Aiwa HV-FX5100 User Manual
HV-FX5100
K
SERVICE MANUAL
VIDEO CASSETTE RECORDER
POWER REQUIREMENTS.................
POWER CONSUMPTION...................
WEIGHT ..............................................
DIMENSIONS......................................
OPERATING TEMPERATURE...........
VIDEO RECORDING SYSTEM ..........
VIDEO SIGNAL SYSTEM ...................
VIDEO HEAD ......................................
USABLE CASSETTES........................
CHANNEL COVERAGE......................
RF OUTPUT ........................................
HORIZONTAL RESOLUTION ............
TIMER BACKUP .................................
TUNER SYSTEM ................................
TV SYSTEM ........................................
FAST-FORWARD TIME......................
REWIND TIME ....................................
HI-FI FREQUENCY RESPONSE .......
HI-FI DYNAMIC RANGE.....................
230 V AC, 50 Hz
17W
3.5 kg (7.7 lbs.)
380 mm (W) x 267 mm (D) x
95 mm (H)
(15 x 10 5/8 x 3 3/4 in.)
5°C to 40°C
Rotary 2 head helical scanning
system
PAL colour system, 625 lines,
50 fields
Double azimuth 4 heads
VHS video cassette
UHF: 21 to 69
UHF channels between 23 and
69, 73 dBµ
240 lines (SP)
30 minutes
Frequency synthesized tuner
I
135 seconds with E-180 tape
108 seconds with E-180 tape
20 Hz-20 KHz
More than 75 dB
SPECIFICATIONS
BASIC TAPE MECHANISM : OVD-6
HI-FI WOW AND FLUTTER.............
TAPE SPEED ...................................
RECORDING/PLAYBACK TIME .....
VIDEO INPUT...................................
VIDEO OUTPUT ..............................
VIDEO S/N .......................................
AUDIO INPUT ..................................
AUDIO OUTPUT ..............................
AUDIO TRACK .................................
Less than 0.01% (nominal)
PAL SP: 23.39 mm/sec
LP: 11.69 mm/sec
NTSC (playback only)
SP: 33.35 mm/sec
PAL SP: 5 hours with E-300 tape
LP: 10 hours with E-300 tape
NTSC (playback only)
SP: 3 hours 30 minutes with
T-210 tape
1.0 Vp-p, 75 ohm, unbalanced
1.0 Vp-p, 75 ohm, unbalanced
53 dB (nominal)
SCART: –3.8 dBs, 50 Kohm
RCA: –3.8 dBs, 50 Kohm
SCART: –3.8 dBs, less than 1 Kohm
RCA: –3.8 dBs, less than 1 Kohm
3 tracks (Hi-Fi sound 2 tracks, Normal
sound 1 track)
Design and specifications are subject to change without
•
notice.
S/M Code No. 09-996-332-2N1
DATA
TABLE OF CONTENTS
SPECIFICATIONS..............................................................................................................................................................
TABLE OF CONTENTS .....................................................................................................................................................
SERVICING NOTICES ON CHECKING .............................................................................................................................
IMPORTANT NOTICE ........................................................................................................................................................
DISASSEMBLY INSTRUCTIONS
REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS...........................................................................................
REMOVAL OF DECK PARTS..........................................................................................................................................
KEY TO ABBREVIATIONS .................................................................................................................................................
SERVICE MODE LIST .......................................................................................................................................................
PREVENTIVE CHECKS AND SERVICE INTERVALS .......................................................................................................
NOTE FOR THE REPLACING OF MEMORY IC ................................................................................................................
SERVICING FIXTURES AND TOOLS ................................................................................................................................
PREPARATION FOR SERVICING .....................................................................................................................................
VCR TEST TAPE INTERCHANGEABILITY TABLE ...........................................................................................................
MECHANICAL ADJUSTMENTS
CONFIRMATION AND ADJUSTMENT............................................................................................................................
CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM..................................................................
MECHANISM ADJUSTMENT PARTS LOCATION GUIDE .............................................................................................
ELECTRICAL ADJUSTMENTS
BASIC ADJUSTMENTS ...................................................................................................................................................
ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE.............................................................................................
TROUBLESHOOTING GUIDES..........................................................................................................................................
IC DESCRIPTIONS ............................................................................................................................................................
SERVO TIMING CHART ....................................................................................................................................................
SYSTEM SWITCH MODE ...................................................................................................................................................
SEMICONDUCTOR BASE CONNECTIONS ......................................................................................................................
BLOCK DIAGRAMS
Y/C/AUDIO/HEAD AMP ...................................................................................................................................................
SYSTEM CONTROL/SERVO/TIMER ..............................................................................................................................
TUNER/HIFI/21PIN/OSD/VPS/NICAM ............................................................................................................................
OPERATION/POWER.....................................................................................................................................................
DECK SCHEMATIC DIAGRAM...........................................................................................................................................
OPERATION SCHEMATIC DIAGRAM ...............................................................................................................................
PRINTED CIRCUIT BOARDS (OPERATION 1/2/DECK) ...................................................................................................
PRINTED CIRCUIT BOARDS (SYSCON) ..........................................................................................................................
Y/C/AUDIO/HEAD AMP SCHEMATIC DIAGRAM ..............................................................................................................
SYSTEM CONTROL/SERVO/TIMER SCHEMATIC DIAGRAM .........................................................................................
21PIN/OSD/VPS SCHEMATIC DIAGRAM .........................................................................................................................
TUNER/HIFI SCHEMATIC DIAGRAM ................................................................................................................................
POWER SCHEMATIC DIAGRAM .......................................................................................................................................
DISPLAY SCHEMATIC DIAGRAM .....................................................................................................................................
NICAM SCHEMATIC DIAGRAM .........................................................................................................................................
INTERCONNECTION DIAGRAM........................................................................................................................................
WAVEFORMS ....................................................................................................................................................................
MECHANICAL EXPLODED VIEW ......................................................................................................................................
MECHANICAL REPLACEMENT PARTS LIST ...................................................................................................................
ACCESSORY REPLACEMENT PARTS LIST ....................................................................................................................
CHASSIS EXPLODED VIEW (TOP VIEW).........................................................................................................................
CHASSIS EXPLODED VIEW (BOTTOM VIEW).................................................................................................................
CHASSIS REPLACEMENT PARTS LIST ...........................................................................................................................
ELECTRICAL REPLACEMENT PARTS LIST ....................................................................................................................
COVER
A-1
A-2
A-2
B1-1
B2-1~B2-5
C1-1, C1-2
C2-1
C3-1, C3-2
C4-1
C5-1
C5-1
C6-1
D1-1, D1-2
D1-2, D1-3
D1-4
D2-1
D2-2
E-1~E-28
F-1, F-2
G-1
G-2
H-1
I-1
I-2
I-3
I-4
J-1
J-2
J-3
J-4~J-6
J-7
J-8
J-9
J-10
J-11
J-12
J-13
J-14
K-1
L1-1
L2-1
L2-1
M1-1
M1-2
M2-1
N-1~N-3
A-1
SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES
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. 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.
3. 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.
PERFORM A SAFETY CHECK AFTER
4.
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.
IMPORTANT NOTICE
The remote control for this model can be selected the Custom code 1 and Custom code 2.
• How to selection;
Custom code 1 : P
Custom code 2 :
The Custom code 1 is only available for the VCR unit but the Custom code 2.
When selected the Custom code 2 by mistake, just remove the batteries from the remote
control for the moment or select the Custom code 1 as described above.
Press the Power key and 1 key on the remote control
simultaneously for more than 2 seconds.
Press the Power key and 2 key on the remote control
simultaneously for more than 2 seconds.
A-2
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS
AND P.C. BOARDS
1-1: TOP CABINET, FRONT CABINET AND
OPERATION 1, 2 PCB (Refer to Fig. 1-1)
1.
Remove the 4 screws 1.
2.
Remove the Top Cabinet in the direction of arrow (A).
3.
Disconnect the following connectors: (CP651 and CP652).
4.
Unlock the 7 supports 2.
5.
Remove the Front Cabinet in the direction of arrow (B).
6.
Remove the 3 screws 3 and remove the Operation 1 PCB.
7.
Remove the 4 screws 4 and remove the Operation 2 PCB.
1
1
1
Fig. 1-1
Operation 2 PCB
Front Cabinet
2
2
2
Top Cabinet
1
(A)
4
4
4
4
(B)
2
2
3
2
3
Operation 1 PCB
2
3
1-3: DECK CHASSIS (Refer to Fig. 1-3)
Remove the 3 screws 1.
1.
Remove the screw 2.
2.
Disconnect the following connectors: (CP1001, CP1002,
3.
CP1004, CP4001, CP4002 and CP4003).
Remove the Deck Chassis in the direction of arrow.
4.
2
1
1
1
Deck Chassis
Bottom Plate
Fig. 1-3
1-4: SYSCON PCB (Refer to Fig. 1-4)
Remove the screw 1.
1.
Remove the 2 screws 2.
2.
Remove the 2 screws 3.
3.
Remove the Syscon PCB in the direction of arrow.
4.
3
1-2: FLAP (Refer to Fig. 1-2)
1.2.Open Flap to 90˚ and flex in direction of arrow (A), at
the same time slide in direction of arrow (B).
Then lift in direction of arrow (C).
(A)
(C)
(B)
Flap
Fig. 1-2
Syscon PCB
Bottom Plate
3
1
2
2
Fig. 1-4
B1-1
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1)
Remove the 2 screws 1.
1.
Slide the 2 supports 2 and remove the Top Bracket.
2.
NOTE
When you install the Top Bracket, install the screw (1)
first, then install the screw (2).
(2)
1
Top Bracket
2
Main Chassis
• Screw Torque: 5 ± 0.5kgf•cm
2-2:
DECK COVER/FLAP LEVER/TAPE GUIDE R
Top Bracket
2
Main Chassis
(Refer to Fig. 2-2)
Move the Cassette Holder Ass'y to the back side.
1.
Unlock the support 1 and remove the Deck Cover.
2.
Remove the Polyslider Washer 2.
3.
Unlock the support 3 and remove the Flap Lever.
4.
Unlock the 3 supports 4 and remove the Tape Guide R.
5.
(1)
1
Fig. 2-1
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)
Tape Guide L
REC Lever
• The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-B
2-4: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-4)
Move the Cassette Holder Ass'y to the front side.
1.
Push the Locker R to remove the Cassette Side R.
2.
Remove the Cassette Side L.
3.
Main Chassis
Cassette Side R
Locker R
Deck Cover
Tape Guide R
1
4
4
4
Main Chassis
Flap Lever
3
Fig. 2-2
2-3: TAPE GUIDE L (Refer to Fig. 2-3-A)
Move the Cassette Holder Ass'y to the back side.
1.
Unlock the 2 supports 1 and remove the Tape Guide L.
2.
Remove the REC Lever. (Recorder only)
3.
REC Lever
Tape Guide L
1
Cassette Side L
Main Chassis
Fig. 2-4
2-5: CASSETTE SIDE L/R (Refer to Fig. 2-5)
Remove the Locker Spring.
1.
Unlock the 4 supports 1 and then remove the Cassette
2.
Side L/R.
NOTE
2
When you install the Cassette Side L/R, be sure to move
the Locker L/R after installing.
1
1
Locker Spring
Locker R
Cassette Side R
1
1
Locker L
Cassette Side L
Fig. 2-5
1
Main Chassis
• The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-A
B2-1
DISASSEMBLY INSTRUCTIONS
2-6: LINK ASS'Y (Refer to Fig. 2-6)
Set the Link Ass'y to the Eject position.
1.
Remove the (A) side of the Link Ass'y first, then remove
2.
the (B) side.
Link Ass'y
(A)
Main Chassis
(B)
Link Ass'y
Main Chassis
Fig. 2-6
2-7: LOADING MOTOR ASS'Y (Refer to Fig. 2-7)
Remove the Link Lever.
1.
Remove the Dumper Spring.
2.
Remove the 2 screws 1.
3.
Unlock the support 2 and remove the Loading Motor
4.
Ass'y.
Unlock the 2 supports 3 and remove the Deck PCB
5.
(BOT).
1
Dumper Spring
Loading Motor Ass'y
2
2-9: TENSION ASS'Y (Refer to Fig. 2-9-A)
Move the Inclined S Ass'y to the back side.
1.
Unlock the support 1 and remove the S Reel Stopper.
2.
Remove the Tension Spring.
3.
Unlock the support 2 and remove the Tension Arm
4.
Ass'y.
Remove the Tension Adjust.
5.
Unlock the 2 supports 3 and remove the Tension Band
6.
Ass'y.
Unlock the support 4 and remove the Tension Holder.
7.
Tension Adjust
3
3
Tension Spring
2
4
S Reel Stopper
1
Tension Band Ass'y
Tension Arm Ass'y
Tension Holder
Inclined S Ass'y
Fig. 2-9-A
NOTE
When you install the Tension Adjust, install as shown in
Fig. 2-9-B. (Refer to Fig. 2-9-B)
Adjust the direction of the Marker to inside.
3
Main Chassis
• Screw Torque: 5 ± 0.5kgf•cm
1
Deck PCB
(BOT)
Link Lever
Fig. 2-7
2-8: SENSOR COVER L (Refer to Fig. 2-8)
Unlock the support 1 and remove the Sensor Cover L.
1.
Unlock the 2 supports 2 and remove the Deck PCB
2.
(EOT).
Main Chassis
Sensor Cover L
Deck PCB
(EOT)
1
2
2
Fig. 2-8
2-10: T BRAKE ASS'Y (Refer to Fig. 2-10)
Remove the T Brake Spring.
1.
Remove the T Brake Ass'y.
2.
T Brake Ass'y
T Brake Spring
Fig. 2-9-B
Fig. 2-10
B2-2
DISASSEMBLY INSTRUCTIONS
2-11: S REEL/T REEL ASS'Y (Refer to Fig. 2-11)
Remove the Idler Ass'y.
1.
Remove the S Reel and T Reel Ass'y.
2.
Remove the 2 Polyslider Washers 1.
3.
NOTE
Take care not to damage the gears of the S Reel, T
1.
Reel Ass'y and Idler Ass'y.
The Polyslider Washer may be remained on the back of
2.
the reel.
Take care not to damage the shaft.
3.
Do not touch the section "A" of S Reel and T Reel Ass'y.
4.
(Use gloves.) (Refer to Fig. 2-11) Do not adhere the
stains on it.
When you install the reel, clean the shaft and oil it
5.
(KYODO OIL Slidas #150). (If you do not oil, noise may
be heard in FF/REW mode.)
After installing the reel, adjust the height of the reel.
6.
(Refer to MECHANICAL ADJUSTMENT)
S Reel
(A)
1
Idler Ass'y
T Reel Ass'y
(A)
1
Fig. 2-11
NOTE
Do not touch the Pinch Roller. (Use gloves.)
1.
When you install the Pinch Roller Ass'y, install as
2.
shown in the circle. (Refer to Fig. 2-12-B)
Fig. 2-12-B
2-13: A/C HEAD (Refer to Fig. 2-13-A)
Remove the screw 1.
1.
Remove the A/C Head Base.
2.
Remove the 3 screws 2.
3.
Remove the A/C Head and A/C Head Spring.
4.
NOTE
Do not touch the A/C Head. (Use gloves.)
1.
When you install the A/C Head Spring, install as shown
2.
in Fig. 2-13-B. (Refer to Fig. 2-13-B)
When you install the A/C Head, tighten the screw (1)
3.
first, then tighten the screw (2), finally tighten the screw
(3).
(3)
(1)
2
2
(2)
2
A/C Head
2-12: PINCH ROLLER ASS'Y/P5 ARM ASS'Y
(Refer to Fig. 2-12-A)
Remove the P5 Spring.
1.
Remove the screw 1.
2.
Unlock the 2 supports 2 and remove the Cassette
3.
Opener.
Remove the Pinch Roller Ass'y, Pinch Roller Lever and
4.
P5 Arm Ass'y.
1
P5 Spring
2
Cassette Opener
2
Pinch Roller Ass'y
P5 Arm Ass'y
Pinch Roller Lever
Main Chassis
A/C Head Spring
1
A/C Head Base
Fig. 2-13-A
Spring Position
Fig. 2-13-B
2-14: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-14)
Remove the screw 1.
1.
Remove the FE Head.
2.
FE Head
1
• Screw Torque: 5 ± 0.5kgf•cm
Fig. 2-12-A
B2-3
• The FE Head is not installed on the Video Cassette Player.
Fig. 2-14
DISASSEMBLY INSTRUCTIONS
2-15: AHC ASS'Y/CYLINDER UNIT ASS'Y
(Refer to Fig. 2-15)
Unlock the support 1 and remove the AHC Ass'y.
1.
Remove the 3 screws 2.
2.
Remove the Cylinder Unit Ass'y.
3.
NOTE
When you install the Cylinder Unit Ass'y, tighten the
screws from (1) to (3) in order while pulling the Ass'y
toward the left front direction.
2
Cylinder Unit Ass'y
2
(2)
(3)
2
(1)
AHC Ass'y
1
1
Middle Gear
E-Ring
Main Cam
2
Pinch Roller Cam
Link Lever Spacer
3
Joint Gear
P5 Cam
Fig. 2-17-A
NOTE
When you install the Pinch Roller Cam, P5 Cam and Main
Cam, align each marker. (Refer to Fig. 2-17-B)
Pinch Roller Cam
Check the hole of Main
Chassis can be seen.
P5 Cam
• Screw Torque: 5 ± 0.5kgf•cm
Fig. 2-15
2-16: CAPSTAN DD UNIT (Refer to Fig. 2-16)
Remove the Capstan Belt.
1.
Remove the 3 screws 1.
2.
Remove the Capstan DD Unit.
3.
Capstan Belt
Capstan DD Unit
1
1
1
• Screw Torque: 5 ± 0.5kgf•cm
Fig. 2-16
2-17: MIDDLE GEAR/MAIN CAM (Refer to Fig. 2-17-A)
Remove the Polyslider Washer 1, then remove the
1.
Middle Gear.
Remove the E-Ring, then remove the Main Cam, Link
2.
Lever Spacer and P5 Cam.
Remove the Polyslider Washer 2, then remove the
3.
Pinch Roller Cam.
Remove the Polyslider Washer 3, then remove the
4.
Joint Gear.
Main Cam
Marker
Fig. 2-17-B
2-18: CLUTCH ASS'Y (Refer to Fig. 2-18)
Remove the Polyslider Washer 1.
1.
Remove the Clutch Ass'y, Ring Spring, Ring Clutch,
2.
Gear Clutch and Polyslider Washer 2.
NOTE
When you install the Clutch Ass'y, oil the shaft (KYODO
OIL Slidas #150).
1
Clutch Ass'y
Ring Spring
Ring Clutch
Gear Clutch
2
App. 5mm
B2-4
Fig. 2-18
DISASSEMBLY INSTRUCTIONS
2-19: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-19-A)
Remove the E-Ring 1 and remove the Main Loading
1.
Gear.
Remove the Capstan Brake Spring.
2.
Slide the Main Rod and remove the Capstan Brake
3.
Arm Ass'y.
Remove the Main Rod.
4.
Remove the Tension Lever.
5.
Unlock the 2 supports 2 and remove the Clutch Lever.
6.
Remove the screw 3 and washer 4.
7.
Remove the LED Reflecter.
8.
Remove the Loading Arm S Ass'y and Loading Arm T
9.
Ass'y.
Remove the Loading Gear S and Loading Gear T.
10.
Remove the Loading Gear Spring.
11.
Capstan Brake Spring
Main Rod
Clutch Lever
2
2
LED Reflecter
Capstan Brake Arm Ass'y
1
3
4
Main Loading Gear
Tension Lever
Loading Gear T
Loading Arm T Ass'y
Loading Gear S
Loading Gear
Spring
Loading Gear
Spring
2-20: INCLINED S/T ASS'Y (Refer to Fig. 2-20)
Unlock the support 1 and remove the P4 Cover.
1.
Remove the S-S Brake Spring.
2.
Unlock the support 2 and remove the Loading Gear
3.
Holder.
Remove the S-S Brake Arm.
4.
Remove the Inclined S.
5.
Remove the Inclined T.
6.
Remove the 2 screws 3, then remove the Guide Roller
7.
and O-Ring.
NOTE
Do not touch the roller of Guide Roller.
Loading Gear Holder
Guide Roller
O-Ring
Inclined S
3
2
S-S Brake Spring
S-S Brake Arm
Guide Roller
O-Ring
3
Inclined T
P4 Cover1
Loading Arm S Ass'y
Fig. 2-19-A
NOTE
When you install the Loading Arm S Ass'y, Loading Arm T
Ass'y and Main Loading Gear, align each marker. (Refer
to Fig. 2-19-B)
Marker
Main Loading Gear
Marker
Loading Arm T Ass'y
Loading Arm S Ass'y
• Screw Torque: 0.7 ± 0.2kgf•cm
Fig. 2-20
Fig. 2-19-B
B2-5
A
A/C
ACC
AE
AFC
AFT
AFT DET
AGC
AMP
ANT
A.PB
APC
ASS'Y
AT
AUTO
A/V
B
BGP
BOT
BPF
BRAKE SOL
BUFF
B/W
C
C
CASE
CAP
CARR
CH
CLK
CLOCK (SY-SE)
COMB
CONV
CPM
CTL
CYL
CYL-M
CYL SENS
D
DATA (SY-CE)
dB
DC
DD Unit
DEMOD
DET
DEV
E
E
EF
EMPH
ENC
ENV
EOT
EQ
EXT
F
F
FBC
FE
FF
FG
FL SW
FM
FSC
FWD
G
GEN
GND
H
H.P.F
KEY TO ABBREVIATIONS
:
Audio/Control
:
Automatic Color Control
:
Audio Erase
:
Automatic Frequency Control
:
Automatic Fine Tuning
:
Automatic Fine Tuning Detect
:
Automatic Gain Control
:
Amplifier
:
Antenna
:
Audio Playback
:
Automatic Phase Control
:
Assembly
:
All Time
:
Automatic
:
Audio/Video
:
Burst Gate Pulse
:
Beginning of Tape
:
Bandpass Filter
:
Brake Solenoid
:
Buffer
:
Black and White
:
Capacitance, Collector
:
Cassette
:
Capstan
:
Carrier
:
Channel
:
Clock
:
Clock (Syscon to Servo)
:
Combination, Comb Filter
:
Converter
:
Capstan Motor
:
Control
:
Cylinder
:
Cylinder-Motor
:
Cylinder-Sensor
:
Data (Syscon to Servo)
:
Decibel
:
Direct Current
:
Direct Drive Motor Unit
:
Demodulator
:
Detector
:
Deviation
:
Emitter
:
Emitter Follower
:
Emphasis
:
Encoder
:
Envelope
:
End of Tape
:
Equalizer
:
External
:
Fuse
:
Feed Back Clamp
:
Full Erase
:
Fast Forward, Flipflop
:
Frequency Generator
:
Front Loading Switch
:
Frequency Modulation
:
Frequency Sub Carrier
:
Forward
:
Generator
:
Ground
:
High Pass Filter
H.SW
Hz
I
IC
IF
IND
INV
K
KIL
L
L
LED
LIMIT AMP
LM, LDM
LP
L.P.F
LUMI.
M
M
MAX
MINI
MIX
MM
MOD
MPX
MS SW
N
NC
NR
O
OSC
OPE
P
PB
PB CTL
PB-C
PB-Y
PCB
P. CON
PD
PG
P-P
R
R
REC
REC-C
REC-Y
REEL BRK
REEL S
REF
REG
REW
REV, RVS
RF
RMC
RY
S
S. CLK
S. COM
S. DATA
SEG
SEL
SENS
SER
SI
SIF
SO
SOL
SP
STB
SW
:
Head Switch
:
Hertz
:
Integrated Circuit
:
Intermediate Frequency
:
Indicator
:
Inverter
:
Killer
:
Left
:
Light Emitting Diode
:
Limiter Amplifier
:
Loading Motor
:
Long Play
:
Low Pass Filter
:
Luminance
:
Motor
:
Maximum
:
Minimum
:
Mixer, mixing
:
Monostable Multivibrator
:
Modulator, Modulation
:
Multiplexer, Multiplex
:
Mecha State Switch
:
Non Connection
:
Noise Reduction
:
Oscillator
:
Operation
:
Playback
:
Playback Control
:
Playback-Chrominance
:
Playback-Luminance
:
Printed Circuit Board
:
Power Control
:
Phase Detector
:
Pulse Generator
:
Peak-to Peak
:
Right
:
Recording
:
Recording-Chrominance
:
Recording-Luminance
:
Reel Brake
:
Reel Sensor
:
Reference
:
Regulated, Regulator
:
Rewind
:
Reverse
:
Radio Frequency
:
Remote Control
:
Relay
:
Serial Clock
:
Sensor Common
:
Serial Data
:
Segment
:
Select, Selector
:
Sensor
:
Search Mode
:
Serial Input
:
Sound Intermediate Frequency
:
Serial Output
:
Solenoid
:
Standard Play
:
Serial Strobe
:
Switch
C1-1
S
SYNC
SYNC SEP
T
TR
TRAC
TRICK PB
TP
U
UNREG
V
V
VCO
VIF
VP
V.PB
VR
V.REC
VSF
VSR
VSS
V-SYNC
VT
X
X'TAL
Y
Y/C
KEY TO ABBREVIATIONS
:
Synchronization
:
Sync Separator, Separation
:
Transistor
:
Tracking
:
Trick Playback
:
Test Point
:
Unregulated
:
Volt
:
Voltage Controlled Oscillator
:
Video Intermediate Frequency
:
Vertical Pulse, Voltage Display
:
Video Playback
:
Variable Resistor
:
Video Recording
:
Visual Search Fast Forward
:
Visual Search Rewind
:
Voltage Super Source
:
Vertical-Synchronization
:
Voltage Tuning
:
Crystal
:
Luminance/Chrominance
C1-2
SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily.
Method Operations
Press both PLAY button and
CH UP button on the set for
more than 2 seconds.
Press both FF button and CH
UP button on the set for more
than 2 seconds.
Press the ATR button on the
remote control for more than
2 seconds during PLAY.
Press both STOP button
and CH UP button on the
set for more than 2 seconds
during PLAY.
Press both CH UP button and
CH DOWN button on the set
for more than 2 seconds.
Make the short circuit between
the test point of SERVICE and
the GND.
Initialization of the factory.
NOTE: Do not use this for the normal servicing.
PLAY/REC total hours are displayed on the FIP.
Refer to the "PREVENTIVE CHECKS AND SERVICE INTERVALS"
(CONFIRMATION OF USING HOURS).
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "NOTE FOR THE REPLACING OF MEMORY IC".
Adjusting of the Tracking to the center position.
Refer to the "MECHANICAL ADJUSTMENT" (GUIDE ROLLER) and "ELECTRICAL
ADJUSTMENT" (PG SHIFTER).
Adjust the PG SHIFTER automatically.
Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER).
CH Preset and Clock Setting are automatically set. (AUTO SET UP)
The EOT/BOT/Reel sensor do not work at this moment.
Refer to the "PREPARATION FOR SERVICING"
C2-1
PREVENTIVE CHECKS AND SERVICE INTERVALS
The following standard table depends on environmental conditions and usage. Unless maintenance is properly
carried out, the following service intervals may be quite shortened as harmful effects may be had on other parts.
Also, long term storage or misuse may cause transformation and aging of rubber parts.
Time
Parts Name
Audio Control Head
Full Erase Head
(Recorder only)
Capstan Belt
Pinch Roller
Capstan DD Unit
Loading Motor
Tension Band
Capstan Shaft
Tape Running
Guide Post
Cylinder Unit
: Clean
: Replace
500
hours
1,000
hours
1,500
hours
2,000
hours
3,000
hours
CONFIRMATION OF USING HOURS
PLAY/REC total hours can be checked on the FIP.
Total hours are displayed in 16 system of notation.
1.
Press both FF button and CH UP button on the set for more than 2 seconds.
2.
Adjust the ADDRESS to "FD" by SET +/- button and read the DATA.
(This DATA becomes the thousands digit and hundreds digit value of the following formula.)
3.
Adjust the ADDRESS to "FE" by SET +/- button and read the DATA.
(This DATA becomes the tens digit and ones digit value of the following formula.)
4.
After the confirmation of using hours, turn off the power.
Notes
Clean those parts in
contact with the tape.
Clean the rubber, and parts
which the rubber touches.
Replace when rolling
becomes abnormal.
Clean the Head
ADDRESS DATA
(16 x 16 x 16 x thousands digit value) + (16 x 16 x hundreds digit value) + (16 x tens digit value) + (ones digit value)
C3-1
PREVENTIVE CHECKS AND SERVICE INTERVALS
CLEANING
NOTE
After cleaning the heads with isopropyl alcohol, do not
run a tape until the heads dry completely. If the heads
are not completely dry and alcohol gets on the tape,
damage may occur.
1. AUDIO CONTROL HEAD
Wrap a piece of chamois around your finger. Dip it in
isopropyl alcohol and clean the audio control head by
wiping it horizontally. Clean the full erase head in the
same manner. (Refer to the figure below.)
2. TAPE RUNNING SYSTEM
When cleaning the tape transport system, use the
gauze moistened with isopropyl alcohol.
3. CYLINDER
Wrap a piece of chamois around your finger. Dip it in
isopropyl alcohol. Hold it to the cylinder head softly.
Turn the cylinder head counterclockwise to clean it (in
the direction of the arrow). (Refer to the figure below.)
NOTE
Do not exert force against the cylinder head. Do not move
the chamois upward or downward on the head.
Use the chamois one by one.
Audio Control Head
Cylinder Head
C3-2
NOTE FOR THE REPLACING OF MEMORY IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to
ensure correct data settings while making reference to TABLE 1.
ADDRESS DATA ADDRESS DATA ADDRESS DATA ADDRESS DATA ADDRESS DATA
CC F1 D6 80 E0 76 EA 51 F4 41
CD
CE
CF
D0
D1
D2 00 DC 42 E6 6C F0 00 FA 04
D3
D4
D5 03 DF 56 E9 15 F3 41
1.2.Turn on the POWER and press both FF key and CH UP key on the set for more than 2 seconds.
ADDRESS and DATA should appear as FIG 1.
44 D7 00 E1 5E EB 5F 83F5
24 D8 71 E2 08 EC 09 F6 3D
88 D9 9F E3 F0 ED F0 F7 6B
92 DA 02 E4 01 EE 05 0BF8
45 DB 0A E5 F3 EF F3 F9 0C
02 DD 35 E7 2B F1 2F FB 3A
09 DE A3 E8 21 F2 DF FC 99
Table 1
ADDRESS DATA
Fig. 1
3.
ADDRESS is now selected and should "blink". Using the SET + or - keys on the remote, step through the ADDRESS until
required ADDRESS to be changed is reached.
4.
Press ENTER to select DATA. When DATA is selected, it will "blink".
5.
Again, step through the DATA using SET + or - until required DATA value has been selected.
6.
Pressing ENTER will take you back to ADDRESS for further selection if necessary.
7.
Repeat steps 3 to 6 until all data has been checked.
8.
When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
The unit will now have the correct DATA for the new MEMORY IC.
C4-1
SERVICING FIXTURES AND TOOLS
(For 1 speed model)
VHS Alignment Tape
JG001E
JG001F
JG001U
(TTV-P2)
(TTV-P1L)
1
(VP S-X6 )
3
Screwdriver
JG154 Cable
Parts No. SJ-G15-400-000
(For 2 speed model)
VHS Alignment Tape
JG001C
JG001D
JG001V
(TTV-P2)
(TTV-P1L)
(VP S-X6 )
2
3
Tentelometer
JG002B
JG002E
JG002F
JG024AJG022 Master PlaneJG153 X Value Adjustment
Adapter
Dial Torque Gauge
(10~90gf•cm)
(60~600gf•cm)
Reel Disk Height
Adjustment Jig
JG005 Post Adjustment
Screwdriver
Part No. SV-TG0-030-000
(small)
JG100A Torque Tape
(VHT-063)
Part No. Remarks
JG001E
JG001F
Stair Steps, 6KHz (For 1 speed model)
Color Bar, 1KHz (For 1 speed model)
JG001U X Value Adjustment (For 1 speed model)
JG001C
JG001D
Stair Steps, 7KHz (For 2 speed model)
Color Bar, 1KHz (For 2 speed model)
JG001V X Value Adjustment (For 2 speed model)
JG002B VSR Torque, Brake Torque (S Reel/T Reel Ass'y)
JG002E Brake Torque (T Reel Ass'y)
JG002F
JG005
JG153
JG022/JG024A
VSR Torque, Brake Torque (S Reel)
Guide Roller Adjustment
X Value Adjustment
Reel Disk Height Adjustment
JG100A Playback Torque, Back Tension Torque During Playback
JG154
Used to connect the test point of SERVICE and GROUND
PREPARATION FOR SERVICING
How to use the Servicing Fixture
1.
Short circuit between TP1001 and TP1002 with the cable JG154.
(Refer to ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE)
The EOT, BOT and Reel Sensor do not work at this moment.
At that time, the STOP/EJECT button is available to insert and eject the Cassette Tape.
C5-1
VCR TEST TAPE INTERCHANGEABILITY TABLE
There are two types of the new alignment tape CH-1B (for NTSC) and CH-2 (for PAL). On each tape four signals (1) - (4) are
recorded for the times and in the order shown below.
(1) : 8min. ---> (2) : 2min. ---> (3) : 5min. ---> (4) : 5min.
The TTV-MP1 (for M-PAL), TTV-MS1 (for MESECAM) and TTV-S1 (for SECAM) alignment tapes have the same contents as
the previous tapes.
Method
NTSC
Now in use TYPE
TTV-N1
TTV-N1E
TTV-N2
TTV-N12
(SCV-1998)
TTV-N7A
New TYPE
Contents*1Model Model Contents*1
NTSC, Color,
1kHz, SP
NTSC, Color,
1kHz, EP
NTSC, Stairsteps,
7kHz, SP
NTSC, Color,
1kHz, SP
NTSC, Stairsteps,
1kHz, SP, HiFi
400Hz
CH-1B(2)
CH-1B(4)
CH-1B(1)
CH-1B(4)
CH-1B(3)
NTSC, Stairsteps,
1kHz, SP
NTSC, Color,
*2
1kHz, EP
NTSC, Stairsteps,
7kHz, SP
NTSC, Color, No
sound SP, HiFi
400Hz
NTSC, Color,
1kHz, EP
Application
PB-Y Level/General electrical ADJ.
Head ACE Height/Tilt ADJ.
Switching position ADJ.
Head ACE Azimuth ADJ.
FM envelope ADJ.
X-Value ADJ.
HiFi Audio PB Level ADJ.
TTV-P1
TTV-P1L
PAL
TTV-P2
TTV-P7
TTV-P16
*1. Described in the order of color format. Video signal. Linear audio. Tape speed and Hi-Fi audio.
*2. Use CH-1B (1) - (3) with models used exclusively in the SP mode.
*3. Use CH-2 (3) and (4) when it is necessary to observe the chroma signal.
PAL, Color,
1kHz, SP
PAL, Color,
1kHz, LP
PAL, Stairsteps,
6kHz, SP
PAL, Stairsteps,
1kHZ, SP, HiFi,
1kHz
PAL, Color, 400Hz,
SP, HiFi 1kHz
CH-2(2)
*3
CH-2(4)
CH-2(1)
CH-2(3)
PAL, Stairsteps,
1kHz, SP
PAL, Color,
1kHz, LP
PAL, Stairsteps,
6kHz, SP
PAL, Color, No
sound SP, HiFi
400Hz
No Changed.
Switching position ADJ.
PB-Y Level/General electrical ADJ.
Head ACE Height/Tilt ADJ.
Switching position. (LP Model)
FM Envelope ADJ. (LP Model)
X-Value ADJ. (LP Model)
Head ACE Azimuth ADJ.
FM Envelope ADJ. (SP Model)
X-Value ADJ. (SP Model)
HiFi Audio PB Level ADJ.
FM Filter ADJ.
C6-1
MECHANICAL ADJUSTMENTS
1. CONFIRMATION AND ADJUSTMENT
Read the following NOTES before starting work.
••Place an object which weighs between 450g~500g on
the Cassette Tape to keep it steady when you want to
make the tape run without the Cassette Holder. (Do not
place an object which weighs over 500g.)
When you activate the deck without the Cassette
Holder, short circuit between TP1001 and TP1002.
(Refer to ELECTRICAL ADJUSTMENT PARTS
LOCATION GUIDE) In this condition the BOT/EOT/Reel
Sensor will not function.
CONFIRMATION AND ADJUSTMENT OF REEL
1-1:
DISK HEIGHT
1.
Turn on the power and set to the STOP mode.
2.
Set the master plane (JG022) and reel disk height
adjustment jig (JG024A) on the mechanism framework,
taking care not to scratch the drum, as shown in Fig. 1-
1-A.
3.
Confirm that "A" of the reel disk is lower than "B" of the
reel disk height adjustment jig (JG024A) , and is higher
than "C". If it is not enough height, adjust to 10(+0.2, -0)
mm with the height adjustment washer.
4.
Adjust the other reel in the same way.
Master Plane (JG022)
1-2: CONFIRMATION AND ADJUSTMENT OF TENSION
POST POSITION
1.
Set to the PLAY mode.
2.
Adjust the Tension Adjust until the length from the edge
of the Tension Arm to the standard line of the Main
Chassis is 0.5 ± 0.25mm.
After this adjustment, confirm that the cut position is
located in "A" area as shown in Fig. 1-2-B. If it is
located in "B" area, adjust again.
3.
While turning the S Reel clockwise, confirm that the
edge of the Tension Arm is located in the position
described above.
Standard line of Main Chassis
0.5 ± 0.25mm
Tension Adjust
Tension Arm
Fig. 1-2-A
Master Plane (JG022)
10(+0.2, -0)mm
Reel Disk Height Adjustment Jig
(JG024A)
Reel Disk
Height Adjustment
Washer
2.6x4.7xT0.13
2.6X4.7xT0.25
Reel Disk Height
Adjustment Jig
(JG024A)
(B)
(A)
Fig. 1-1-A
(C)
Fig. 1-1-B
(A)
Cut Position
(B)
Tension Adjust
Fig. 1-2-B
1-3: CONFIRMATION OF PLAYBACK TORQUE AND
BACK TENSION TORQUE DURING PLAYBACK
Load a video tape (E-180) recorded in standard speed
1.
mode. Set the unit to the PLAY mode.
Install the tentelometer as shown in Fig. 1-3. Confirm that
2.
the meter indicates 20 ± 2gf in the beginning of playback.
• USING A CASSETTE TYPE TORQUE TAPE (JG100A)
1.
After confirmation and adjustment of Tension Post
position (Refer to item 1-2), load the cassette type
torque tape (JG100A) and set to the PLAY mode.
2.
Confirm that the right meter of the torque tape indicates
70~130gf•cm during playback in SP mode.
3.
Confirm that the left meter of the torque tape indicates
25~40gf•cm during playback in SP mode.
Tentelometer
Video Tape
D1-1
P1 Post
Guide Roller
Fig. 1-3
MECHANICAL ADJUSTMENTS
1-4: CONFIRMATION OF VSR TORQUE
Operate within 4~5 seconds after the reel disk begins to
1.
turn.
Install the Torque Gauge (JG002F) and Adapter (JG002B)
2.
on the S Reel. Set to the Rewind mode. (Refer to Fig.1-4)
Then, confirm that it indicates 120~180gf•cm.
3.
NOTE
Install the Torque Gauge on the reel disk firmly. Press the
REW button to turn the reel disk.
1-5: CONFIRMATION OF REEL BRAKE TORQUE
(S Reel Brake) (Refer to Fig. 1-4)
Set to the STOP mode.
1.
Move the Idler Ass'y from the S Reel.
2.
Install the Torque Gauge (JG002F) and Adapter
3.
(JG002B) on the S Reel. Turn the Torque Gauge
(JG002F) clockwise.
Then, confirm that it indicates 70~100gf•cm.
4.
(T Reel Brake) (Refer to Fig. 1-4)
Set to the STOP mode.
1.
Move the Idler Ass'y from the T Reel Ass'y.
2.
Install the Torque Gauge (JG002E) and Adapter
3.
(JG002B) on the T reel. Turn the Torque Gauge
(JG002E) counterclockwise.
Then, confirm that it indicates 35~60gf•cm.
4.
Torque Gauge/Adapter
(JG002F/JG002B)
2. CONFIRMATION AND ADJUSTMENT
OF TAPE RUNNING MECHANISM
Tape Running Mechanism is adjusted precisely at the
factory. Adjustment is not necessary as usual. When you
replace the parts of the tape running mechanism because
of long term usage or failure, the confirmation and
adjustment are necessary.
2-1: GUIDE ROLLER
Playback the VHS Alignment Tape (JG001C or JG001E).
1.
(Refer to SERVICING FIXTURE AND TOOLS)
Connect CH-1 of the oscilloscope to TP4002 (Envelope)
2.
and CH-2 to TP4001 (SW Pulse).
Press and hold the TRACKING-AUTO button on the
3.
remote control more than 2 seconds to set tracking to
center.
Trigger with SW Pulse and observe the envelope. (Refer
4.
to Fig. 2-1-A)
When observing the envelope, adjust the Adjusting Driver
5.
(JG005) slightly until the envelope will be flat.
Even if you press the Tracking Button, adjust so that
flatness is not moved so much.
Adjust so that the A : B ratio is better than 3 : 2 as shown
6.
in Fig. 2-1-B, even if you press the Tracking Button to
move the envelope (The envelope waveform will begin to
decrease when you press the Tracking Button).
Adjust the PG shifter during playback.
7.
(Refer to the ELECTRICAL ADJUSTMENTS)
NOTE
After adjustment, confirm and adjust A/C head.
(Refer to item 2-2)
Torque Gauge/Adapter
(JG002E/JG002B)
S Reel
T Reel Ass'y
Fig. 1-4
NOTE
If the torque is out of the range, replace the following
parts.
Check item
1-4
1-5
Replacement Part
Idler Ass'y/Clutch Ass'y
T Brake Spring/Tension Spring
Envelope
CH-3
Audio
Max
CH-1
Envelope
(TP4002)
CH-1
CH-2
Track
Track
CH-2
SW Pulse (TP4001)
(1)
(2)
Entrance Exit
A
B
Fig. 2-1-A
Max
D1-2
A : B = 3 : 2
Fig. 2-1-B
MECHANICAL ADJUSTMENTS
CONFIRMATION AND ADJUSTMENT OF AUDIO/
CONTROL HEAD
When the Tape Running Mechanism does not work well,
adjust the following items.
1.
Playback the VHS Alignment Tape (JG001C or JG001E).
(Refer to SERVICING FIXTURE AND TOOLS)
2.
Confirm that the reflected picture of stamp mark is
appeared on the tape prior to P4 Post as shown in Fig. 2-
2-A.
a)
When the reflected picture is distorted, turn the screw
1 clockwise until the distortion is disappeared.
b)
When the reflected picture is not distorted, turn the
screw 1 counterclockwise until little distortion is
appeared, then adjust the a).
3.
Turn the screw 2 to set the audio level to maximum.
4.
Confirm that the bottom of the Audio/ Control Head and
the bottom of the tape is shown in Fig. 2-2-C.
c)
When the height is not correct, turn the screw 3 to
adjust the height. Then, adjust the 1~3 again.
Audio/Control Head
Reflected picture of
Stamp Mark
P4 Post
2-3:2-2:
TAPE RUNNING ADJUSTMENT
(X VALUE ADJUSTMENT)
Confirm and adjust the height of the Reel Disk.
1.
(Refer to item 1-1)
Confirm and adjust the position of the Tension Post.
2.
(Refer to item 1-2)
Adjust the Guide Roller. (Refer to item 2-1)
3.
Confirm and adjust the Audio/Control Head.
4.
(Refer to item 2-2)
Connect CH-1 of the oscilloscope to TP4001, CH-2 to
5.
TP4002 and CH-3 to HOT side of Audio Out Jack.
Playback the VHS Alignment Tape (JG001U or JG001V).
6.
(Refer to SERVICING FIXTURE AND TOOLS)
Press and hold the TRACKING-AUTO button on the
7.
remote control more than 2 seconds to set tracking to
center.
Set the X Value adjustment driver (JG153) to the 4 of
8.
Fig. 2-2-B. Adjust X value so that the envelope waveform
output becomes maximum. Check if the relation between
Audio and Envelope waveform becomes (1) or (2) of Fig.
2-1-A.
Audio/Control Head
3
2
Audio/Control Head
Tape
Stamp Mark
Fig. 2-2-A
1
4
Fig. 2-2-B
0.25±0.05mm
Fig. 2-2-C
D1-3
MECHANICAL ADJUSTMENTS
3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
4
3
2
5
6
7
1
8
11
1. Tension Adjust
2. Tension Arm
3. Guide Roller
4. P1 Post
5. Audio/Control Head
6. X value adjustment driver hole
1012
10.
11.
12.
9
7.
P4 Post
8.
T Brake Spring
9.
T Reel Ass'y
Idler Ass'y
S-S Brake Spring
S Reel
D1-4
ELECTRICAL ADJUSTMENTS
Read and perform this adjustment when repairing the
circuits or replacing electrical parts or PCB assemblies.
1. BASIC ADJUSTMENT
CAUTION
When replacing IC's or transistors, use only specified
silicon grease (YG6260M).
(To prevent the damage to IC's and transistors.)
1-1: PG SHIFTER
CONDITIONS
MODE-PLAYBACK
Input Signal-Alignment Tape (JG001C)
INSTRUCTIONS
Connect CH-1 on the oscilloscope to TP4001 and CH-2
1.
to pin 19 of J4501.
Playback the alignment tape. (JG001C)
2.
Press and hold the Tracking-Auto button on the remote
3.
control more than 2 seconds to set tracking to center.
Press both CH UP button and STOP button on the set for
4.
more than 2 seconds. If the indicator ATR disappear's,
the adjustment is finished. (Refer to Fig. 1-1-A, B)
6.5H
CH-2
CH-1
Fig. 1-1-A
CH-2
CH-1
6.5H
Fig. 1-1-B
D2-1
ELECTRICAL ADJUSTMENTS
2. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE
T501
TP1002
TP1001
TU6001
TP4002TP4001
J4501
SYSCON PCB
D2-2
POWER DOES NOT TURN ON
TROUBLESHOOTING GUIDE
TROUBLESHOOTING GUIDE
Does DISPLAY light ?
Yes
Is the voltage at pin 20 of
IC1002 about 5V ?
Yes
Is the voltage at base of
Q502 about 5V ?
No Yes
Check the peripheral circuit to
pin 14 of T501.
No
No
Is F501 broken ?
No
Is the voltage at collector
of Q507 about 5.6V ?
No
Yes
Replace F501.
Check IC1002.
Check IC1002.
Replace Q510.
Yes
Replace Q502.
E-1
POWER SHUTS OFF
Insert a cassette and press
PLAY button.
TROUBLESHOOTING GUIDE
Does it Power off in about
3 seconds ?
No
Does it Power off in
about 6 seconds ?
No
Check POWER BLOCK.
Yes
Yes
Check TAPE LOADING,
LOADING BELT, DD MOTOR
and CYLINDER MOTOR.
Check REEL SENSOR and
BELT CAPSTAN.
E-2
CYLINDER NOT ROTATING
DURING PLAYBACK AND
RECORDING
TROUBLESHOOTING GUIDE
Is the voltage at pin
2 of CP1002 about
DC11.25V ?
Yes
In playback, is the voltage
at pin 5 of CP1002 about
DC1.52V ?
Yes
Replace CYLINDER MOTOR.
No
No
Check AT 12.6V line of
POWER BLOCK.
Check IC1002.
E-3
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