Contenido
Guía de servicio
Precauciones
Información de referencia
Especificaciones del producto
Desemsamble y reensamble
Ajuste y alineamiento
Vista explotada
Lista de partes de reemplazo
Diagrama a bloques
Diagramas PCB (Placa de Circuito Impreso)
Diagramas esquemáticos
FILE NO. 120-200016
SERVICE MANUAL
VIDEO CASSETTE RECORDER
W-403C
PRINTED IN KOREA. APR, 2000
TOTAL CONTENTS
◆ Service Guide
1. Precautions
2. Reference Information
3. Product Specifications
4. Disassembly and Reassembly
5. Alignment and Adjustment
6. Exploded View
7. Replacement Parts List
8. Block Diagram
9. PCB Diagrams
10. Schematic Diagrams
Toshiba
I
SERVICE GUIDE
Assy Cylinder & Capsrtan Motor are used for this model, as shown below.
Assy-Cylinder
How to identify the Assy-Cylinder
Fig. 1
1) Three kinds of the Assy-Cylinder as shown below.
Œ ALPS Cylinder´ SEM Cylinder
2) When replacing the Assy-Cylinder, be sure to replace only “SEM Cylinder”.
The only part-no of “SEM Cylinder” is shown in the “CH7. Replacement Parts List” of Service Manual.
3) When changing from ALPS (connector ; pin 7) cylinder to SEM (connector ; pin 5) cylinder.
- Change CN605 (Connector ; pin 7 pin 5)
- Change CN605B (Cable-Flat ; pin 7 pin 5)
4) After replacing the “SEM Cylinder”, use type
“C, D, G, H”
optional for “NVRAM Option Setting”. (See page 5-9)
The Maker of Assy Cylinder
1
2
ALPS
SEM
The Maker of Assy Capstan Motor
1
2
SANKYO
SEM
ALPS CylinderSEM Cylinder
CONNECTOR ; Pin 7 or Pin 5
CONNECTOR ; Pin 5
II
Toshiba
How to identify the Capstan Motor
Fig. 2
1) Two kinds of the Capstan MotorŒ Sankyo Capstan Motor
´ SEM Capstan Motor
2) When replacing the Capstan Motor, be sure to replace only “SEM Capstan Motor”.
The only part-no of “SEM Capstan Motor” is shown in the “CH7. Replacement Parts List” of Service Manual.
3) After replacing the “SEM Capstan Motor”, use type
“E, F, G, H”
optional for “NVRAM Option Setting”. (See page 5-9)
Capstam Motor
TOP VIEW
SANKYO CAPSTAN MOTORSEM CAPSTAN MOTOR
CAPSTAN SHAFTCAPSTAN SHAFT
Toshiba1-1
1. 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 pretective 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 erath
ground (metal water pipe, conduit, etc.) and all
exposed metal parts, including : antennas, handle
brackets, metal cabinets, screwheads 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.
Fig. 1-1 AC Leakage Test
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.)
DEVICE
UNDER
TEST
(READING SHOULD
NOT BE ABOVE
0.5mA)
LEAKAGE
CURRENT
TESTER
EARTH
GROUND
TEST ALL
EXPOSED METER
SURFACES
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
2-WIRE CORD
Precautions
1-2Toshiba
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.
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, outof-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. Areplacement
part that does not have the same safety
characteristics as the original might create shock,
fire or other hazards.
Toshiba2-1
2. Reference Information
2-1 Operation of Controls
INTRODUCTION
Cassette indicator
VCR Display
TIMER
Timer recording indicator
REC
SLP
VCR
Multifunctional
indicator
REC (Recording)
indicator
VCR indicator
Tape speed indicator (SP/SLP)
Rear Panel
RF
IN
TO TV)
OUT
(
FROM ANT.)
(
CH
34
IN
VIDEO
AUDIO
OUT
RF IN (FROM ANT.) terminal
LINE IN AUDIO jacks
LINE OUT AUDIO jacks
RF OUT (TO TV) terminal
CH selector (3/4)
LINE IN VIDEO jack
LINE OUT VIDEO jack
To wall outlet
9
LINE IN AUDIO (Rear),
If the connected equipment is monaural (has one audio output jack), connect the L (MONO) side, the same
sound is recorded on both L and R on the Hi-Fi track.
EJECT
18
PLAY
EJECT
REW
19
19
EJECT
Cassette compartment
18
STOP
FF
19
REC
24
19
POWER
14
TV/VCR
CH/TRK
24
19
COUNTER
100
VOL/C.RESET
28
22
17
SP/SLP24TIMER
FF19PLAY
26
19
PAUSE
20
STOP
CURSOR
19
14
ENTER
14
STOP
STOP
FF
FF
PLAY
PLAY
REW
REW
REC
REC
VCR Display
9
Remote
sensor
10
CHANNEL
CHANNEL
POWER
POWER
14
See the page in for details.
This manual shows the names of buttons in italics.
Identification of Controls
INTRODUCTION
Front Panel
VIDEO SYSTEM
HEAD
4
CHANNEL
24
24
22
24
REC
TV
24
28
DISPLAY
INPUT SELECT
Number buttons
Remote Control
19
REW
14
VCR
21
27
SLOW
CANCEL
14
PROG
8
Reference Information
2-2Toshiba
11
PREPARATION
CH
OUT
(
TO TV)
IN
(
FROM ANT.)
34
RF
LINE OUT VIDEO
VIDEO IN
AUDIO INLINE OUT AUDIO
AUDIO
IN
OUT
VIDEO
CH
OUT
(
TO TV)
IN
(
FROM ANT.)
34
RF
AUDIO
INOUT
VIDEO
VHF UHF
VHF/UHF
CH
OUT
(
TO TV)
IN
(
FROM ANT.)
34
RF
OUT
(
TO TV)
IN
(
FROM ANT.)
RF
AUDIO
IN
OUT
VIDEO
Antenna/VCR/TV Connection
1
Disconnect the antenna cable from your TV and connect it to the RF IN terminal on the
VCR.
2
Connect the RF OUT terminal to the TV.
AUDIO/VIDEO Connections
The AUDIO/VIDEO jacks are also available to connect your TV.
When connected your TV using the
AUDIO/VIDEO OUT jacks
To watch video pictures, set the video input mode
on your TV. For the video input mode, refer to
the manual of your TV.
Setting the VCR Output Channel
When the VCR is connected in this way, the VCR sends the output
signals to channel 3 or 4 on your TV. Set the output channel
selector (CH selector) of the VCR to “3” or “4”, whichever is vacant
in your area.
VHF/UHF
combinaion antenna
VHF antenna
only
UHF antenna
only
Antenna splitter
(not supplied)
1
2
Connections
Before you use this VCR, it is necessary to connect it to your TV. Several ways of connecting are
available depending on your use of TV or cable box. Select one which is applicable to your equipment.
PREPARATION
Cable Connection
Choose one of the below according to your usage of the cable box.
This set-up will enable you to:
– record an unscrambled channel.
–
watch an unscrambled channel while recording it
.
– record an unscrambled channel while watching
another (only when you connect a cable-
compatible TV).
You will need to:
• select TV channel 3 or 4 to receive video signals
• to record a channel while watching another,
press TV/VCR on the remote control to turn off
the “VCR” indicator in the VCR display and
select a desired channel on the TV (only when
you connect a cable-compatible TV).
Incoming cable
+
+
to a strong light source such as direct sunlight
or illumination (especially high-frequency
This section explains how to get ready for remote control operation.
How to Use the Remote Control
PREPARATION
Open the battery compartment lid on the
Setting up the Remote Control
1
rear panel.
Install 2 batteries (“AA” size) following
the polarity diagrams.3Close the battery compartment lid.
2
Point the remote control at the VCR and press the buttons within the operating range.
Distance: within about 7 m from the front of the remote sensor
4
Angles: within about 30˚ in every direction
Caring for the remote control
Notes on batteries
lighting) when using the remote control.
• Do not expose the remote sensor of the VCR
• Be careful not to spill water on the remote
depending on the conditions of use.
correctly, replace all batteries with new ones.
• The life of the batteries is about 1 year
• If the remote control does not operate
• If the remote control is not to be used for a
control or to place it on anything wet, and avoid
sharp impacts.
long period of time, remove the batteries to
avoid possible damage from battery corrosion.
10
Reference Information
Toshiba2-3
13
PREPARATION
Auto Set Up
The VCR’s clock and tuner channels are set automatically when the VCR is plugged into the AC outlet.
PREPARATION
Auto Set up
1
Plug the VCR into the AC outlet2“AUTO” blink while the VCR automatically sets the clock
using the data broadcast by the local TV stations.
While “AUTO” is blinking, channel memory is also set
automatically.
3
When Auto set up has been completed, the VCR is on
standby mode.
Notes
• It may takes several minutes during the Auto set-up
• Press CANCEL on the remote control to cancel the auto set-up.
CANCEL
another (scrambled or unscrambled).
cable box.
3 or 4 according to the output channel of the
VCR.
press TV/VCR on the remote control to turn off
the “VCR” indicator in the VCR display and
This set-up will enable you to:
– record an unscrambled channel.
– watch an unscrambled channel while recording it.
– record an unscrambled channel while watching
You will need to:
• set TV channel to the output channel of the
• turn on the cable box and select cable channel
select a desired cable channel on the cable
• to record a channel while watching another,
box.
while recording it.
This set-up will enable you to:
– watch an unscrambled or scrambled channel
– record any channels through the cable box.
(See page 11.)
cable box, and select a desired cable channel
You will need to:
• set TV channel 3 or 4 to receive video signals.
on the cable box.
• set VCR channel to the output channel of the
unscrambled channel which
comes bypassing the cable
indicator is not lit in the VCR display, set TV
channel to the output channel of the cable box.
• while the VCR is turned off or the “VCR”
while recording it.
another unscrambled channel (only when you
This set-up will enable you to:
connect a cable-compatible TV).
– watch an unscrambled or scrambled channel
– record an unscrambled channel while watching
• A/B switch “A”:record and watch an
box.
or unscrambled channel coming
through the cable box.
• A/B switch “B”:record and watch a scrambled
box via the LINE IN 1 (AUDIO/VIDEO) jacks.
This set-up will enable you to:
– watch or record a channel through the cable
OUT
RF
IN
TO TV)
Cable box
IN
RF
IN
TO TV)
OUT
(
FROM ANT.)
(
CH
34
IN
VIDEO
AUDIO
OUT
Connections (continued)
Incoming cable
RF
IN
TO TV)
OUT
(
FROM ANT.)
(
CH
34
IN
VIDEO
AUDIO
OUT
OUT
Cable box
IN
Incoming cable
A/B switch
A
A
B
A
B
B
Cable box
OUT
(
FROM ANT.)
(
CH
34
IN
VIDEO
AUDIO
OUT
Cable box
shows “L1”.
You will need to:
• press INPUT SELECT so that the VCR display
RF
IN
TO TV)
OUT
(
FROM ANT.)
(
CH
34
IN
VIDEO
AUDIO
OUT
12
Reference Information
2-4Toshiba
15
PREPARATION
8
Press ENTER to start the “AUTO” clock
set feature.
After the VCR is turned off, it automatically
updates the clock using the data broadcast
by the local TV stations.
*
The clock is
revised by
broadcasting
signal at 8:00 A.M
every morning.
9
Select the options using CURSOR ( )
or ( ). Change the data using
CURSOR (
▲
) or (
▼
).
1) Set “SUMMER TIME
(Daylight-Saving Time)”.
DST start: Daylight-saving time begins on
the first Sunday in April. Because the
clock automatically changes from 2:00 AM
to 3:00 AM (forward one hour).
DST end: Daylight-saving time ends on
the last Sunday in October. The VCR
clock automatically changes from 2:00 AM
to 1:00 AM (back one hour).
remember that any part of a scheduled
Timer Recording that falls between these
two times will not be recorded.
AUTO: the VCR is using the clock data
Broadcast by the local TV stations.
IN: You want to use the DST function, and
you are leaving in the area that apply
Daylight-saving time.
OUT: You are not leaving in the area that
apply Daylight-saving time and you do not
want to use DST function.
2) Set “TIME ZONE”.
If you select “AUTO” for your time zone,
the VCR sets the clock using the first
Coordinated Universal Time information it
finds. If the time is not correct, select
another time zone or use the “MANU”
option.
3) Set “CLOCK DATA CH”.
If you don't know the clock data channel,
select “AUTO”. The VCR will scan
automatically to tune the channel carrying
the clock data.
If AUTO CLOCK SET is unsuccessful, set the
time and date through the “MANU” clock
set menu selection.
10
Press PROG..
Now the clock starts.
Setting the Clock
Example: To set the clock to 2:30 p.m. on
August 25 (summer time) 2000.
1
Press PROG..
The MENU screen appears on the TV.
2
Select “PRESET” using CURSOR ( )
or ( ), and press ENTER.
3
Press ENTER to select “CLOCK SET”.
4
Select “AUTO” or “MANU” using
CURSOR (
▲
) or (
▼
).
AUTO: The VCR automatically sets or
adjusts the clock.
If you select “AUTO” mode, proceed to step 8.
MANU: You can set the clock manually.
If you select “MANU” mode, proceed to next
step.
5
Vary the digits to set the hour.
CURSOR
▲
: To increase.
CURSOR
▼
: To decrease.
6
Move to the next using CURSOR ( )
(To move back, press CURSOR ( ).)
7
Repeat step 5 and 6 to set the minutes,
month, day, and the year (by the last
two digits).
Proceed to step 10 to start the clock.
▼
▼
E
n
D : PROG
SET UP
PRESET
PROGRAM
ENTER
CLOCK SET
CH MEMORY
▼
▼
E
n
D : PROG
SET UP
PRESET
PROGRAM
ENTER
CLOCK SET
SUMMER TIME
TIME ZO
n
E CH
AUTO
AUTO
AUTO
AUTO
2
SCA
nn
I
n
G
n
O
W
▼
▼
E
n
D : PROG
SET UP
PRESET
PROGRAM
ENTER
CLOCK SET
SUMMER TIME
TIME ZO
n
E CH
AUTO
AUTO
AUTO
PRESS E
n
TER
TO START SETTI
n
G
AUTO
ENTER
PRESET
SET UP
English
PROGRAM
Press POWER to turn on the VCR.
Setting the Language
1
Press PROG..
The following screen appears on the TV.
2
POWER
The language selection and clock setting must be set first when VCR is first plugged in or after it
Initial Settings Using On-screen Display
PREPARATION
encounters a power failure.
connection (page 11).
Preparation
• Turn on the TV, and select the video channel (3 or 4), or the video input mode if you made the Audio/Video
• Press VCR to set the remote control operating the VCR.
ENTER
Français
Español
D : PROG
n
E
Select the language using CURSOR
(▲) or (▼) , and press PROG..
VCR
3
PROG.
CURSOR
PRESET
U
n
SET UP
ME
: PROG
PROGRAM
n
F I
The screen turns to the MENU screen.
Press PROG. to return to the normal TV screen.
4
Optional settings on the SET UP screen
Page 23
Page 22
To change the language, move down here and set to the desired one.
PRESET
SET UP
PROGRAM
Other optional settings can be made. Press ENTER while “SET UP” is selected on the MENU screen.
UHF/VHF : 75ohm F type connector
Standard NTSC
Recording : VHS format (SP, SLP)
Playback : VHS format (SP, LP, SLP)
Video cassette with VHS mark
SLP : 11.1 mm/s,
SP : 33.4 mm/s
SLP : 480 minutes,
SP : 160 minutes (When T-160 video cassette is used.)
Within approx. 120 s (When T-120 video cassette is used.)
1V(p-p), 75 ohm, unbalanced, negative sync., pin jack
1V(p-p), 75 ohm, unbalanced, negative sync., pin jack
Line input : 308 mV(rms), more than 47 Kohm, pin jack
Line input : 308 mV(rms), more than 47 Kohm, pin jack
Temperature : 5°C to 40°C
Humidity : less than RH 80%
3-2Toshiba
MEMO
Toshiba
4-1
4. Disassembly and Reassembly
4-1 Cabinet Assembly
4-1-1 Cabinet Top Removal
Œ REMOVE 2 SCREWS
´ Lift up the Cabinet Top in the direction of
arrow by releasing the Hook.
Fig. 4-1 Cabinet Top Removal
4-1-2 Ass’y Front Panel Removal
Fig. 4-2
Œ RELEASE 4 HOOKS
(Top View)
Fig. 4-3
Œ RELEASE 4 HOOKS
(Top View)
4-2
Toshiba
Disassembly and Reassembly
4-1-3 Chassis Removal
¨ REMOVE 3 SCREWS
ˆ LIFT THE ASS'Y FULL DECK UP.
Œ REMOVE 2 SCREWS
´ REMOVE BRACKET-FRAME
ˇ REMOVE 2 SCREWS
Ø LIFT THE ASS'Y MAIN PCB UP TO REMOVE.
MODE SWITCH
ASSEMBLY POINT
When installing the ass'y full deck on the Main PCB,
be sure to align the assembly point of mode switch.
Fig. 4-4 Chassis Removal
Toshiba
4-3
4-2 Deck Parts Locations
4-2-1 Top View
Œ
´
ˇ
¨
ˆ
Ø
∏
Fig. 4-5 Top parts Location-1
Œ BRACKET FL TOP (Optional)
´ GEAR FL CAM
ˇ MOTOR LOADING ASS’Y
¨ LEVER FL ARM ASS’Y
ˆ HOLDER FL CASSETTE ASS’Y
Ø LEVER FL DOOR
∏ SLIDER FL DRIVE
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