akira VCR-S607 User manual

Video Cassette Recorder
Service Manual

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Model No.: VCR-S607
Version: 1.0
MODEL:
VCR-S607

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Model No.: VCR-S607
Version: 1.0
CONTENTS
IMPORTANT SERVICE GUIDE............................................................................................................. 4
PRECAUTIONS ...................................................................................................................................... 6
ALIGNMENT & ADJUSTMENT ........................................................................................................... 9
CABINET ASSEMBLY......................................................................................................................... 15
ELECTRCAL PART LIST..................................................................................................................... 20
BLOCK DIAGRAM .............................................................................................................................. 34
S.M.P.S. .................................................................................................................................................. 37
POWER DRIVE..................................................................................................................................... 38
SYSTEM CONTROL/ SERVO /DISPLAY ........................................................................................... 39
AUDIO /VIDEO..................................................................................................................................... 40
HI-FI (OPTION)..................................................................................................................................... 41
TM.......................................................................................................................................................... 42
A2 /NICAM............................................................................................................................................ 43
INPUT-OUTPUT ................................................................................................................................... 44
SUB ........................................................................................................................................................ 45

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Model No.: VCR-S607
Version: 1.0
IMPORTANT SERVICE GUIDE
MODE SWITCH (PROGRAM SWITCH) ASSEMBLY POINT
1) When installing the ass’y deck on the Main PCB, be sure to align the assembly point of mode
switch.
HOW TO EJECT THE CASSETTE TAPE
(If the tape is stuck in the unit)
1 Turn the Gear Worm clockwise in the direction of arrow with screwdriver. (See Fig. 2)
(Other method ; Remove the screw of Motor Load Ass’y, Separate the Motor Load Ass’y)
2 When Slider S, T are approaches the unloading position, rotate holder Clutch counter clockwise
after inserting screwdriver in the frame’s bottom hole in order to wind the unwound tape. (Refer to
Fig. 3)
3 (If you rotate Gear Worm continuously when tape is unwinding, you may cause tape contamination
by grease and tape damage. Be sure to wind the unwound tape with the unit in the horizontal
position.)
4 Rotate Gear Worm clockwise using a screwdriver until the mecha is in the eject state. Remove the
tape. (Refer to Fig. 2)

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Model No.: VCR-S607
Version: 1.0

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Model No.: VCR-S607
Version: 1.0
PRECAUTIONS
1. Be sure that all of the built-in protective devices are replaced. Restore any missing protective
shields.
2. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including:
control knobs and compartment covers.
3. Make sure that there are no cabinet openings through which people--particularly children --might
insert fingers and contact dangerous voltages. Such openings include the spacing between the
picture tube and the cabinet mask, excessively wide cabinet ventilation slots, and improperly fitted
back covers.
If the measured resistance is less than 1.0 megohm or greater than 5.2 megohms, an abnormality
exists that must be corrected before the unit is returned to the customer.
4 Leakage Current Hot Check (See Fig. 1-1):
Warning : Do not use an isolation transformer during this test. Use a leakage current tester or a
metering system that complies with American National Standards Institute (ANSI C101.1, Leakage
Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7).
5 With the unit completely reassembled, plug the AC line cord directly the power outlet. With the
unit’s AC switch first in the ON position and then OFF, measure the current between a known earth
ground (metal water pipe, conduit, etc.) and all exposed metal parts, including: antennas, handle
brackets, metal cabinets, screw heads and control shafts. The current measured should not exceed
0.5 milliamp. Reverse the power-plug prongs in the AC outlet and repeat the test.
6 X-ray Limits:
The picture tube is designed to prohibit X-ray emissions. To ensure continued X-ray protection,
replace the picture tube only with one that is the same type as the original.
7 Antenna Cold Check:
With the unit’s AC plug disconnected from the AC source, connect an electrical jumper across the
two AC prongs. Connect one lead of the ohmmeter to an AC prong. Connect the other lead to the
coaxial connector.
8 High Voltage Limit:
High voltage must be measured each time servicing is done on the B+, horizontal deflection or high
voltage circuits. Heed the high voltage limits. These include the X-ray protection Specifications
Label, and the Product Safety and X-ray Warning Note on the service data schematic.
9. Some semiconductor (“solid state”) devices are easily damaged by static electricity. Such
components are called Electrostatically Sensitive Devices (ESDs); examples include integrated
circuits and some field-effect transistors. The following techniques will reduce the occurrence of
component damage caused by static electricity.
10. Immediately before handling any semiconductor components or assemblies, drain the electrostatic
charge from your body by touching a known earth ground. Alternatively, wear a discharging
Wrist-strap device. (Be sure to remove it prior to applying power--this is an electric shock
precaution.)

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Model No.: VCR-S607
Version: 1.0
11. High voltage is maintained within specified limits by close-tolerance, safety-related components and
adjustments. If the high voltage exceeds the specified limits, check each of the special components.
12. Design Alteration Warning:
Never alter or add to the mechanical or electrical design of this unit. Example: Do not add auxiliary
audio or video connectors. Such alterations might create a safety hazard. Also, any design changes or
additions will void the manufacturer’s warranty.
13. Hot Chassis Warning:
Some TV receiver chassis are electrically connected directly to one conductor of the AC power cord.
If an isolation transformer is not used, these units may be safely serviced only if the AC power plug
is inserted so that the chassis is connected to the ground side of the AC source.
To confirm that the AC power plug is inserted correctly, do the following: Using an AC voltmeter,
measure the voltage between the chassis and a known earth ground. If the reading is greater than
1.0V, remove the AC power plug, reverse its polarity and reinsert. Re-measure the voltage between
the chassis and ground.
14. Some TV chassis are designed to operate with 85 volts AC between chassis and ground, regardless
of the AC plug polarity. These units can be safely serviced only if an isolation transformer inserted
between the receiver and the power source.
15 Never defeat any of the B+ voltage interlocks. Do not apply AC power to the unit (or any of its
assemblies) unless all solid-state heat sinks are correctly installed.
16 Always connect a test instrument’s ground lead to the instrument chassis ground before connecting
the positive lead; always remove the instrument’s ground lead last.

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Model No.: VCR-S607
Version: 1.0
17 Observe the original lead dress, especially near the following areas: Antenna wiring, sharp edges,
and especially the AC and high voltage power supplies. Always inspect for pinched, out of place, or
frayed wiring. Do not change the spacing between components and the printed circuit board. Check
the AC power cord for damage. Make sure that leads and components do not touch thermally hot
parts.
18 Picture Tube Implosion Warning:
The picture tube in this receiver employs “integral implosion” protection. To ensure continued
implosion protection, make sure that the replacement picture tube is the same as the original.
19 Do not remove, install or handle the picture tube without first putting on shatterproof goggles
equipped with side shields. Never handle the picture tube by its neck. Some “in-line” picture tubes
are equipped with a permanently attached deflection yoke; do not try to remove such “permanently
attached” yokes from the picture tube.
20 Product Safety Notice:
Some electrical and mechanical parts have special safety-related characteristics which might not be
obvious from visual inspection. These safety features and the protection they give might be lost if the
replacement component differs from the original--even if the replacement is rated for higher voltage,
wattage, etc.
Components that are critical for safety are indicated in the circuit diagram by shading, ( or ).
Use replacement components that have the same ratings, especially for flame resistance and
dielectric strength specifications. A replacement part that does not have the same safety
characteristics as the original might create shock, fire or other hazards.

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Model No.: VCR-S607
Version: 1.0
ALIGNMENT AND ADJUSTMENT
Reference
1 X-Point (Tracking center) adjustment, “Head switching adjustment” and “NVRAM option setting”
can be adjusted with remote control.
2 When replacing the Micom (IC601) and NVRAM (IC605 ; EEPROM) be sure to adjust the “Head
switching adjustment” and “NVRAM option setting”.
3 When replacing the cylinder ass’y, be sure to adjust the “X-Point” and “Head switching
adjustment”.
4 Among Samsung VCR remote control used for adjustment as a accessory, only the remote control
that has figures buttons (0 ~ 9) is available for all adjustment regardless of chassis.
5 How to adjust.
a. Press the “TEST” button on F-AV PCB/Main PCB/Function PCB to set the adjustment mode.
b. If the corresponding adjustment button is pressed, the adjustment is performed automatically.
c. When the adjustment is completed, be sure to turn the power off.

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Model No.: VCR-S607
Version: 1.0
Location of adjustment button of remote control

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Model No.: VCR-S607
Version: 1.0
SW718 location for adjustment mode setting

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Model No.: VCR-S607
Version: 1.0
Mechanical Adjustment
Note : Refer to the Mechanical Manual “TS-10A (AC82-00023A)” for the adjustment and confirmation
of ass’y full deck.
The number and position of test point

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Model No.: VCR-S607
Version: 1.0
ACE Head Position (X-Point) Adjustment
(See the ACE Head Position (X-Point) Adjustment on the Mechanical Manual)
1 Playback the alignment tape (Color bar).
2 Press the “TEST” button on Main PCB to set the adjustment mode. (See Fig. 2-2)
3 Press the “5” button of remote control then adjustment is operated automatically. (See Fig. 2-1)
4 Connect the CH-1 probe to TP301 (Envelope) the CH-2 probe to TP602 (H’D switching pulse) and
then trigger to CH-1.
5 Insert the (-) driver into the X-Point adjustment hole and adjust it so that envelope waveform is
maximum.
6 Turn the Power off.
Head Switching Point Adjustment
1. Playback the alignment tape.
2. Press the “TEST” button on Main PCB to set the adjustment mode. (See Fig. 2-2)
3. Press the “SPEED” button of remote control then adjustment is operated automatically. (See Fig.
2-1)
4. Turn the Power off.
NVRAM Option Setting
1. NVRAM Option is a adjusted in the factory.
2. In case Micom (IC601) and NVRAM (IC605 ; EEPROM) are replaced, be sure to set the
corresponding option number of the repaired model. (If the option is not set, the unit will not
operate.)
1. Press the “TEST” button on Main PCB to set the adjustment mode. (See Fig. 2-2)
2. Press the “MENU” button on the remote control about 5 seconds then option setting display is
appeared. (See Fig. 2-4)
3. Select the option number (See Table 2-1) of corresponding model with “CURSOR” button on the
remote control.
4. After selecting the option number is completed, press the “OK” button of remote control.
(If “OK” button is pressed, the selected number is changes color; See Fig. 2-4)
5. Press the “MENU” button of remote control again to store the option number.
(“PLEASE WAIT” is displayed for a second as shown Fig. 2-5 and this setting is completed.)
6. Turn the Power off.

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Model No.: VCR-S607
Version: 1.0
<Table 2-1 NVRAM Option Number>
Models Option Numbers
VCR-S607(S) 6, 7, 8, 9, 10, 15, 15, 20, 22, 25, 27, 29, 35, 38, 42, 47, 52, 55, 56, 57, 60,
61, 64

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Model No.: VCR-S607
Version: 1.0
CABINET ASSEMBLY

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Model No.: VCR-S607
Version: 1.0
Loc. No Parts No. Description; Specification Remark
1 Refer to table below ASSY-PANEL FRONT;
21 Refer to table below DOOR-CASSETTE;
22 AC61-62032A SPRING ETC-MASK; SV-C130, SUS,4.4,-,-,-,-,
101 Refer to table below CABINET-TOP;
153 AC60-12126A SCREW-BH; -, -,FE, FZY, BH,-,-,4*12,-,-
153 AC60-12131A SCREW-TAP TITE BH;-,-,-,FE,-,3X10,-,-,FZ
157 AC60-10063A SCREW-TAPTITE; -,-,L12,ZPC3,+,-,M3,-,SWRC
200 AC39-10019A CBF POWER CORD; KKP-419C, H03VVH2-F, VDE/KE
CN3A1S 3809-001206 CABLE-FLAT; 30V, -20to+80C, 140mm, 6P, 1.25mm
LD601A AC61-21009A HOLDER-LED; X-9, POM(M90-44),-,-,-,BLK,-
S602A AC61-00229A HOLDER-SENSOR; SCORPIO2, POM,-,-,-,BLACK,-
TM401B Refer to table below CHASSIS-ASSY;
UT01 Refer to table below REMOCON-ASS’Y;
MODELS 1 21 101 TM401B UT01
VCR-S607S AC97-01492T AC64-00805T AC64-01054D AC61-00233A AC59-00071A

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Model No.: VCR-S607
Version: 1.0

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Model No.: VCR-S607
Version: 1.0
Loc. No Parts No. Description; Specification Remark
B410 AC31-00018A MOTOR-LOADING ASSY; -, SCORPIO2 (TS-10A), -,
B440 AC60-10515A SCREW-MACHINE; -, -, M3, L3, PH, +, -, -, ZPC,-
B448 AC66-00008A GEAR-WORM WHEEL; TS-10, POM, 0.8, 40, -, NAT, 3
B452 AC66-00011A GEAR-FL CAM; TS-10, POM, 0.8, 59, -, BLK, 48.48
B473 AC61-00105A SPRING ETC-PINCH DRIVE; TS-10, SUS304-WPB,
B474 AC61-30180A PLATE-JOINT; X-9, SECC20/20,T0.8, -, -, -, -
B475 AC47-00003A DAMPER-CAPSTAN; SCORPIO2, POM, NATUAL, -, -,
B561 3809-001270 CABLE-FLAT; 30V, 80C, 140MM, 10P, 1.25MM, UL28
G001 AC97-02038A ASSY-CYLINDER; PAL, 6H’D, CTS9-SEM (6P), SEM
G060 6006-001092 SCREW-ASS’Y MACH; WS, PH, +, M3.0, L6.0, ZPC (Y
G070 AC61-00161A PLATE-GROUND DECK; TS-10, SPTE, T0.3, -, -, -,
G420 AC66-80142A SLIDER-SUPPLY ASSY; X-9, SUS, -, -, -, SIL, -
G450 AC66-80141A SLIDER-TAKE UP ASSY; X-9, SUS, -, -, -, SIL, -
G480 AC97-01660A ASSY-HEAD ACE; -, SCORPIO2 (TS-10A), VTR-1*2
G510 6006-001075 SCREW-ASS’Y TAPT; WSP, PH, +, M2.6, L5.0, ZPC
G520 AC66-00074A LEVER-GUIDE (#9); TS-9, PPS, -, -, -, -, BLK, KHA
G527 AC61-60553A SPRING ETC-GUIDE 9; X-9, SUS304-WPB, 0.25, -
G530 AC33-00007A HEAD-FE; -, -, HVFHPOO43A ,- ,-
G546 AC66-00005A LEVER-FL DOOR; TS-10, POM, -, -, -, -, NAT,-
G555 AC97-02293A ASSY-UNIT PINCH; SECC+SUS304, TS-10, FOR X-
G560 AC61-00122A POST-#8 GUIDE ASS’Y; TS-10, POM+SUS 303,-,
G680 AC66-00046A LEVER-HEAD CLEANER ASS’Y; TS-10, POM+URETH (OPTIONAL)
G681 AC61-50686A SLEEVE-HEAD CLEANER; -, POM, -, -, -, -, -, -, TS (OPTIONAL)
K110 AC66-10267A REEL-DISK S; X-9, POM, -, -, -, -, -, -
K140 AC66-10268A REEL-DISK T; X-9, POM, -, -, -, -, -, -
K182 AC66-30524A LEVER-IDLER; -, POM, -, -, -, -, BLK, -
K188 AC66-00039A GEAR-IDLE; TS-10, PET K3372, 0.5, -, -, NTR, 28
K240 AC66-00035A LEVER-TENSION ASS’Y; TS-10, SECC E20/20+SU
K248 AC61-00107A SPRING ETC-TENSION LEVER; TS-10, SUS304-WP
K250 AC69-00104A BAND-BRAKE ASS’Y; TS-10, -, -, -, -, -, -
K330 AC66-30550A LEVER-S.BRAKE ASSY; -, POM+SUS, -, -, -, X-9
K340 AC66-30549A LEVER-T.BRAKE ASSY; -, POM+SUS, -, -, -, X-9
K350 AC61-00106A SPRING ETC-BRAKE; TS-10, SUS304-WPB, -, -, -,
K470 AC66-00020A SLIDER-FL DRIVE; TS-10, SECC, T1.0, -, -, SIL
K490 AC61-00120A HOLDER-FL CASS. ASS’Y; TS-10, -, -, -, -, -, -
K502 AC61-60561A SPRING ETC-FL.LEVER-LR; X-9, SUS304 WPB, OD
K530 AC66-00034A LEVER-FL ARM ASS’Y; TS-10, -, -, -, -, -, -, -
K546 AC61-50658A GUIDE-CASS. DOOR; X-9, POM, -, -, -, NTR

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Model No.: VCR-S607
Version: 1.0
Loc. No Parts No. Description; Specification Remark
B456 AC66-00009A GEAR-JOINT 1; TS-10, POM, 1.5, 17.5(22), -, NA
B458 AC66-00012A GEAR-JOINT 2; TS-10, POM, 1.0, 23, -, BLK, 24.6
B460 AC61-00090A BRACKET-GEAR; TS-10, SECC E20/20, T0.8, W280
B462 AC60-10517A SCREW-TAP TITE; -, -, M2.6, L5, PH, +, -, -, ZPC,
B464 AC66-00019A SLIDER-CAM; TS-10, SECC, T1.2, -, -, SIL, -
B468 AC66-00017A LEVER-PINCH DRIVE; TS-10, SECC E20/20, 1.0
B478 AC66-00016A LEVER-TENSION DRIVE; TS-10, SECC E20/20, 1
B484 AC66-00030A GEAR-LOADING DR. ASS’Y; TS-10, POM+SWPB, -,
B488 AC66-00023A LEVER-S LOADING; TS-10, POM, -, -, -, -, NAT, -
B489 AC66-00021A LINK-LOADING S; TS-10, SECC E20/20, 0.8, -, -
B500 AC66-00024A LEVER-T LOADING; TS-10, POM, -, -, -, -, NAT, -
B501 AC66-00022A LINK-LOADING T; TS-10, SECC E20/20, 0.8, -, -
B560 AC31-00016A MOTOR-CAPSTAN; F2QVB05, SCORPIO2 (TS-10A), -
B570 AC60-10514A SCREW-CAPSTAN; -, -, M2.6, L6, PH, +, -, -, -, -
G542 AC66-60051A BELT-PULLEY; -, 5CM-70, 2 * 2, -, 71.3, -, X-9
K200 AC61-21012A HOLDER-CLUTCH ASSY; X-9, ABS, -, -, -, BLK, -
K221 AC66-20581A GEAR-CENTER ASSY; X-9, POM, M=O.5, -, -, GRY, -
K222 AC60-30306A FASTENER-WASHER SLIT; -, -, ID2.1, OD5.0, T0.
K225 AC66-00006A LEVER-UP DOWN; TS-10, POM, -, -, -, -, NAT, -

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Model No.: VCR-S607
Version: 1.0
ELECTRICAL PART LIST
Loc.No Part No Description; Specification Remark
- - ASSY PCB-MAIN; S.N.A
S.M.P.S PARTS
BD1SD2 AC27-92001M COIL-INDUCTOR;RH3.5X6.5RS,BEAD(RADIAL),-
BD1SD3 AC27-92001M COIL-INDUCTOR;RH3.5X6.5RS,BEAD(RADIAL),-
BD1SS1 AC27-92001M COIL-INDUCTOR;RH3.5X6.5RS,BEAD(RADIAL),-
BD1SS2 AC27-92001M COIL-INDUCTOR;RH3.5X6.5RS,BEAD(RADIAL),-
C1SD03 2201-000812 C-CERAMIC,DISC;2.2NF,20%,400V,Y5U,BK,12.
C1SD04 2201-000812 C-CERAMIC,DISC;2.2NF,20%,400V,Y5U,BK,12.
C1SD11 2401-003303 C-AL;82uF,20%,400V,GP,BK,22X30,10
C1SD12 2305-001029 C-FILM,LEAD-PEF;10nF,10%,630V,TP,12x9x12
C1SF11 2305-001029 C-FILM,LEAD-PEF;10nF,10%,630V,TP,12x9x12
C1SF12 2401-000598 C-AL;1uF,20%,50V,GP,TP,4x7,5
C1SF13 2301-000415 C-FILM,LEAD-PEF;22nF,5%,50V,TP,6.5x10.5x
C1SF14 2401-001200 C-AL;33UF,20%,50V,WT,TP,6.3X11,2.5
C1SF15 2401-001728 C-AL;10uF,20%,35V,GP,TP,5x7,5
C1SS01 2305-001021 C-FILM,LEAD-PEF;100nF,20%,275V,TP,17.5x7
C1SS02 2305-001021 C-FILM,LEAD-PEF;100nF,20%,275V,TP,17.5x7
C1SS12 2201-000129 C-CERAMIC,DISC;0.1NF,10%,1KV,Y5P,TP,7X4M
C1SS31 2401-000385 C-AL;10uF,20%,100V,GP,TP,6.3x11,5
C1SS32 2401-003137 C-AL;330UF,20%,50V,WT,TP,10X16MM,5
C1SS33 2401-003477 C-AL;330UF,20%,25V,LZ,TP,10X12.5MM,
C1SS34 2401-003477 C-AL;330UF,20%,25V,LZ,TP,10X12.5MM,
C1SS35 2401-003480 C-AL;1000UF,20%,10V,LZ,TP,10X16MM,5
C1SS36 2401-000118 C-AL;1000uF,20%,10V,GP,TP,10x12.5,5
C1SS39 2301-000129 C-FILM,LEAD-PEF;100nF,5%,50V,TP,10X9X4.3
CN1SS1 3711-000178 CONNECTOR-HEADER;1WALL,2P,1R,3.96mm,STRA
D1SD10 0402-001195 DIODE-RECTIFIER;F1T4,400V,1.0A,TS-1,TP
D1SD31 0402-001195 DIODE-RECTIFIER;F1T4,400V,1.0A,TS-1,TP
D1SF11 0402-001196 DIODE-RECTIFIER;1T5,600V,1A,TS-1,TP
D1SF12 0402-001196 DIODE-RECTIFIER;1T5,600V,1A,TS-1,TP
D1SS01 0402-001196 DIODE-RECTIFIER;1T5,600V,1A,TS-1,TP
D1SS02 0402-001196 DIODE-RECTIFIER;1T5,600V,1A,TS-1,TP
D1SS03 0402-001196 DIODE-RECTIFIER;1T5,600V,1A,TS-1,TP
D1SS04 0402-001196 DIODE-RECTIFIER;1T5,600V,1A,TS-1,TP
D1SS11 0402-000012 DIODE-RECTIFIER;UF4007,1KV,1A,DO-41,TP