Orion COMBI 2612 User manual

SERVICE
MANUAL
ORION
COMBI
2612
/
2612SI
COLOR TELEVISION/VIDEO CASSETTE RECORDER
ORIGINAL
CHASSIS CODE B
vis
Best. Nr. SM2612
Design and specifications are subject to change without notice.

As for the places which need special attentions,
they are indicated with the labels or seals on the
cabinet, chassis and parts. Make sure to keep the
indications and notices in the operation manual.
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
electric shock while the electric current is
flowing.
. USE THE DESIGNATED PARTS
The parts in this equipment have the specific
characters of incombustibility and withstand
voltage for safety. Therefore, the part which is
replaced should be used the part which has
the same character.
Especially as to the important parts for safety
which is indicated in the circuit diagram or the
table of parts as a /\ mark, the designated
parts must be used.
. PUT PARTS AND WIRES IN THE
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING
There are parts which use the insulation
material such as a tube or tape for safety, or
which are assembled in the condition that
these do not contact with the printed board.
The inside wiring is designed not to get closer
to the pyrogenic parts and high voltage parts.
Therefore, put these parts in the original
positions.
TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
In the condition that an explosion-proof cathode-
ray tube is set in this equipment, safety is
secured against implosion. However, when
removing it or serving from backward, it is
dangerous to give a shock. Take enough care to
deal with it.
SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES
6. AVOID AN X-RAY
Safety is secured against an X-ray by consider-
ing about the cathode-ray tube and the high
voltage peripheral circuit, etc.
Therefore, when repairing the high voltage pe-
ripheral circuit, use the designated parts and
make sure not modify the circuit.
Repairing except indicates causes rising of high
voltage, and it emits an X-ray from the cathode-
ray tube.
. PERFORM A SAFETY CHECK AFTER
SERVICING
Confirm that the screws, parts and wiring which
were removed in order to service are put in the
original positions, or whether there are the
portions which are deteriorated around the
serviced places serviced or not. Check the
insulation between the antenna terminal or
external metal and the AC cord plug blades.
And be sure the safety of that.
(INSULATION CHECK PROCEDURE)
1. Unplug the plug from the AC outlet.
2. Remove the antenna terminal on TV and turn
on the TV.
3. Insulation resistance between the cord plug
terminals and the eternal exposure meta!
[Note 2] should be more than 1M ohm by
using the 500V insulation resistance meter
[Note 1].
. lf the insulation resistance is less than 1M
ohm, the inspection repair should be
required.
[Note 1]
If you have not the S0OV insulation
resistance meter, use a Tester.
{Note 2]
External exposure metal: Antenna terminal
Earphone jack
HOW TO ORDER PARTS
Please include the following informations when you order parts. (Particularly the CHASSIS CODE.)
1. MODEL NUMBER and CHASSIS CODE
You can find it in the back of your unit.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
IN CASE OF VIDEO TAPE JAM |
1. Remove the Deck Chassis from the main unit.
(Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.)
2. Rotate the Middle Gear in the direction of the arrow by hand. Then take
out the Video Tape. Be careful not to scratch on the tape.

CONTENTS
SERVICING NOTICES ON CHECKING... cscccsessscesseseseseensensenseecseesraseaseseassnssssensseesssensenees A1-1
HOW TO ORDER PARTS aa
IN
CASE
OF
VIDEO
TAPE
JAM
........ccccscsssseseeseseneennenseecnssessesaeeseenenereecaensessseaserevaecensrcenaenas
At-1
CONTENTS.
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A2-1
GENERAL
SPECIFICATIONS
0...
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A3-1~A3-4
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS...
2. REMOVAL OF DECK PARTS uu... eessccsssessssescssseessenecaessesnsacsasnecssessenessettersersaeresenaneatscasansans
3. REMOVAL OF ANODE CAP 2... ccscescesssssseeeersecensesseeseecsenssaesansnarsanaeenerecsevaesaesesnenssnsenenacs
4, REMOVAL OF DEFLECTION YOKE .........ccssscescesseesessesseesessnnseenassenaseaneaeneescesscesnnsssassaoaees
5. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC
KEY TO ABBREVIATIONS
SERVICE MODE LIST ou... ccc cseccsecsseeseceseceessscnscsesssssnsessernsessenersessnenssserasaserensssaecesesesessenerease
PREVENTIVE CHECKS AND SERVICE INTERVALS
WHEN REPLACING EEPROM (MEMORY) IC
SERVICING FIXTURES AND TOOLS
MECHANICAL ADJUSTMENTS occ eseccccsscesesssseesennensenesaearererseasseesensenassensensesneensesesenaenaes
_ ELECTRICAL ADJUSTMENTS.........csssscssessssssessnessneesnssensessarennteraretarecaneennensnesnnennneneneese
BLOCK DIAGRAMS
POWER/OPERATION....
PRINTED CIRCUIT BOARDS
MAIN/CRT
SYSCON/21PIN/DECK
SYSCON/21PIN ....csscssscsecssecsscessarsesneesseseseesusecsesensesesaprensvesessessscanesesananenssvesasocorasesansavaseasroarqneses F-5, F-6
SCHEMATIC DIAGRAMS
Y/C/AUDIO/HEAD AMP. .......esescessecsessesssceceesssscesseneseeaeenenssecaessasassaesensenssaeesatenseseesensasnensnaney G-1, G-2
MICON uo. secsseeseseeneaeeees
POWER/OPERATION
CHROMA svccicscscssccsvsscontenavs sasonconcesssauseensosentevsperisasnosidcavansests ets pedeeadedessedsetesvrstenedcoss
SOUND AMP .....0...:ccssscsscosessssssrssssscersavscssesceoreasenteseesenscssensaseacnsssaserssssnesesneassoessessassoesenseereseess
TTX: hassncsteccdvccsvsestesessedsodSeasbsivacesunnaicoasecadeduodssastesnsisorsnedevsedersestueconaeersesceuyecbnvecemestecsorates G-11, G-12
21PIN/IN/OUT.. G-13, G-14
TV POWER ....cccssssssccesssccecsassoenersesoessessnssscvscsssensosossussonsoeusussucsscensensansencacenssaesonenensesssonesenonenecees G-15, G-16
DEFLECTION . G-17, G-18
GR isccecadncacdscevecnccnwcs shvaeieetuabecivcvesstivccabeeasnncauscubbsoscteiestencsaphduiavesee sesnesesbs cade canesauvatenseptestasvavecdeeus G-19, G-20
DECK ...ccsssssocssssssncessssrecsstsecsscscssusessnsnsacsssoccssonvupscosssensscusrsacsansesesossanancassnenesaceasenesesseseesaaseneersses G-21, G-22
INTERCONNECTION DIAGRAM ........ccscsecsesceseesrssesseresescssseccastensecrscnonasensenseeneneestecentenseneniees G-23, G-24
WAVEFORMS
MECHANICAL EXPLODED VIEWS.
CHASSIS EXPLODED VIEWS occ cscesccceessseneseeenessscensnseneenessaensspaceseeseseaenessnaseneteesnaeaenenae
MECHANICAL REPLACEMENT PARTS LIST
CHASSIS REPLACEMENT PARTS LIST ...........c:ccsesssesseenecseeetsecnessenersecsesennseassesereeapenseensasenes J2-1
ELECTRICAL REPLACEMENT PARTS LIST
A2-1

GENERAL SPECIFICATIONS
CRT Size / Visual Size 10 inch / 222.8mmV
CRT Type
Normal
Deflection
90 degree
Magnetic Field BV/BH
+0.45G/0.18G
Color System
PAL
Speaker
1Speaker
Position
Side
Size
3 inch
Impedance
8 ohm
Sound Output
System
MAX
10%(Typical)
Player / Recorder
Video System
PAL
Hi-Fi STEREO
No
NTSC PB
Yes
Deck
DECK
Loading System
Motor
OVD-6S
Front
3
Video Head 2 Head
FM Audio Head No
Audio /Control Mono / Yes
Erase(Full Track Erase) Yes
Tape Rec
Speed
PAL
NTSC
SP
Play
PAL
NTSC
SP
SP
Fast Forward / Rewind Time (Approx.) at+250C
Forward/Reverse
Picture Search
Frame Advance
Slow Speed
Broadcasting System
Tuner and
Receive CH
Intermediate
Frequency
Cassette
NTSC or PAL-M
PAL or SECAM
FF:1'48"/REW:1'48"
at E-180
SP=3x,5x
SP=5x,7x
1/10
1/5~1/30
CCIR System B/G
System
1Tuner
Destination
CCIR Hyper
Tuning System
Input Impedance
VHF/UHF 75 ohm
CH Coverage
Picture(FP)
Sound(FS)
FP-FS
Preset CH
E5~E12,$11~S41,E21~E69
Stereo/Dual TV Sound
Video Signal
input Level 1
V p-p/75 ohm
Output Level
1 V p-p/75 ohm
S/N Ratio (Weighted)
53 dB
Horizontal Resolution at SP Mode
240 Lines
Audio Signal
Input Level
-3.8dBm/50Kohm
Output Level
-3.8dBm/1Kohm
S/N Ratio at SP
42 dB
Harmonic Distortion at SP_(1KHz)
Typical
1.5 %
Frequency Response
at SP
100Hz ~10kKHz
at LP
at SLP
Hi-Fi Audio Signal
Power Source
Dynamic Range : More than
Wow And Flutter : Less than
Channel Separation : More than
Harmonic Distortion : Less than
230V SOHz
12V
Power Consumption
Stand by (at AC)
Per Year
50 W at 230V 50 Hz
50 W at12V
6W at 230 V 50 Hz
Protector
Menu
Power Fuse
Dew Sensor
Safety
Radiation
X-Radiation
Operation
Storage
Type
A3-1
+5°C ~ +40°C
20°C ~_ +60"
: Less then 80% RH
j Yes
Character
E2~E4, X~Z+2, S$1~S10,

GENERAL SPECIFICATIONS
ATS No
Timer Rec Set Yes
Channel Setup 4 Yes
Auto Tuning Yes
Ch Mapping No
Ch Tuning Yes
Ch Allocation Yes
TV Setup Yes
On/Off Timer Set Yes
Picture Yes
Audio No
VCR Setup No
Auto Repeat On/Off Yes
System Select No
Scene Repeat No
System Setup Yes
Clock Set Yes (Calendar 24h)
Language Yes
G-CODE(or SHOWVIEW or PLUSCODE)No. Entry No
Stereo/Audio Output No
Bilingal No
NICAM No
Clock/Date Yes
CH/AV | Yes
Tape Counter(Linear Counter) 4 Yes
Tape Speed \ No
Sleep Time Yes
Control Volume Yes
Level Bright / Contrast / Sharpness/ Color Yes
Tint No
Bass/Treble/Balance No
Manual Tracking Yes
Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause/EjectTape In (Symbol Mark; Yes
Auto Tracking/Manual Tracking : Yes
S-Repeat/SR-R/SR-PLAY i No
Index Yes
Mute Yes
Hi-Fi No
Repeat Yes
Zero Return No
Dew Yes
G-11
Clock,
Timer
Calendar
1990/1/1
~
2081/12/31
and Timer Timer Events 8 prog/ 1. month
Back-up One Touch Recording Max Time SP 5 Hours
OTPB Valid Time -
Sleep Timer Max Time 120 min.
Step i 10 min.
On/Off Timer Program{On Tim / Off Tim) | 1 prog.
Auto Shut Off No Signal 15 min.
No Operation - i
Timer Back-up (at Power Off Mode) 30
G-12 Remote Unit RC-CH
Control Glow in Dark Remocon No
Power Source Voltage(D.C) 3V
UM size x pcs UM-4 x 2 pcs
Total Keys 36 Keys
Keys Power Yes
1 Yes
2 Yes
3 Yes
4 | Yes
5 Yes
6 Yes
7 Yes
8 H Yes
9 Yes
O/AV Yes
CH/Tr Up No
CH/Tr Up/Page Up Yes
CH/Tr Down No
CH/Tr Down /Page Down Yes
Volume Up Yes
Votume Down Yes
Play/Up No
Play/Up/Slow Yes
F.Fwd/Right Yes
A3-2

G-14
Features
Accessories
GENERAL SPECIFICATIONS
Rew/Left Yes
Pause/Still Yes
Pause No
Stop/Down Yes
Rec/OTR Yes
Eject Yes
Counter Reset Yes
Speed No
Timer Rec Yes
TV Monitor i Yes
TV Monitor /Rec Monitor a No
Program Yes
Program V+ i No
Auto Tracking ‘ No
Auto Tracking /Reveal i Yes
Menu \ Yes
Enter i No
Enter/Hold | Yes
Cancel/Ch Skip No
Cancel/Ch Skip/F-T-B Yes
Index No
Index /Sub Page Yes
Calt Yes
TexvMix/TV Yes
Sleep Timer Yes
Mute Yes
Zero Return Yes
CM Skip No
OTPB i No
END Call Ele No
Red No
Cyan i No
Green No
Yellow No
‘Audio Select No
Auto Head Cleaning
Auto Tracking
HQ (VHS Standard High Quality)
Auto Power On, Auto Play, Auto Rewind, Auto Eject
Auto Shut Off
Auto Repeat
VIDEO PLUS+(SHOWVIEW,G-CODE)
CH Auto Set-Up/Auto Clock
Forward / Reverse Picture Search
One Touch Playback
Auto Tuning
Anti-Theft
End Call
Index Search
SQPB
CATV
CM Skip(30sec x 6 Times)
Comb Filter
T'Text
Text type!
Yes
UniText
Scene Repeat
No
Hotel Lock
No
TV Monitor
Zero Return
Choke Coil
Power On Memory
Owner's Manual Language | German
w/Guarantee Card Yes
Remote Control Unit Yes
Rod Antenna Yes
Poles 2pole
Terminal DIN type
w/300 ohm to 75 ohm Antenna Adapter Yes
Loop Antenna No
Terminai -
UN Mixer No
DC Car Cord (Center+) Yes
Guarantee Card No
Warning Sheet No
Circuit Diagram No
Antenna Change Plug ' No
Service Facility List i No
A3-3

Interface
Set Size
eal ass
GENERAL SPECIFICATIONS
important Safeguard No
Dew/AHC Caution Sheet No
AC Plug Adapter No
Quick Set-up Sheet Yes
Battery Yes
UM size x pcs UM-4 x 2 pcs
OEM Brand No
AC Cord No
AV Cord (2Pin-1Pin) No
21pin-RCA Cable No
Registration Card No
PTB Sheet | No
Anti-Theft Sheet No
Euro Warranty Information Sheet
Switch Power
No
Play
Pause/Stili
System Select
One Touch Playback
Channel Up
Channel Down
F.FWD/Cue
Eject/Stop
Main Power SW
Volume Up
Volume Down
Rew/Rev
Main Power SW
Rec/OTR \
Indicator Standby i
Rec/OTR Red
T-Rec |
On Timer
cs
Rec/OTR
One Touch Playback
Play
Key Light up
Red
Red
pre EE 1s eee aes
No
No
No
No
No
Terminals Front Video Input
Audio Input
Other Terminal
Rear Video Input
Audio Input
Video Output
RCA x1
RCA x1
Head Phone(Stereo & Mono, 3.5mm)
No
No
No
Audio Output
Euro Scart
N
1-SCART
Diversity
Ext Speaker
DC Jack 12V(Center +)
Yes
VHF/UHF Antenna Input ;
DIN type
AC Inlet i
Approx. WxDxH (mm):
Net (Approx.)
Gross (Approx.)
Master Carton
No
278 x 312.5 x 311.5
8.8 kg ( - Ibs)
10.5 kg - Ibs
Content
Material
Dimensions Wx Dx H(mm)
Description of Origin
Yes
Material
Double/Full Color
Dimensions WxDxH(mm)
338 x 381 x 386
Design
As per Buyer's
Description of Origin
No
Drop Test
1 Corner / 3 Edges / 6 Surfaces
Height (cm)
Natural Dropping Ati
62
Container Stuffing(40' container)
1256 Sets
G-19 Cabinet Material Cabinet Front j PS 94HB
Cabinet Rear PS 94HB
Jack Panel PS 94HB
A3-4

DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1: BACK CABINET (Refer to Fig. 1-1)
1. Remove the 4 screws ©.
2. Remove the 2 screws @.
3. Remove the 2 screws @ which are used for holding the
Back Cabinet.
4, Remove the AC cord from the AC cord hook @.
5. Remove the Back Cabinet in the direction of arrow.
Front Cabinet
Back Cabinet
Fig. 1-1
1-2: CRT PCB (Refer to Fig. 1-2)
CAUTION: BEFORE REMOVING THE ANODE CAP,
DISCHARGE ELECTRICITY BECAUSE IT
CONTAINS HIGH VOLTAGE.
BEFORE ATTEMPTING TO REMOVE OR
REPAIR ANY PCB, UNPLUG THE POWER
CORD FROM THE AC SOURCE.
1. Remove the Anode Cap.
(Refer to REMOVAL OF ANODE CAP)
2. Disconnect the following connectors:
(CP801 and CP850).
3. Remove the CRT PCB in the direction of arrow.
Front Cabinet
1-3: TV/VCR BLOCK (Refer to Fig. 1-3)
1. Remove the 2 screws @.
2. Disconnect the following connectors:
(CP351, CP401, CP403 and CP501).
3. Unlock the support @.
4. Remove the TV/VCR Block in the direction of arrow.
Front Cabinet
TVNVCR Block
1-4: MAIN PCB (Refer to Fig. 1-4)
1, Remove the screw ©.
2. Remove the Main PCB Holder.
3. Remove the 2 screws @).
4, Remove the screw @.
5. Disconnect the following connectors:
(CP502 and CP820).
6. Remove the Main PCB in the direction of arrow.
VCR Block

DISASSEMBLY INSTRUCTIONS
1-5: DECK SHIELD PLATE (Refer to Fig. 1-5)
1. Remove the 2 screws (.
2. Remove the 4 screws @.
3. Remove the screw ©).
4. Remove the Deck Shieid Plate in the direction of arrow (A).
5. Remove the screw @.
6. Remove the Shield Plate Bottom in the direction of arrow (B).
Deck Chassis
Deck Shield Plate
1-7: JACK PLATE, 21PIN PCB AND SYSCON PCB
(Refer to Fig. 1-7)
1. Remove the screw ©.
2. Remove the Syscon PCB in the direction of arrow (A).
3. Remove the 2 screws @,
4. Unlock the 2 supports @.
5. Remove the Jack Plate and 21Pin PCB in the direction
of arrow (B).
Jack Plate
Shield Plate Bottom
Syscon PCB
1-6: DECK CHASSIS (Refer to Fig. 1-6)
1. Remove the 3 screws ©.
2. Disconnect the following connectors:
(CP1001, CP1004, CP1005, CP1006, CP4001, CP4004
CP4005, CP4503 and CP4504).
3. Remove the Deck Chassis in the direction of arrow.
Deck Holder
B1-2

DISASSEMBLY INSTRUCTIONS
NOTE
When you install the Tape Guide L, install as shown in the
circle of Fig. 2-3-B. (Refer to Fig. 2-3-B)
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
1, Remove the 2 screws ©.
2. Slide the 2 supports @ and remove the Top Bracket.
NOTE
When you install the Top Bracket, install the screw (1)
first, then install the screw (2).
¢ Screw Torque: 5 + 0.5kgfecm
2-2: FLAP LEVER/TAPE GUIDE R (Refer to Fig. 2-2)
1. Move the Cassette Holder Ass'y to the back side.
2. Remove the Polyslider Washer ©®.
3. Remove the Flap Lever.
4. Unlock the 3 supports @ and remove the Tape Guide R.
Main Chassis
2-3: TAPE GUIDE L (Refer to Fig. 2-3-A)
1. Move the Cassette Holder Ass'y to the back side.
2, Unlock the 2 supports @ and remove the Tape Guide L.
3. Remove the REC Lever. (Recorder only)
Tape Guide L
Main Chassis
* The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-A
B2-1
REC Lever
* The REC Lever is not installed on the Video casas Player, Fig. 9-3-B
2-4: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-4)
1. Move the Cassette Holder Ass'y to the front side so that
the Link Ass'y doesn't slip out.
2. Push the Locker R to remove the Cassette Side R.
3. Remove the Cassette Side L.
Main Chassis
Main Chassis
Fig. 2-4
2-5: CASSETTE SIDE L/R (Refer to Fig. 2-5)
1. Unlock the 4 supports @ and then remove the Cassette
Side L/R.
2, Remove the Cassette Earth Spring.
NOTE
1. When you install the Cassette Side R, be sure to move
the Locker R after installing.
2. After the installation of the Cassette Holder, then install
the Cassette Earth Spring.
Cassette Holder
Cassette Side R
Cassette Side L
Cassette Earth Spring
Fig. 2-5