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 !

Wednesday 13 February 2019

APEX - PF-2425 PF-2725 PF3235 SERVICE MODE AND ADJUSTMENTS FACTORY SET DATA VALUES

APEX - PF-2425 PF-2725 PF3235 SERVICE MODE AND ADJUSTMENTS Factory set Data Values

SUPPLY VOLTAGE ADJUSTMENT

  • Set AC power supply to 120 +/-2V.
  • Connect a digital voltmeter to two points of of [C845], and then turn ON the TV.
  • Receive a signal either by pattern generator or by RF input at the Ariel socket.
  • The Voltmeter should read 135 +/-0.5V.
SERVICE MODE AND BUS DATA
  1. Decrease the volume to minimum [0] with remote control.
  2. Press the 'Mute' button on the remote control and the 'Video' button on the TV at the same time.  "S" appears on the TV screen and TV enters Service mode.
  3. Press "Up | Dn and "-->" or "<--" button to adjust data.
  4. Press "Power" button on the remote control to Exit Service mode.
BUS DATA

MENU – 00

AFW: 240KHZ   -1

IF--PLL
1
AFA: INSIDE
1
AFB; BELOW
0
IFS
0
MOD
0
MENU - 01

FIXED AUDIO
1
SOUND MUTE
0
AUTO AUDIO LIMIT
0
VOLUME
12
MENU – 02

BLANK HOB
0
DE INTERLA
0
H SHIFT
SETO THE OPTIMAL MODE
H SHIFT-50
32
E/W WIDE
SET TO OPTIMAL MODE
PARABOLA
SET TO OPTIMAL MODE
E/W CORNER
SET TO OPTIMAL MODE
TRAPEZIUM
SET TO OPTIMAL MODE
OSD H POS
3
MENU – 03

VER MODE
0
VER OUT
0
OVERSCAN
1
VER PROTEC
0
BLANK FIX
0
V DIVIDER
0
MENU – 04

V CENTER
SET TO OPTIMAL MODE
V AMP
SET TO OPTIMAL MODE
S CORRECT
SET TO OPTIMAL MODE
V SHIFT
SET TO OPTIMAL MODE
V SHIFT-50
32
V ZOOM
25
V SCROLL
31
V HALF
0

MENU – 05

WHIT P RED
31
WHIT P GRE
SET TO OPTIMAL MODE
WHIT P BLU
SET TO OPTIMAL MODE
AKB
0
Y-DELAY
8
CATHOD LEV
5
MENU – 6

BLUE STRET
1
BLACK STRE
1
Y-VALUE
0
SKIN ANGLE
0
SKIN TONE
1
B.B LEVEL
40
MENU – 07

ACL
1
CB
1
CMB
0
BPS
0
MAT
0
OPT.AV3CH
1
OPT VM
1
OPT DCOM
1
OPT. BBK
1
MENU – 08

SUB BRIGHT
31
LOUDNESS
18
CNTRST MAX
63
CONTRST MID
32
CONTRST MIN
0
COLOR CORER
32
SUB TINT
32
MENU – 09

BCO
1
XA.XB
1
STB
1
POC
0
CM2.1.0
0
MENU – 10

VIM
1
STM
0
HCO
1
EVG
0
PRD
1
COR
1
MENU – 11

OSO
1
CSL.CSO
0
BB
1
AST
1
FFI
0
EBS
1
FCO
0
MENU – 12

OPT.OVPT
1
OPT.AV3
1
OPT.AV4
1
OPT.COLOR
0
OPT. V-CHIP
1
OPT.CCD
1
OPT.PWR-ON
1
SRCH SPEED
0
ROM CORREC
0
MSP/ YCbCR
1
#  The data sheet may differ dependent on different models.
## The data sheet may differ dependent on different CRTs for the same model
Posted By: FRANK at 02:10
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