPL
To ensure that the R14 DPL receivers with the listed serial numbers are in compliance with these safety regulations, a lead for intensifying the chassis connection of these receivers must be connected additionally on the transformer circuit board.
For this, press the wire lead which is soldered on the copper side between P2 and the transformer TR1 towards the upper edge of the circuit board (pin 2 is the 4th pin in the top row from the edge of the circuit board). Secure the lead in this position at 3 points, one in the middle and two at a distance of about 1cm each from the solder pad, using a heat-setting adhesive.
Alternatively, this wire lead may also be removed from the copper side and reconnected on the component side. Corresponding holes are already provided.
This change is to be carried out in all receivers with the serial numbers listed below.
8002 8051 8100 8367 8397 8709 9146 8007 8056 8102 8368 8399 8714 9147 8012 8064 8105 8369 8400 8732 9151 8013 8066 8135 8370 8401 8734 9158 8014 8067 8158 8371 8402 8735 9159 8015 8074 8172 8372 8403 8736 9160 8017 8075 8177 8373 8404 8737 9161 8018 8076 8181 8374 8405 8760 9162 8019 8078 8203 8375 8406 8772 9164 8020 8079 8204 8376 8407 8799 9165 8021 8080 8207 8377 8413 8859 9166 8022 8082 8208 8378 8431 8896 9167 8023 8083 8211 8379 8535 8949 9168 8024 8084 8218 8380 8561 9032 9169 8025 8085 8219 8381 8594 9057 9173 8027 8086 8223 8382 8633 9069 9174 8028 8087 8226 8383 8636 9076 9175 8029 8088 8281 8384 8637 9079 9180 8030 8089 8282 8385 8638 9080 9181 8031 8090 8304 8386 8639 9088 9183 8032 8091 8327 8387 8641 9090 9184 8033 8092 8354 8388 8652 9095 9197 8034 8093 8356 8389 8674 9097 9230 8036 8094 8358 8390 8682 9131 9231 8038 8095 8360 8391 8684 9132 9240 8040 8096 8363 8393 8686 9134 9252 8041 8098 8365 8394 8704 9137 9265 8043 8099 8366 8395 8707 9142 9266
Audio/HiFi
Serial No. 3/97
54277000, 8002/8012
Central After-Sales Service
1/1
Service Information
Product
CD 436, CD 437, CD 11, CD 12, CD-IR, M30 CD
Possible complaint:
Smoke comes out of the player, capacitors are charred.
Reason:
The electric strength of the capacitors C 354, C 355, C 356, C 357 is too low (2.2nF). These capacitors are connected in parallel with the diodes in the secondary-side rectifier.
Cure:
Change the capacitors C 354, C 355, C 356, C 357 to versions with an electric strength of 50V/22nF.
Workshop:
Generally check the electric strength of the capacitors C 354, C 355, C 356, C 357 in above mentioned players and change them if necessary.
Stores:
None
Central
Audio/HiFi
Serial No. 4/97
54287000, 8002/8012
After-Sales Service
1/1
Service Information
Product
RCD 400, UMS 2
Possible complaint:
Faulty radio text.
Reason:
Tolerance limit of the RDS quartz Q3 is too high.
Cure:
Replace the RDS quartz by a version available under part number 8382-170-433.
Workshop:
On request.
Stores:
Quartz 4.332 MHz, part number 8382-170-433.
Central
Audio/HiFi
Serial No. 5/97
54207000, 8002/8012
After-Sales Service
1/1
SERVICE INFORMATION
Product:
TV's with Digi Basic chassis
Television No. 1/97
Colour television receivers with Digi Basic chassis, e.g. ST 70-255 IDTV/LOG, M 70-280 IDTV/LOG, SE 7089 IDTV/LOG
Possible complaint:
Brown colouration of the circuit board near the diode D 60222 BZT 03D180. Simultaneously the "+Eco" voltage is approx. 5V too high.
Reason:
Coincidence of unfavourable component tolerances.
Cure:
Carry out the following changes in the stand-by mains stage:
- Change the Z-diode D 60203 from ZPD 9.1V to 8.2V.
- Change R 60202 from 68 kΩ to 1 kΩ.
- Connect an additional Z-diode ZPD 13 in series with R 60202. Connect the cathode of the diode to the base of the transistor CT 60206.
- Check the rating of the resistor CR 60203 to be 2.2 kΩ.
Workshop:
Check the "+Eco" voltage. Carry out the changes if this voltage is higher than +17 V.
SI60201
T100mA
3456
330
R60222
F
C60224
12
D60208
D60207
P
C60201
1,5n
C60202
+
1u/63V
1N4001
1N4001
R60201
F
CD60201
CD60202
LS4148
1k
LS4148
CR60202
1k
CT60213
BC858B
100
R60213
D60202
ZPD13/2%
CC60203
CR60203
D60203
R60207
P
100p
2,2k
ZPD8,2V
4,7
5
CT60206
+
C60204
CR60206
1k
BC858C
10u/50V
P
CT60203
BC848B
4
CR60208
CR60214
4,7k
CD60223
components to be
Bauteile die zusätzlich
added or changed
einzubauen oder zu ändern sind.
68
3
LS4148
2,7M
R60211
2,7M
R60212
220K
CR60223
C60221
T60223 BUZ90A
G
F
R60221
D
S
6
n.V.
3,9n
D60222
330
D60221
2
n.V.
1
BZT03D180
n.V.
BA159
D60224
BYT54K
C60226
R60224
100k
10n/1000V
7
TR60220
100p/FKP1/1,6kV
D61001 BYT53B
M
Stores:
Z-diode ZPD 8.2 V part no. 8309-720-083 Z-diode ZPD 13 V part no. 8309-720-131
SMD resistor 1 kΩ part no. 8706-100-473
Technical Services / Information
8002/8012
S1/52067S0297
SERVICE INFORMA TION
TVR 3701 SV 2/97
Television No.Product:
Portable mono TV/VCR combination TVR 3701 SV
Possible complaint:
Mains voltage dependent chirp audible in stand-by mode.
Cure:
Fit an additional transistor stage as shown below into the power supply unit at IC 7310 (MC 44603 P).
2 3
4
6
CURRENT SENSE
THERMAL SHUTDOWN
Buffer
Vref
Vcc
OVERVOLTAGE MANAGEMENT
IC 7310
CURRENT SENSE INPUT
7
3359
MC 44603P
330
fit these components additionally
Dmax & SOFT-SART
CONTROL
2320
2,2 µ
diese Bauteile zusätzlich einbauen
Workshop:
Carry out when complaints are received.
Stores:
Diode BAT 85 part no. 8309-198-085
11
UVLO1
Vref
BC 548 B
BAT 85
100 pF
4,7 kΩ
1 kΩ
Technical Services / Information
8002/8012 52067S0397
SERVICE INFORMA TION
CUC 7301 3/97
Television No.Product:
37 cm colour television receivers with chassis CUC 7301 text e.g.: P 37-730 text
Possible complaint:
Teletext operation is not possible in “AV” programme position.
Reason:
The video switch-IC 2807 (TEA 2114) is not fitted in 37 cm television receivers.
Cure:
Retrofit the following components: IC 2807 TEA 2114
C 2815 1 µF C 2810 100 µF C 2811 0.1 µF CR 2813 270 Ω CR 2814 270 Ω In addition, change the polarity of 2.2 µF electrolytic capacitor C 2816 (negative terminal to
pin 8 of IC 2810) and remove bridge BR␣ 056.
BR 056
+
C2810
4
3
8
100u/25V
0dB
0dB
TEA 2114
6dB
7
CC2811
1
IC 2807
0,1u
2
6
CR2813
5
CR2814
270
34 33 32 31 30 29 28
270
+
C2816
M
R
CC2810
G
2,2u/100V
2,2n
19 18171615
B
BLANK
IC 2810 SAA 5254 P/E
1312
BR009
3736
RGB-REF
2524 2322 21
11
OSC IN
OSC OUT
32
1
6
272635
10 20
4
5 14 38
M
39
98 7
40
FBAS
+
C2815
1u/100V
SC
FBAS
EURO-AV
VQ
U
CR2807
H
SYNC
47k
V
SYNC
Workshop:
Carry out when complaints are received. The circuit board is already prepared to be fitted with these components.
Stores:
IC TEA 2114 part no. 8305-362-114
Electrolytic capacitor 1 µF/100 V part no. 8452-967-325 Electrolytic capacitor 100 µF/25 V part no. 8452-967-135 Capacitor 0.1 µF part no. 8555-267-173 SMD resistor 270 Ω part no. 8706-297-059
Technical Services / Information 8002/8012 52097S0497
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