REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday, 16 February 2019

GRUNDIG - DAVIO 21 - DAVIO 20 - SERVICE MODE ADJUSTMENTS

GRUNDIG - DAVIO 21 - DAVIO 20 - SERVICE MODE ADJUSTMENTS

TO ENTER SERVICE MODE
  • Start of Service Mode:  Via "i" => Service Code "8500".
  • Call up Menu:  Button "P + | P - " => OK.
  • Adjustments:  Button  " < | > " bzw. 1/3, 4/6.
  • Break of Menu:  Button "i".
  • End of Service Mode:  Button "TXT".
ATS RESET
Hold " --" button (minus) on the TV set depressed while switching the set to standby with the remote control.  -->Menu "Language" appears at the next "switch On".
CHANGE OF THE IC 101 or IC103
  • After changing any of these ICs, all settings in the service mode must be checked  and if necessary be done according to the Table given below.
HOTEL MODE
  • Maximum volume is limited and there is no access to "preset list" and "Channel Settings" at activated hotel mode.
  • Call up "I" => "8500" => P+ | P- 'Options' => "OK" => P+ | P- 'Simple hotel' => < | > "ON".
  • Maximum volume:  "I" => '8500' => P+ \ P- 'Options' => 'OK' => P+ | P- 'Max Vol' =>  < | > value 0 ..... 63.
Menu [P+/P-]+OK
Point of Menu [P+ / P-]
Adjustment [ < / > ]
Hint
Davio 21 T55-4501 TEXT
Davio 21 T555-4501/5 TEXT
Davio 20 t51-4501 text
OPTIONS
TUNER
Temic
Panasonic D44G3.
Sharp or Alps.
Philips.
Panasonic DB2G3.
Depending on mounting
30
30
30

AGC - UHF
VALUE

30
30
30

AGC - VHF
VALUE

30
30
30

AGC
VALUE

20
20
20

TYPE
ATS

X
X
X


LABEL





SANDBY
CUSTOMER MODE

X
X
X


FACTORY MODE





AV1 SVHS
ON

X
X
X


OFF





SOUND
BG

X

X


I






BG+DK


X



BG+LL





BG
EUROPE

X
X
X


NEW ZELLAND






AUSTRALIA





TEXT
FASTTEXT

X
X
X


NON-TEXT





ON TIMER
ON






OFF

X
X
X

FRONT KEY
INT.PV -+






IINT.-PV+

X
X
X


EXT.PV -+






EXT.-PV+






EXT.4 KEY





BLUE BACK
ON

X
X
X


OFF





CHILD LOCK
ON

X
X
X


OFF





ZAPP
ON

X
X
X


OFF




OPTIONS
RC TYPE
TP751C
Depending on RC





TP160C

X
X
X

SIMLE HOTEL
ON






OFF

X
X
X

MAX VOL
VALUE
Max volume in hotel mode
32
32
32

RGB IN
IN

X
X
X


OFF




GEOMETRY
VERT AMPLITUDE
VALUE

03
03
03

VERT.SHIFT
VALUE

33
33
33

VERT.SLOPE
VALUE

32
32
32

S-CORRECTION
VALUE

30
30
30

HOR.SHIFT
VALUE

34
34
34

VER.AMP.16:9
VALUE

12
12
12

YC DELAY PAL
VALUE
Do not change
07
07
07

YC DELAY SECAM
VALUE
Do not change
07
07
07

YC DELAY NTSC
VALUE
Do not change
07
07
07

HOR OSD POS.
VALUE

37
37
37

VER OSD POS.
VALAUE

04
04
04

OSD CON
VALUE

06
06
06

TXT CON
VALUE

00
00
00

TXT BRI
VALUE
Do not change
30
30
30

PWL
VALUE
Do not change
08
08
08

CATH.DRV.LEV
VALUE
Do not change
10
10
10

VERTICAL GUARD
VALUE
Do not change
00
00
00

PROTECTION
VALUE
Do not change
04
04
04
VIDEO
BLACK LEVEL R
VALUE

27
27
27

BLACK LEVEL G
VALUE

32
32
32

WHITE POINT R
VALUE

32
32
32

WHITE POINT B
VALUE

32
32
32

SCREEN ADJ
VALUE

00
00
00
Posted By: FRANK at 01:51
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