JVC HM-HDS4EK, HM-HDS4EX Service Manual
SERVICE MANUAL
HDD & S-VHS VIDEO RECORDER
HM-HDS4EK, HM-HDS4E
X
For disassembling and assembling of MECHANISM ASSEMBLY, refer to the SERVICE MANUAL No.86700(MECHANISM ASSEMBLY).
SPECIFICATIONS
GENERAL
Power requirement : AC 220 V – 240 Vd, 50 Hz/60 Hz
Power consumption
Power on : 42 W
Power off : 12 W
Temperature
Operating : 5°C to 40°C
Storage : –20°C to 60°C
Operating position : Horizontal only
Dimensions (WxHxD)
Weight : 5.3 kg
Input/Output : 21-pin SCART connectors:
HDD DECK VIDEO/AUDIO
Video format : MPEG2 (VBR)
Audio format : MPEG1 Layer2
Maximum recording time (approx.)
(DV) : 6 hours
(SP) : 20 hours
(LP) : 28 hours
(EP) : 56 hours
(SEP) : 80 hours
: 435 mm x 98 mm x 357 mm
IN/OUT x 1, IN/DECODER x 1
RCA connectors:
VIDEO IN x 1, AUDIO IN x 1,
AUDIO OUT x 1
S-Video connectors:
IN x 1, OUT x 1
DV connector:
IN/OUT x 1 (4-pin.IEEE1394
conformity, digital input/output)
(The specifications shown pertain specifically to the model HM-HDS4EX.)
VHS DECK VIDEO/AUDIO
Signal system : PAL-type colour signal and CCIR
Recording system : DA4 (Double Azimuth) head helical
Format : S-VHS/VHS PAL standard
Signal-to-noise ratio: 45 dB
Horizontal resolution
Frequency range : 70 Hz to 10,000 Hz (Normal audio)
Maximum recording time
(SP) : 240 min. with E-240 video cassette
(LP) : 480 min. with E-240 video cassette
TUNER/TIMER
TV channel storage capacity
Tuning system : Frequency synthesized tuner
Channel coverage : VHF 47 MHz – 89 MHz/
Memory backup time
monochrome signal, 625 lines
50 fields
scan system
: 250 lines (VHS)
400 lines (S-VHS)
20 Hz to 20,000 Hz (Hi-Fi audio)
: 99 positions (+AUX position)
104 MHz – 300 MHz/
302 MHz – 470 MHz
UHF 470 MHz – 862 MHz
: Approx. 10 min.
ACCESSORIES
Provided accessories
Specifications shown are for SP mode (VHS) unless otherwise
specified.
E.& O.E. Design and specifications subject to change without
notice.
: RF cable,
21-pin SCART cable,
Satellite Controller,
Infrared remote control unit,
“R6” battery x 2
ATTENTION
This recorder contains microcomputers. External electronic
noise or interference could cause malfunctioning. In such
cases, switch the recorder off and unplug the mains power
cord. Then plug it in again and turn the recorder on. Take out
the cassette. After checking the cassette, operate the unit as
usual.
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD
HM-HDS4EK,HM-HDS4EX D2HS1
No.82966
2003/06
TABLE OF CONTENTS
Section Title Page Section Title Page
Important Safety Precautions
INSTRUCTIONS
1. DISASSEMBLY
1.1 Before disassembling................................................... 1-1
1.1.1 SYSTEM INFORMATION display .......................... 1-1
1.1.2 STANDALONE mode .............................................1-1
1.1.3 Jig RCU mode........................................................ 1-1
1.1.3.1 Setting the Jig RCU mode ................................1-1
1.1.3.2 Setting the user RCU mode ..............................1-1
1.1.3.3 Table of Jig RCU cord .......................................1-1
1.1.4 Manually removing the cassette tape ................... 1-2
1.2 Removing the major parts ........................................... 1-3
1.2.1 How to read the procedure table........................... 1-3
1.2.2 Disassembly procedure ........................................ 1-3
1.3 Emergency display function ........................................ 1-6
1.3.1 Displaying the EMG information ........................... 1-6
1.3.2 Clearing the EMG history ...................................... 1-6
1.3.3
Details of the OSD display in the EMG display mode
1.3.4 EMG content description....................................... 1-8
1.3.5 EMG detail information<1> ................................... 1-9
1.3.6 EMG detail information<2> ................................. 1-10
1.3.7 EMG detail information<3> ................................. 1-10
1.4 Service position......................................................... 1-11
1.4.1 How to set the "Service position" ........................ 1-11
1.5 Mechanism service mode ......................................... 1-11
1.5.1 How to set the "Mechanism service mode"......... 1-11
1.5.2 How to exit from the "Mechanism service mode" 1-11
1.6 Maintenance and inspection ..................................... 1-12
1.6.1 Cleaning .............................................................. 1-12
1.6.2 Lubrication .......................................................... 1-12
1.6.3
Suggested servicing schedule for main components
2. MECHANISM
Refet to the SERVICE MANUAL No.86700 (MECHANISM ASSEMBLY)
3. ADJUSTMENT
3.1 Before adjustment....................................................... 3-1
3.1.1 Precaution ..............................................................3-1
3.1.2 Required test equipments ..................................... 3-1
3.1.3 Required adjustment tools .................................... 3-1
3.1.4 Color(colour) bar signal, color(colour) bar pattern 3-1
3.1.5 Switch settings ...................................................... 3-1
3.1.6
Manual tracking mode (Auto tracking ON/OFF) setting
3.1.7
EVR sdjustment ............................................................
3.2 Mechanism compatibility adjustment .......................... 3-2
3.2.1 Tension pole position............................................. 3-2
3.2.2 FM waveform linearity ........................................... 3-3
3.2.3 Height and tilt of the A/C head .............................. 3-3
3.2.4 A/C head phase(X-value)...................................... 3-4
3.3 Electrical Adjustment................................................... 3-4
3.3.1 Servo circuit .......................................................... 3-4
3.3.1.1 Switching point................................................. 3-4
3.3.1.2 Slow tracking preset......................................... 3-5
3.3.2 Video circuit........................................................... 3-5
3.3.2.1 EE Y/PB Y(S-VHS/VHS)level........................... 3-5
3.3.3 Audio circuit........................................................... 3-5
3.3.3.1 Audio REC FM ................................................. 3-5
3.3.4 Digital circuit........................................................... 3-6
3.3.4.1 HDD Y level.......................................................3-6
3.3.4.2 HDD C level ......................................................3-6
3.3.5 Syscon circuit ........................................................ 3-6
3.3.5.1 Timer clock....................................................... 3-6
... 1-7
.. 1-12
3-2
3-2
4. CHARTS AND DIAGRAMS
4.1 BOARD INTERCONNECTIONS ................................. 4-3
4.2 SW REG SCHEMATIC DIAGRAM...............................4-5
4.3 MAIN(VIDEO/N.AUDIO) SCHEMATIC DIAGRAM.......4-7
4.4 MAIN(S-SUB) SCHEMATIC DIAGRAM.......................4-9
4.5 MAIN(FMA) SCHEMATIC DAIGRAM ........................ 4-11
4.6 MAIN(AUDIO I/O) SCHEMATIC DIAGRAM...............4-13
4.7 MAIN(SYSCON) SCHEMATIC DIAGRAM.................4-15
4.8 MAIN(TUNER) SCHEMATIC DIAGRAM.................... 4-17
4.9 MAIN(FRONT), S-JACK, ADV.JOG AND LED/SW
SCHEMATIC DIAGRAMS........................................ 4-19
4.10 MAIN(CONNECTION) SCHEMATIC DIAGRAM......4-21
4.11 2D DIGITAL SCHEMATIC DIAGRAM ...................... 4-23
4.12 TERMINAL(V_IO) SCHEMATIC DIAGRAM............. 4-25
4.13 TERMINAL(I/O) SCHEMATIC DIAGRAM ................4-27
4.14 DEMODULATOR SCHEMATIC DAIGRAM..............4-29
4.15 DIGITAL(ASIC IF) SCHEMATIC DIAGRAM.............4-31
4.16 DIGITAL(MPEG DEC) SCHEMATIC DIAGRAM ...... 4-33
4.17 DIGITAL(MPEG ENC) SCHEMATIC DIAGRAM ...... 4-35
4.18 DIGITAL(CONNECTION) SCHEMATIC DIAGRAM . 4-37
4.19 DIGITAL(AUDIO AD/DA) SCHEMATIC DIAGRAM ..4-39
4.20 DIGITAL(DV_CODEC) SCHEMATIC DIAGRAM .....4-41
4.21 MAIN(ON SCREEN) SCHEMATIC DIAGRAM......... 4-43
4.22 MAIN CIRUCIT BOARD...........................................4-45
4.23 SW REG & 2D DIGITAL CIRCUIT BOARDS ...........4-47
4.24
TERMINAL & DEMODULATOR CIRCUIT BOARDS .
4.25 DIGITAL CIRCUIT BOARD ......................................4-49
4.26 S-JACK, ADV.JOG & LED/SW CIRCUIT BOARDS . 4-51
4.27
FDP GRID ASSIGNMENT AND ANODE CONNECTION .
4.28 VOLTAGE CHARTS .................................................4-53
4.29 WAVEFORMS .......................................................... 4-55
4.30 CPU PIN FUNCTION ...............................................4-56
4.31 SYSTEM CONTROL BLCOK DIAGRAM.................4-57
4.32 HDD BLOCK DIAGRAM ..........................................4-58
4.33 VIDEO BLOCK DIAGRAM .......................................4-59
4.34 AUDIO BLOCK DIAGRAM.......................................4-63
5. PARTS LIST
5.1 PACKING AND ACCESSORY ASSEMBLY<M1> ........5-1
5.2 FINAL ASSEMBLY<M2> ............................................. 5-2
5.3 MECHANISM ASSEMBLY<M4> ................................. 5-4
5.4 ELECTRICAL PARTS LIST......................................... 5-6
SW.REG BOARD ASSSEMLY<01>.................................5-6
MAIN BOARD ASSEMBLY<03> (incl. 2D D,DEMOD) .... 5-7
2D DIGITAL BOARD ASSEMBLY<05>......................... 5-14
TERMINAL BOARD ASSEMBLY<06> .......................... 5-15
A/C HEAD BOARD ASSEMBLY<12> ........................... 5-17
DEMOD BOARD ASSEMBLY<14> ............................... 5-17
S.JACK BOARD ASSEMBLY<29>................................ 5-18
ADV.JOG BOARD ASSEMBLY<38>............................. 5-18
LED/SW BOARD ASSEMBLY<47> ...............................5-18
DIGITAL BOARD ASSEMBLY<50>................................ 5-18
LOADING MOTOR BOARD ASSEMBLY<55>.............. 5-23
4-48
4-52
Important Safety Precautions
Connector
Metal sleeve
Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes
of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the
following precautions when a set is being serviced.
v
Precautions during Servicing
1. Locations requiring special caution are denoted by labels and
inscriptions on the cabinet, chassis and certain parts of the
product. When performing service, be sure to read and comply with these and other cautionary notices appearing in the
operation and service manuals.
2. Parts identified by the symbol and shaded ( ) parts are
critical for safety.
Replace only with specified part numbers.
Note: Parts in this category also include those specified to com-
ply with X-ray emission standards for products using
cathode ray tubes and those specified for compliance
with various regulations regarding spurious radiation
emission.
3. Fuse replacement caution notice.
Caution for continued protection against fire hazard.
Replace only with same type and rated fuse(s) as specified.
4. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
5. Use specified insulating materials for hazardous live parts.
Note especially:
1) Insulation Tape 3) Spacers 5) Barrier
2) PVC tubing 4) Insulation sheets for transistors
6. When replacing AC primary side components (transformers,
power cords, noise blocking capacitors, etc.) wrap ends of
wires securely about the terminals before soldering.
12. Crimp type wire connector
In such cases as when replacing the power transformer in sets
where the connections between the power cord and power
transformer primary lead wires are performed using crimp type
connectors, if replacing the connectors is unavoidable, in order to prevent safety hazards, perform carefully and precisely
according to the following steps.
1) Connector part number : E03830-001
2) Required tool : Connector crimping tool of the proper type
which will not damage insulated parts.
3) Replacement procedure
(1) Remove the old connector by cutting the wires at a point
close to the connector.
Important : Do not reuse a connector (discard it).
cut close to connector
Fig.3
(2) Strip about 15 mm of the insulation from the ends of
the wires. If the wires are stranded, twist the strands to
avoid frayed conductors.
15 mm
Fig.1
7. Observe that wires do not contact heat producing parts
(heatsinks, oxide metal film resistors, fusible resistors, etc.)
8. Check that replaced wires do not contact sharp edged or
pointed parts.
9. When a power cord has been replaced, check that 10-15 kg of
force in any direction will not loosen it.
Power cord
Fig.2
10. Also check areas surrounding repaired locations.
11. Products using cathode ray tubes (CRTs)
In regard to such products, the cathode ray tubes themselves,
the high voltage circuits, and related circuits are specified for
compliance with recognized codes pertaining to X-ray emission.
Consequently, when servicing these products, replace the cathode ray tubes and other parts with only the specified parts.
Under no circumstances attempt to modify these circuits.
Unauthorized modification can increase the high voltage value
and cause X-ray emission from the cathode ray tube.
Fig.4
(3) Align the lengths of the wires to be connected. Insert
the wires fully into the connector.
Fig.5
(4) As shown in Fig.6, use the crimping tool to crimp the
metal sleeve at the center position. Be sure to crimp fully
to the complete closure of the tool.
1.25
2.0
5.5
Fig.6
(5) Check the four points noted in Fig.7.
Not easily pulled free
Wire insulation recessed
more than 4 mm
Fig.7
Crimping tool
Crimped at approx. center
of metal sleeve
Conductors extended
1
S40888-01
v
d'
d
Chassis
Power cord,
primary wire
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been
returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.
1. Insulation resistance test
Confirm the specified insulation resistance or greater between power cord plug prongs and
externally exposed parts of the set (RF terminals, antenna terminals, video and audio input
and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
2. Dielectric strength test
Confirm specified dielectric strength or greater between power cord plug prongs and exposed
accessible parts of the set (RF terminals, antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc.). See table 1 below.
3. Clearance distance
When replacing primary circuit components, confirm specified clearance distance (d), (d’) between soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.
Fig. 8
4. Leakage current test
Confirm specified or lower leakage current between earth ground/power cord plug prongs
and externally exposed accessible parts (RF terminals, antenna terminals, video and audio
input and output terminals, microphone jacks, earphone jacks, etc.).
Measuring Method : (Power ON)
Insert load Z between earth ground/power cord plug prongs and externally exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and
following table 2.
Externally
exposed
accessible part
Z
V
Fig. 9
ab
c
5. Grounding (Class 1 model only)
Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts (Video in,
Video out, Audio in, Audio out or Fixing screw etc.).
Measuring Method:
Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications.
AC inlet
Earth pin
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
Exposed accessible part
Milli ohm meter
Fig. 10
Region
Japan
USA & Canada
Europe & Australia R 10 MΩ/500 V DC
Region Load Z
Insulation Resistance (R)
≤
R 1 MΩ/500 V DC
≥≥
1 MΩ R 12 MΩ/500 V DC
≤
Table 1 Specifications for each region
Grounding Specifications
Region
USA & Canada
Europe & Australia
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 1 kV 1 minute
AC 3 kV 1 minute
AC 1.5 kV 1 minute
(Class 2)
(Class 1)
Grounding Impedance (Z)
≤
Z 0.1 ohm
≤
Z 0.5 ohm
Clearance Distance (d), (d')
≤
d, d' 3 mm
≤
d, d' 4 mm
≤
d, d' 3.2 mm
≤
d 4 mm
≤
d' 8 mm (Power cord)
≤
d' 6 mm (Primary wire)
a, b, cLeakage Current (i)AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
Japan
USA & Canada
Europe & Australia
Table 2 Leakage current specifications for each region
1 kΩ
0.15 µF
1.5 kΩ
2 kΩ
50 kΩ
2
≤
i 1 mA rms Exposed accessible parts
≤
i 0.5 mA rms
≤
i 0.7 mA peak
≤
i 2 mA dc
≤
i 0.7 mA peak
≤
i 2 mA dc
Exposed accessible parts
Antenna earth terminals
Other terminals
S40888-01
Hard Disk Drive (HDD)
1. Hard Disk Drive (HDD) Handling Precautions
The HDD is a precision device f or use in reading and writing a large amount of data on or from a disk rotating at
a high speed. If it is not handled carefully, either abnormal operation may result or it may not be possib le to read
data. The HDD is sensitiv e to the following items and special care is required in saf eguarding against them when
handling an HDD. Also take care in handling a set incorporating an HDD.
1. Vibrations and impacts
2. Static electricity
3. Rough handling
1.1 Handling in transport, etc.
s Be sure to place the HDD in the manufacturer's specified package
carton before transport.
s When receiving a package containing an HDD, check that the pac k-
age carton is not damaged (such as having holes in the carton,
crushed corners, etc.).
s Do not impact the packaging carton when loading or unloading it.
s It is not permitted to use the inner package carton only for transport-
ing an HDD.
s Do not stack package cartons one upon another.
Be sure to package and
transport the HDDs correctly.
HDD
Do not throw or
drop packages.
1.2 Handling an HDD in the stand-alone status
s When handling an HDD on a hard workbench, place an antistatic
mat (rubber sheet) or similar object on the hard surface (to prevent
any impacts occurring between the HDD and bench).
s Do not stack the HDDs one upon another.
s Do not knock an HDD with a hard object (such as a screwdriver).
s Do not place an HDD on its side panel without using a support (do
not place an HDD in an unstable position).
1.3 Handling the installation of an HDD
s Place antistatic mats or similar sheets on all of the surfaces on which work is conducted or when the HDD
is transported.
s Do not permit the HDD to knock against the set's brackets.
s When screwing the brackets, be careful not to knock the HDD. When using a po wer scre wdriver , use a lo w-
shock model and arrange the tightening torque properly.
s When mounting an HDD in a HDD/VHS DUAL RECORDER, take care not to apply excessive force to the
brackets.
SECTION 1
DISASSEMBLY
1.1 Before disassembling.
1.1.1 SYSTEM INFORMATION display
By transmitting the code "7F" from JIG RCU, SYSTEM INFORMATION can be seen. Mainly, SYSTEM INFORMATION is
used for the version check. To exit SYSTEM INFORMATION,
transmit the code "7F" from JIG RCU again.
Fig. 1-1-1-1a SYSTEM INFORMATION DISPLAY
Jig RCU
[Data transmitting method]
Depress the “ ” ( 3 ) button
after the data code is set.
CUSTOM CODE
43: A CODE
53: B CODE
6F: C CODE
7F: D CODE
DATA CODE
INITIAL MODE
Fig. 1-1-1-1b Jig RCU [PTU94023B]
1.1.2 STANDALONE mode
When a HDD/VHS DUAL RECORDER AC cord is plugged into
a power outlet, the boot loader is read from the IC8204 (8M
FLASH ROM), which activates the HDD and reads the system
files in the HDD before getting ready for operation. In consequence, the HDD/VHS DUAL RECORDER cannot be turned
on if the HDD fails.
In case a failure of the HDD is in doubt, use the following procedure to switch the main power of the set ON using the VHS
section alone, by bypassing the HDD operation check.
(1) With the HDD/VHS DUAL RECORDER in the remote con-
trol standby status, transmit code "AE" from the Jig RCU
for more than 2 seconds.
When HDD/VHS DUAL RECORDER is STANDALONE
mode, the symbol("
") is flashing at the FDP.
(2) Transmit the code "AE" from Jig RCU again, then
STANDALONE mode is cancelled.
(3) Turn off the power, and pull out the power cord from power
outlet.
Note:
• When canceling STANDALONE mode, surely pull out the
AC cord from power outlet once to reset the Host CPU.
1.1.3 Jig RCU mode
This unit uses the following two modes for receiving remote
control codes.
1) User RCU mode : Ordinary mode for use by the user.
2) Jig RCU mode : Mode for use in production and servicing.
When using the Jig RCU, it is required to set the VCR to the
Jig RCU mode (the mode in which codes from the Jig RCU
can be received). As both of the above two modes are stored
in the EEPROM, it is required to set the VCR back to the User
RCU mode each time that an adjustment is made or to check
that the necessary operations have been completed. These
modes can be set by the operations described below.
Note:
• Confirm the RCU mode when exchanged parts. Since
some SERVICE PARTS sets the VCR to the Jig RCU mode
as initial setting.
1.1.3.1 Setting the Jig RCU mode
(1) Set the STANDALONE mode by transmitting the cord "AE"
from the Jig RCU.
(2) Transmit the cord “MENU”, “2” , “8”, “OK” from the provided
RCU.
When the VCR is set to the Jig RCU mode, the symbols
” ) is flashing at the FDP.
( “
1.1.3.2 Setting the User RCU mode
(1) Turn off the power.
(2) Transmit the cord "80" from the Jig RCU.
(3) Cancel the STANDALONE mode by transmitting the cord
"AE" from the Jig RCU again.
(4) Pull out the AC cord from the power outlet.
Note:
• Set the VCR to the STANDALONE mode before setting the
VCR to the Jig RCU mode.
• When canceling STANDALONE MODE, surely pull out the
AC cord from power outlet once to reset the host CPU.
1.1.3.3 Table of JIG RCU cord
Command Cord
SYSTEM INFORMATION DISPLAY ON/OFF
STANDALONE mode ON/OFF
Jig RCU mode OFF 80 unusable usable
EMERGENCY DISPLAY 59 unusable usable
MECHANISM SERVICE MODE ON
EVR mode (VHS) ON/OFF 57 unusable usable
EVR mode (HDD) ON/OFF 95 usable unusable
Flashing when VCR
is STANDALONE
mode
Flashing when VCR
is Jig RCU mode.
STANDALONE
mode
OFF mode ON
7F usable unusable
AE usable usable
E5 unusable usable
Jig RCU
Fig. 1-1-3-3a STANDALONE mode / Jig RCU mode
1-1
1.1.4 Manually removing the cassette tape
If you cannot remove the cassette tape which is loaded because of any electrical or mechanical failures, manually remove
it by taking the following steps.
(1) Unplug the power cord plug from the power outlet.
(2) Refer to the disassembly procedure of the VCR and perform
the disassembly of the major parts before removing the
mechanism assembly. (See Fig. 1-1-4a)
(3) Unload the pole base assembly by manually turning the gear
of the loading motor until the pole base assembly is hidden
behind the cassette lid. In doing so, hold the tape by the hand
to keep the slack away from any grease. (See Fig. 1-1-4b.)
In case of mechanical failures, while keeping the tension arm
assembly free from tension, pull out the tape on the pole
base assembly. Take the spring(a) of the pinch roller arm
assembly off the hook, and detach it from the tape.
(4) Remove the screw (a) of the side frame (L/R).
(5) Hold the slack tape and cassette cover together, lift the cas-
sette tape, top frame, cassette holder and side frames (L,
R) together from the rear and remove them by dis-engaging
the hooks (a) and (b).
Tension arm assembly
Pole base assembly
Fig. 1-1-4a
Pinch roller arm assembly
Screw(a)
Cassette tape
Hook(a)
Side frame(L)
Cassette holder
Top frame
Side frame(R)
Screw(a)
Hook(b)
Fig. 1-1-4c
(6) Take up the slack of the tape into the cassette. This com-
pletes removal of the cassette tape.
1-2
Spring(a)
Direction of unloading
Fig. 1-1-4b
1.2 Removing the major parts
1.2.1 How to read the procedure table
This table shows the steps for disassembly of the externally
furnished parts and board assemblies. Reverse these steps
when re-assembling them.
<Example>
Step/
Loc No.
[1] Top cover, 1-3a
(1) (2) (3) (4) (5)
Part Name
Bracket 2(S1c)
Fig.
No.
----------------------------------------
Point Note
4(S1a),(S1b),3(L1a), <Note 1a>
2(SD1a),(P1a),(W1a),
CN1(WR1a),
(1) Order of steps in Procedure
When reassembling, perform the step(s) in the reverse order.
These numbers are also used as the identification (location) No. of
parts Figures.
(2) Part name to be removed or installed.
(3) Fig. No. showing procedure or part location.
(4) Identification of part to be removed, unhooked, unlocked,
released, unplugged, unclamped or unsoldered.
P= Spring, W= Washer, S= Screw, L= Locking tab, SD= Solder,
CN**(WR**)= Remove the wire (WR**) from the connector (CN**).
Note:
•
The bracketed ( ) WR of the connector symbol are assigned nos. in priority order and do not correspond to
those on the spare parts list.
(5) Adjustment information for installation
1.2.2
Disassembly procedure
Step/
Loc No.
[1] TOP COVER
[2] FRONT
[3]
[4] REAR PANEL
[5]
[6] HDD
[7]
[8]
Part Name
PANEL assembly
(S JACK board assemby)
(LED/SW board assembly)
(ADV.JOG board assembly)
MECHANISM assembly
(DRUM assembly)
(INERTIA PLATE) 4(L3a)
(ROLLER ARM assembly)
(FAN MOTOR) 2(S4d)
MAIN board assembly
(TERMINAL board assembly)
DIGITAL board assembly
SW REG board assembly
Fig.
No.
1-2-2d
1-2-2a
1-2-2d
--------------------------
--------------------------
1-2-2d
--------------------------
1-2-2b
1-2-2c
--------------------------
--------------------------
1-2-2d
--------------------------
1-2-2d
--------------------------
1-2-2d
1-2-2d
1-2-2d
Point Note
2(S1a), 4(S1b)
CN7003(WR2a), <Note 2a>
CN3011(WR2b), <Note 2b>
2(L2a), (L2b), 5(L2c)
2(S2b)
5(S2c),3(S2d)
KNOB assembly
CN2001(WR3a), <Note 2a>
3(S3a), (S3b), <Note 3a>
CN(WR3b), <Note 3b>
(S3x), (S3y), (S3z)
(L3b), (P3a)
CN5304(WR4a) <Note 2a>
2(S4a),6(S4b)
(L4a),3(L4b)
CN701(WR5a), <Note 2a>
CN7509(WR5b),
CN7511(WR5c),
3(S5a)
CN901(WR5d)
CN903
CN702
CN703
CN704
CN705
CN706
(WR6a),(WR6b), <Note 2a>
(S6a),4(S6b),4(S6c),
(WR6c),(WR6d),
SHIELD PLATE(WIND)
BRACKET(HDD)x2
CN5305(WR7a), <Note 2a>
2(S7a),2(S7b)
4(S8a)
,
1-3
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