Philips AA5-AA, 14PT135, 21PT136 Schematic
1PHILIPS AA5 (AA) Chassis
Recommended Safety Parts
Item Part No. Description
4822 256 92053 Fuse holder
4822 276 12597 Mains switch
4822 265 30389 2 pins male for degeussing
4822 265 40596 2 pins male for mains
4822 267 60243 21 pins euroconnector
1001 4822 210 10448 UV915E/IEC
1001 4822 210 10459 UV913/IEC
1001 4822 210 10464 U943C/IEC
1001 4822 210 10554 UV917/IEC
1500 4822 070 33152 3.15 A fuse
1540 4822 071 58001 800 mA fuse
1710 4822 071 52501 250 mA fuse
2015 4822 124 41525 100uF 20% 25V
2041 5322 126 10223 4.7nF 10% 63V
2043 5322 126 10223 4.7nF 10% 63V
2044 5322 126 10223 4.7nF 10% 63V
2080 5322 122 32654 22nF 10% 63V
2101 5322 126 10223 4.7nF 10% 63V
2117 5322 126 10223 4.7nF 10% 63V
2125 5322 122 32654 22nF 10% 63V
2151 4822 122 33177 10nF 20% 50V
2157 4822 124 41525 100uF 20% 25V
2157 5322 122 34123 1nF 10% 50V
2158 5322 126 10223 4.7nF 10% 63V
2170 4822 122 33177 10nF 20% 50V
2171 5322 126 10223 4.7nF 10% 63V
2261 4822 122 33177 10nF 20% 50V
2263 5322 122 32654 22nF 10% 63V
2264 4822 122 33177 10nE 20% 50V
2271 5322 122 32654 22nF10% 63V
2272 5322 122 34123 1nF l0% 50V
2273 5322 122 34123 1nF 10% 50V
2291 4822 122 33177 10nF 20%50V
2292 4822 122 33177 10nF 20%50V
2293 4822 122 33177 10nF 20% 50V
2350 5322 126 10223 4.7nF 10% 63V
2354 4822 122 33177 10nF 20% 50V
2366 5322 126 10223 4.7nF 10% 63V
2371 5322 122 32654 22nF 10% 63V
2445 4822 126 11503 820pF 10% 2KV
2445 4822 126 13435 1.2nF 10% 2KV
2446 4822 121 70457 8.2nF 5% 1.6KV
2446 4822 121 70523 12uF 5% 1.6KV
2448 4822 124 80096 47uF 200V
2450 4822 121 42365 330nF 5% 250V
2450 5322 121 44128 680nF 10% 250V
2500 4822 121 70285 470nF 10% 250V
2502 4822 126 11141 2.2nF 10% 1KV
2504 4822 126 11141 2.2nF 10% 1KV
2505 4822 124 42104 68kF 20% 385V
2506 4822 126 13503 3.3nF 20% 400V
2509 4822 126 11141 2.2nF 10% 1KV
2524 4822 126 11382 1nF 10% 1KV
2526 4822 122 32442 10nF 50V
2530 4822 124 80096 47kF 200V
2534 4822 126 11524 1.5nF 10%1KV
2552 4822 126 11382 1nF 10% 1KV
2660 5322 122 34123 1nF 10% 50V
2662 5322 126 10223 4.7nF 10% 63V
2663 5322 126 10223 4.7nF 10% 63V
2685 4822 124 41525 100uF 20% 25V
2686 5322 122 32654 22nF 10% 63V
2689 4822 122 33177 10nF 20% 50V
2750 4822 124 40433 47uF 20% 25V
2752 4822 124 40433 47uF 20% 25V
2860 5322 126 10223 4.7nF 10% 63V
3001 4822 052 10109 10 ohms 5% 0.33W
3001 4822 052 10229 22 ohms 5% 0.33W
3001 4822 052 10338 3 ohms 5% 0.33W
3007 4822 116 83953 75 ohms 5% 0.125W
3019 4822 051 20008 Jumper
3032 4822 051 20121 120 ohms 5% 0.1W
3124 4822 052 10109 10 ohms 5% 0.33W
3141 4822 051 10472 4k7 2% 0.25W
3257 4822 116 83953 75 ohms 35% 0.125W
3292 4822 051 10103 10k 2% 0.25W
3295 4822 051 10103 10k 2% 0.25W
3306 4822 051 20008 Jumper
3345 4822 052 11229 22 ohms 5% 0.5W
3345 4822 052 11471 47 ohms 5% 0.5W
3401 4822 052 11109 10 ohms 5% 0.5W
3408 4822 052 10222 2k2 5% 0.33W
3408 4822 053 10681 68 ohms 5% 1W
3411 4822 052 10228 2 ohms 2 5% 0.33W
3411 4822 052 10278 2 ohms 7 5% 0.33W
3411 4822 052 10338 3 ohms 3 5% 0.33W
3411 4822 052 10478 4 ohms 7 5% 0.33W
3412 4822 052 10228 2 ohms 2 5% 0.33W
3412 4822 052 10338 3 ohms 3 5% 0.33W
3415 4822 050 21802 1k8 1% 0.6W
3416 4822 050 21802 1k8 1% 0.6W
3419 4822 051 20008 Jumper
Recommended Safety Parts
Item Part No. Description
3448 4822 052 10108 1ohm 5% 0.33W
3448 4822 052 10109 10 ohms 5% 0.33W
3448 4822 052 11568 5 ohms 6 5% 0.5W
3449 4822 052 10108 1ohm 5% 0.33W
3452 4822 052 10108 1ohm 5% 0.33W
3452 4822 052 10478 4 ohms 7 5% 0.33W
3452 4822 052 11109 10 ohms 5% 0.5W
3454 4822 052 11102 1k 5% 0.5W
3470 4822 052 10478 4 ohms 7 5% 0.33W
3470 4822 052 10828 8 ohms 2 5% 0.33W
3501 4822 116 40137 PTC/PTC/36 ohms / 265V
3503 4822 053 21475 4M7 5% 0.5W
3504 4822 053 21475 4M7 5% 0.5W
3523 4822 050 24708 4 ohms 7 1% 0.6W
3533 4822 050 24703 47k 1% 0.6W
3544 4822 052 10108 1 ohm 5% 0.33W
3547 4822 050 21802 1k8 1% 0.6W
3554 4822 053 11689 68 ohm 5% 2W
3557 4822 053 11271 270 ohms 5% 2W
3617 4822 051 20472 4k7 5% 0.1W
3623 4822 051 10103 10k 2% 0.25W
5443 4822 157 51462 10uH10%
5445 4822 140 10406 Line output transformer
5453 4822 157 51462 10uH 10%
5454 4822 157 52688 Linearity coil AT4042/92
5470 4822 157 51462 10uH 10%
5500 4822 212 22978 Mains filter
5515 4822 157 50963 2.2kH 20%
5560 4822 157 51462 10uH 10%
5601 4822 157 51462 10uH 10%
6053 4822 130 30621 1N4148
6113 4822 130 30621 1N4148
6141 4822 130 30621 1N4148
6502 4822 130 31933 1N5061
6503 4822 130 31933 1N5061
6504 4822 130 31933 1N5061
6505 4822 130 31933 1N5061
6522 4822 130 30621 1N4148
6561 4822 130 81175 BYD74G
6658 4822 130 30621 1N4148
6663 4822 209 30563 TLXR5400 LED
6849 4822 130 30621 1N4148
7030 5322 130 41982 BC848B
7126 5322 130 41982 BC848B
7127 5322 130 41982 BC848B
7141 5322 130 41982 BC848B
7142 5322 130 41982 BC848B
7143 5322 130 41982 BC848B
7170 5322 130 41982 BC848B
7242 5322 130 41982 BC848B
7243 5322 130 41982 BC848B
7514 4822 130 91451 CQY80NG
7550 4822 130 41344 BC337
7561 4822 130 44197 BC558B
7571 5322 130 41982 BC848B
7640 5322 130 41982 BC848B
7654 5322 130 41982 BC848B
7665 5322 130 41982 BC848B
7670 5322 130 41982 BC848B
7672 5322 130 41982 BC848B
7674 5322 130 41982 BC848B
7686 5322 130 41982 BC848B
7710 5322 130 41982 BC848B
7711 5322 130 41982 BC848B
7713 5322 130 41982 BC848B
7715 5322 130 41982 BC848B
7732 5322 130 41982 BC848B
7750 4822 130 41344 BC337
7751 4822 130 41344 BC337
7754 5322 130 41982 BC848B
7755 5322 130 41982 BC848B
7856 5322 130 41982 BC848B
7858 5322 130 41982 BC848B
7875 5322 130 41982 BC848B
7876 5322 130 41982 BC848B
4822 255 70306 Holder valve mini neck
2282 5322 122 32654 22nF 10% 63V
3200 4822 052 10101 100 ohm 5% 0.33W
3235 4822 052 10108 1ohm 5% 0.33W
7206 5322 130 41982 BC848B
7219 5322 130 41982 BC848B
7228 5322 130 41982 BC848B
4822 255 70305 Holder valve narrow neck
1236 4822 071 55001 500mA fuse
1236 4822 071 51002 1 A fuse
3241 4822 052 10101 100 ohm 5% 0.33W
7235 5322 130 41982 BC848B
7240 4822 130 44197 BC558B
7245 5322 130 41982 BC848B
7255 5322 130 41982 BC848B
AT2079/40
Teletext Adjustments
Description diagram E
Teletext
There are 2 different executions for teletext
processing; a 1 page TXT execution by teletext
decoder IC7700 only or a 4 page TXT execution
by teletext decoder 107700 and extra microprocessor IC7702:
* 1 page TXT by teletext decoder IC7700;
For the 1 page teletext execution a 40 pins
SAA5254 VT 1.1 (VIP + ECCT + 1 k RAM
memory) teletext decoder is used with built-in 1k
RAM memory. This teletext decoder makes use
of the central microprocessor 107600 and is
controlled via the 120 bus (at pins 24-25
107700).
* 4 page TXT by teletext decoder IC7700 and
extra microprocessor IC7702;
For the 4 page teletext execution a 48 pins
SAA5281 VT 1.8 (VIP + ECOT +4k RAM
memory) teletext decoder with 4k built-in RAM
and an extra µC IC7702 is used. This µC is a
slave of the master µC IC7600 and controls the
extra featuring of WST, TOP and FLOE.
In both cases:
*CVBS-TXT signal is coming from the CVBSINT or CVBS-EXT (see IC7140 source select),
so teletext from both the antenna-signal and
from pin 20 of the scart can be displayed.
* Peaking filter C2736, L5734, R3734 and
R3755 is only present in scandinavian sets and
is used for peaking filter.
* RGB teletext info (R-TXT, B-TXT and G-TXT)
is directly fed to the video controller IC7015-60
on diagram D).
* The fast blanking signal from teletext (FBL
TXT) is added to all other fast blanking signals
(see diagram A). The total FAST BLANKING
signal is used for blanking and source select
control of IC7015-6D.
* NIL (Non Inter Lace) signal is fed to the frame
amplifier to switch the frame to 25Hz non
interlaced mode which is needed for teletext
displaying.
* CONTRAST signal is used to set a minimal
level of contrast in TXT mode.
* Supply voltages +50 and +50 supply the
teletext processing. These supply voltages are
derived from the +8T coming from the LOT.
In both cases 1 page and 4 page execution, the
teletext concept is of the so called VT type; this
means that the VIP and CCT are combined in
one VT teletext decoder.
General specification for both IVT decoders:
1. Suitable for processing the following teletext
signals:
- the “World System Teletext” (WST)
- the ‘UK’ page choice system; FLOF (Full Level
One Feature)
The teletext page is extended with a status
line which gives information about pages
coupled by the transmitter to the coloured
RO-buttons (FastText)
- the “german” choice system; TOP (Table Of
Pages) the teletext page is extended with a
status line which gives information about the
next information block and group.
2. For 4 page teletext execution the possibility to
store 4 pages:
- 1 display memory; for the page displayed on
the TV screen
- 3 background memories; for reducing the
waiting time
- the content of the 3 background memories
depends on the teletext system. Depending on the transmission the teletext
decoder selects one of the following possibilities:
* WST: page -1, page +1, page +2
* FLOF: 3 pages coupled to the coloured RO-
buttons (red/green/yellow)
* TOP: next group, next page and basic top
table
The main functions of both IVT teletext
decoders:
1. Analogue part for:
* Sync-separation
* Teletext data extraction
* Data clock regeneration
* Transfer of clock, data and composite sync
signals to the digital part
2. The sync-separator slicing level is adaptive so
that it can operate with a range of video
amplitudes and signal distortions
3. The data-slicer uses an adaptive signal
recognition and clock-phasing algorithm so
that it can operate with a wide range of clock
run-in amplitudes
4. Digital part for decoding of the world teletext
standards
* On board 4 pages memory (for 4 page teletext
execution only)
* Automatic detection of WST, FLOF or TOP
* Packet 26 flicker free character processing
Teletext
Electrical Adjustments
1. Adjustments on the main panel (Fig. 7.1)
1.1 +100V power supply voltage
Connect a voltmeter (DC) across C2530.
Adjust R3535 for a voltage of +100V (14 to 17”)
or +92V5 for 20-21” at a black picture (beam
current 0 mA).
1.2 Horizontal centring
Is adjusted with potentiometer R3354.
1.3 Picture height
Is adjusted with potentiometer R3410.
1.4 Vertical centring
Can be adjusted by eventually mounting one of
the resistors R3401 and/or R3408.
1.5 Focusing
Is adjusted with the focusing potentiometer in
the line output transformer.
1.6 IF filter (only for sets with SECAM LL’
reception possibility):
Connect a signal generator (e.g. PM5326) via a
capacitor of 5p6 to pin 17 of the tuner and
adjust the frequency for 40.4 MHz.
Connect an oscilloscope to pin 1 of filter 1015.
Switch on the set and select system Europe
(BG/L is “low” for BGIDK reception).
Adjust L5012 for a minimum amplitude.
1.7 AFC
a. For sets
with SECAM LL’ reception possibility:
Connect a signal generator (e.g. PM5326) as
indicated in point 1 .6. Connect a voltmeter to
pin 44 of IC7015/6A.
Adjust the frequency for 33.9 MHz and select
system France (L/L’ is “high” for L’ reception).
Adjust L5040 for 3V5 (DC).
Next adjust the frequency for 38.9 MHz and
select system Europe (L/L’ is “low” for BGIDK
reception). Adjust L5043 for 3V5 (DC).
b. For sets
without SECAM LL’ reception
possibility:
Connect a signal generator (e.g. PM5326) as
indicated above and adjust the frequency for
38.9 MHz (for PAL I at 39.5 MHz). Connect a
voltmeter to pin 44 of IC7015/6A. Adjust
L5040 for 3V5 (DC).
1.8 RF AGC
If the picture of a strong local transmitter is
reproduced distorted, adjust potentiometer
R3021 until the picture is undistorted.
Or: Connect a pattern generator (e.g. PM5518) to
the aerial input with RE signal amplitude =1 mV.
Connect a multimeter (DC) at pin 5 of tuner.
Adjust R3021 so that voltage at pin 5 of tuner is
7V5 ± 0V5 (DC).
2. Adjustments on the CRT panel (Fig. 7.2)
2.1 Vg2 cut-off points of picture tube
Apply a pattern generator (e.g PM551 8) and
set it to a white raster pattern.
Adjust contrast and Vg2 at minimum (Vg2 with
potentiometer in line output transformer to the
left). Adjust brightness until the DC voltage
across potentiometer 3213 is 0V.
Adjust R3207 (B), R3220 (G) and R3234 (R) for
a level of 115V on the collectors of transistors
7205, 7218 and 7227 (resp R3264 (B), R3274
(G) and R3302 (R) and T57265-7275-7285 for
20” narrow neck). Adjust Vg2 potentiometer until
the gun that first emits light is just no longer
visible. Adjust the two other guns with the
respective controls (3207, 3220 or 3234 or for
20” 3264, 3274 or 3302 for 20”) until just no light
will be visible.
2.2 Grey scale (white D)
Apply a test pattern signal and adjust the set for
normal operation. Allow the set to warm up for
about 10 minutes.
Adjust R3213 and R3214 (R3263 and R3273 for
20”) until the desired grey scale has been
obtained.
Main carrier (component side)
CRT panel mini neck 14-15-17-21”
CRT panel narrow neck 20”
Repair facilities
Functional blocks
On both the service printing on the copper and
the component side, functional blocks are
indicated by a line and text.
Test points
The AA5 chassis is equipped with test points in
the service printing on both sides of monoboard. These test points are referring to the
functional blocks as mentioned above:
P1-P2-P3, etc: Test points for the power supply
L1-L2-L3, etc: Test points for the line drive and
line output circuitry
E1-E2-E3, etc: Test points for the frame drive
and frame output circuitry
S1-S2-S3, etc: Test points for the synchronisation circuitry
V1-V2-V3, etc: Test points for the video
processing circuitry
A1-A2-A3, etc:Test points for the audio
processing circuitry
C1-C2-C3, etc: Test points for the control
circuitry
T1-T2-T3, etc: Test points for the teletext
processing circuitry
The numbering is done in a for diagnostics
logical sequence; always start diagnosing within
a functional block in the sequence of the
relevant test points for that functional block.
Teletext Diagram / Electrical Adjustments / Safety Parts / Repair Facilities / Repair Facilities Cont’d / CRT PCB (20” narrow neck)
Power Supply Diagram / Control Diagram / Video Audio CRT 14/15/17/21” mini neck Diagram / Teletext Diagram / Tuner IF Diagram
2PHILIPS AA5 (AA) Chassis
Repair facilities Cont’d
Service default mode (SDM)
The service default mode is a pre-defined mode
which can be used when for faultfinding
(especially when the TV gives no picture at all).
All oscillograms and DC voltages in this service
manual are measured in the service default
mode.
Entering the service default mode can be done
in 2 ways:
1. By short-circuiting the service pins Si and S2
of the microcomputer (pin 7 of 107600) while
switching on the set with the mains switch
2. From normal operation mode by pressing the
button “DEFAULT” on the DST (Dealer
Service Tool) RC7150.
Leaving the service default mode to normal
operation can only be done by the stand-by on
the remote control (so not via mains switch “off”;
after mains switch “off” and then “on” again the
set will start up in the Service Default Mode
again to enable easy faultfinding).
Functions of the service default mode
(see Fig 8.1):
1. All analog settings (volume, contrast,
brightness and saturation) are in the mid
position (in iC with Vi .0 the volume in the
SDM is set at 25%, from Vi .1 onwards the
volume in the SDM is set at 50%).
2. For VST sets are to program number 1
indicated in the right top corner
3. For PLL sets are tuned to 475.25 MHz
4. Delta volume settings are not used (delta
volume setting per program in reference with
the PP volume setting which is valid for all
programs)
5. OSD error message (present available error
code) is displayed continuously
6. Store open and store close commands will act
as search and auto store
7. Automatic switch off function (set switches
“off” after 15 minutes no DENT) will be
switched off
8. Hotel mode will be disabled
9. All other functions remain normal controllable
10.A counter in the middle of the screen indicate
the normal operation hours of the set in a
hexadecimal code (every time the set is
switched “on” the counter is incremented by 1
hour, so +i at the counter).
11. An “S” in the middle of the screen (next to
the counter) indicate that the set is in the
service default mode
Counter + “5” for SDM 0023 S 1
active + prog nr.
Fig. 8.1
Service Menu (SM)
Entering the service menu can be done in 2
ways:
1. From service default mode by simultaneously
pressing the buttons “-” and “+” buttons on the
local keyboard.
2. From normal operation mode by pressing the
button “ALIGN” on the DST RC7150.
Leaving the service menu to normal operation
can be done in 2 ways:
1. Via the stand-by on the remote control
2. Via mains switch “off”
→
For reading a new option setting, the set must
be switched “on” by the mains switch (so not by
stand-by as by then the EEPROM settings are
not read).
Functions of the service menu (see Fig 8.2);
1. Software version of the microprocessor used
in that typical set is displayed in the right top
corner
2. A counter in the middle of the screen indicate
the normal operation hours of the set in a
hexadecimal code (every time the set is
switched “on” the counter is incremented by i
hour, so+1 at the counter).
3. The “S” in the middle of the screen next to the
counter indicate that the set is in the service
default mode
4. Error code history; The 5 last different error
codes occurred are stored in the EEPROM
memory; last error code detected will be
displayed on the right side (see for an
overview of all possible error codes Fig. 8.4),
50 e.g.:
0 0 0 0 0
means no error codes present in the buffer
0 0 0 0 3
means one error code present in the buffer;
error code 3
0 0 0 3 2
means two error codes present in the buffer;
last detected error code is error code 2,
previous detected error code is error code 3
The error code history buffer is cleared as soon
as the Service Menu is left by the stand-by
command. In case the Service Menu is left by
the mains switch “off” the error code history
buffer will not be cleared.
Counter + “S” for SM 0023 S 1.0
→
active + software version
Error code history 0 0 0 3 2
Option setting bar - SYSTEM BG+l +
→
→
YNNYYNNNYYYN
Fig. 8.2
5. Option setting;
The options of the set can be changed in the
service menu. In the 2 bottom lines the options
are given. Control of the options is with the
following keys on the remote control:
* PROGRAM +/ Select the option to be changed;
Via the “PROGRAM +/-“ button to option to be
changed can be selected by scrolling through
the possible options in the upper row from left to
right (via the “PROGRAM +“ button) or from
right to left (via the “PROGRAM -“ button). The
selected option will be displayed in the upper
row, the present “Y” or “N” status of that option
(see table 8.3) will be blinking in the bottom row
(when arrived at the end of the row the scrolling
will be continued at the other side).
* MENU +/Change the selected option via “MENU +/-“
buttons the selected option can be changed.
The selected Y (yes) or N (no) blinks and via
either “MENU +“ or the “MENU you toggle
through the “Y” or “N” possibility.
The options (both the changed and the notchanged options) are stored in the EEPROM as
soon as the service menu is left (by stand-by or
mains switch “off”). The new option settings are
only read after mains switch “on” (so not after
switching on the set from stand-by mode).
The following table indicates the possible
options and there technical consequences:
Text displayed in In case the “N” or The technical consequence
the upper option row “Y” blinks, it can be for the selected option
in the service menu changed
SINGLE ➝ NN ➝ For a PAL BG only set
SYSTEM I ➝ NY ➝ For a PAL I only set
SYSTEM BG+L ➝ YN ➝ For a PAL BG + SECAM LL’ set
SYSTEM BG+L+l ➝ YY ➝ For a PAL BGI or PAL EGOKI + SECAM LL’ set
PLL TUNER N ➝ For a VST tuner set
NO TXT ➝ NN ➝ For a set without teletext
1P TXT ➝ NY ➝ For a set with 1 page WST teletext
4P TXT ➝ YN ➝ For a set with 4 page FLOF teletext
16/9 SWITCH N ➝ Disable 16/9 switching possibility
S-VIDEO N ➝ For a set without SVHS connectors
SCART N ➝ For a set without a scart connector
SHARPNESS N ➝ Disable sharpness control
LOCAL MENU N ➝ No ring menu after pressing
40 PROGRAMS N ➝ 70 programs can be stored
SLEEPTIMER N ➝ Disable sleeptimer function
FOR GERMANY N ➝ Disable ATS function
ONLY Y ➝ Enable ATS function only works when ATS software is present)
Y ➝ For a PLL tuner set
Y ➝ Enable 16/9 switching possibility
Y ➝ For a set with SVHS connectors
Y ➝ For a set with a scart connector
Note: The SCART option can only be
changed when the S-VIDEO option is “N”
Y ➝ Enable sharpness control
Y “MENU” on the local keyboard
➝ Ring menu after pressing “MENU” on the local keyboard
Y ➝ 40 programs can be stored
Y ➝ Enable sleeptimer function
Fig. 8.3
Error messages
The microcomputer also detects errors in
circuits connected to the I ~ (Inter IC) bus.
These error messages are communicated via
OSD (On Screen Display) and a flashing LED
both in normal operation and in the service
menu (error code history buffer):
1. In normal operation;
In normal operation both the “OSD error
message” and the “LED error” indication will
display the present detected error. The displaying of both the OSD and the LED error indication will only take a limited time.
2. In the service default mode;
In the service default mode both the “OSD error
Reset volume/program (delta volume) for all
programs at once
It is also possible to leave the service menu with
the MENU button. After one time pressing the
MENU button in the service menu, a new menu
is entered (see Fig. 8.5) in which the volume/
programs-settings (also called delta volume
settings) of nil. programs can be deleted. In
case YES is selected via the MENU+ button, all
volume/program-settings are deleted at once.
After another time pressing the MENU button
the TV will switch to normal operation (when the
service menu is entered via the pins Si and S2)
or service default mode (when the service menu
is entered with the DST).
message” and the “LED error” indication will
display the present detected error. In the service
default mode both the OSD and the LED error
indication will be displayed permanently.
3. In the service menu;
In the service menu both the “OSD error
number” (in the error code history) and the “LED
error” indication will display the present detected
error. In the service default mode both the OSD
and the LED error indication will be displayed
continuously.
“OSD error “OSD “LED error” Error Possible
message” error “on/off” in SEC description defective
normal number” component
operation) (service menu)
No indication 0 No blinking LED No error —
ERROR: RAM 1 1 sec on / 1 sec kC error 1C7600
off
ERROR: BUS 2 2 sec on / 2 sec General 12C1
oft blocked
ERROR: 3 3 sec on / 3 sec EEPROM error 1C7655
EEPROM oft
ERROR: 4 4 sec on I 4 sec Teletext error 1C770017702 or
TELETEXT oft option wrong
ERROR: 5 5 sec on / 5 sec PLL tuner error PLL tuner or
TUNER oft option wrong
Counter +“S” for SM 0023 S 1.0
active + software
version
Error code history 0 0 0 3 2
Reset all volume - RESET VOL/PROG +
NO YES
Fig. 8.5
2
C bus is
Fig. 8.4
Hotel mode
* Hotel mode “on”
The hotel is activated when pressing simultaneously the “MENU” button on the local
keyboard and the “SLEEPTIMER or OSD”
button on the remote control while program 38
is selected for at least 3 seconds.
When the hotel mode is activated, this is
indicated by a “H+” on the OSD (this will be
displayed until the set is switched of by the
mains switch or via stand-by).
* Hotel mode “off”
Repeat above mentioned procedure once
again. When the hotel mode is de-activated,
this is indicated by a “H-” on the OSD (this will
CRT PCB
(20”narrow neck)
Diagram
be displayed until the set is switched of by the
mains switch or via stand-by).
* Functions of the hotel mode
- The volume present on the moment the hotel
mode was switched “on” is the maximum
volume level in the hotel mode.
- The install mode can not be opened (the
message “LOCKED” will be displayed for 3
seconds if a store open command is given).
- The delta volume menu can not be entered.
- PP (personal preference) can not be stored
(the message “LOCKED” will be displayed for
3 seconds if a PP-store command is given).
- At switch “on” (by mains switch or remote
control) program number 1 will always be
selected.
Teletext Diagram / Electrical Adjustments / Safety Parts / Repair Facilities / Repair Facilities Cont’d / CRT PCB (20” narrow neck)
Power Supply Diagram / Control Diagram / Video Audio CRT 14/15/17/21” mini neck Diagram / Teletext Diagram / Tuner IF Diagram
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