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SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.82933
2003/06
D-VHS DIGITAL RECORDER
82933
2003
06
HM-DH40000U
SPECIFICATION
GENERAL
VIDEO/AUDIO (D-VHS)
VIDEO/AUDIO (S-VHS/VHS)
TUNER
TIMER
CONNECTOR
ACCESSORIES
START
STOP
DATE
PLAY
REW
REC
STOP
PAUSE
FF
TV/VCR CH
C. RESET
CANCEL
DBS
DAILY
WEEKLY
ENTER
REC
LINK
REC
SPEED
SKIP
SEARCH
MENU
NAVI
SUBTITLE
VCR
PROGRAM
PROG.CHECK
TIMER
A/B/C/D
TV
TV/VCR
CABLE
/DBS
POWER
REMOTE
CODE
. , ?
ABC
DEF
GHI
JKL
MNO
PQRS
TUV
WXYZ
AUX
TV
VOL
A.MO
NITOR
DISPLAY
OSD
ENTER
BACKK
MTP
NTSC
Power requirement
AC 120 V~, 60 Hz
Power consumption
Power on
42 W
Power off
18 W
Temperature
Operating
5°C to 40°C (41°F to 104°F)
Storage
-20°C to 60°C (-4°F to 140°F)
Operating position
Horizontal only
Dimensions (W x H x D)
435 mm x 94 mm x 383 mm
(17-3/16" x 3-3/4" x 15-1/8")
Weight
5.5 kg (12.2 lbs)
Maximum recording time
D-VHS (HS)
210 min. with DF-420 video cassette
D-VHS (STD)
420 min. with DF-420 video cassette
D-VHS (LS3)
1260 min. with DF-420 video cassette
D-VHS (LS5)
2100 min. with DF-420 video cassette
S-VHS/VHS (SP)
210 min. with ST-210 video cassette
S-VHS/VHS (EP)
630 min. with ST-210 video cassette
Video format
MPEG2 standard
Audio format
Encode MPEG1 Layer2
Decode MPEG1 Layer2/Dolby Digital
LINEAR PCM (HS/STD)
Track composition
Tape speed
33.4 mm/sec (HS mode)
16.67 mm/sec (STD mode)
5.55 mm/sec (LS3 mode)
3.33 mm/sec (LS5 mode)
Head azimuth
±30 deg
Drum rotation
1800 rpm
Tracking system
CTL track system
Recording specification
Main data input rate
28.2 Mbps (HS mode)
14.1 Mbps (STD mode)
4.7 Mbps (LS3 mode)
2.8 Mbps (LS5 mode)
Interface
IEEE1394 compliant DTCP digital copy
protection compatible
Format
S-VHS/VHS NTSC standard
Signal system
NTSC-type color signal and
EIA monochrome signal, 525 lines/60 fields
Recording/Playback
system
DA-4 (Double Azimuth) head helical scan
system
Signal-to-noise ratio
45 dB
Frequency range
Normal audio
70 Hz to 10,000 Hz
Hi-Fi audio
20 Hz to 20,000 Hz
Tuning system
Frequency-synthesized tuner
Channel coverage
VHF
Channels 2-13
UHF
Channels 14-69
CATV
113 Channels
Clock reference
Quartz
Program capacity
1-year programmable timer/24 programs
Memory backup time
Approx. 10 min.
Input/Output
i.LINK IN/OUT (DV IN) x 2 (4-pin, S400)
RCA connectors (IN x 3, OUT x 2)
S-video connectors (IN x 3, OUT x 2)
Component video OUT (Y, PB/CB, PR/CR) x 1
Digital OUT (optical) x 1
Provided accessories
Infrared remote control unit, "AA" battery x 2,
Audio cable, RF cable (F-type),
S-video cable (4-pin), Controller
D2D4


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1-2 (No.82933)
TABLE OF CONTENTS
1
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.1
SAFTY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2.1
Disassembly flow chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2.2
How to read the disassembly and assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2.3
Disassembly/assembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
2.4
Service position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
2.5
Mechanism service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
2.6
Jig RCU mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
2.7
Opening on the chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
2.8
Emergency display function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
3
MECHANISM ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
3.1
Before starting repair and adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
3.2
Replacement of major parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
3.3
Compatibility adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
4
ELECTRICAL ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
4.1
Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
4.2
Servo circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32
4.3
Audio circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34
4.4
Digital circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-34
CHARTS AND DIAGRAMS
BOARD INTERCONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
SW.REG AND MAIN (REG) SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
MAIN (VIDEO/AUDIO) SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
MAIN (SYNC DET) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
MAIN (S-SUB) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
MAIN (FMA/DEMOD) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
MAIN (SYSCON) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
MAIN (TUNER) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
MAIN (TERMINAL) AND TERMINAL SUB SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . 2-19
RESET SW,REC SAFETY/D.CASS SW,DISPLAY AND JACK SCHEMATIC DIAGRAMS . . . . . . . . 2-21
PRE/REC SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
DIGITAL(SUB CPU) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
DIGITAL(DMAIN) SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
DIGITAL(DMAIN IF) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29
DIGITAL(E5) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
DIGITAL(E5 DDR) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33
DIGITAL(MEMORY) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35
DIGITAL(DIGITAL IF) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
DIGITAL(VIDEO) SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
DIGITAL(AUDIO) SCHEMATIC DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41
SW.REG, DISPLAY, REC SAFETY, JACK AND TERMINAL SUB CIRCUIT BOARDS . . . . . . . . . . . 2-43
MAIN CIRCUIT BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
COMPONENT PARTS LOCATION GUIDE <MAIN> LPB10177-001C. . . . . . . . . . . . . . . . . . . . . . . . 2-47
PRE/REC CIRCUIT BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48
COMPONENT PARTS LOCATION GUIDE <PRE/REC> LPB10174-001B . . . . . . . . . . . . . . . . . . . . 2-48
DIGITAL CIRCUIT BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
COMPONENT PARTS LOCATION GUIDE <DIGITAL> LPB10175-001B . . . . . . . . . . . . . . . . . . . . . 2-51
REMOTE CONTROLLER SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
FDP GRID ASSIGNMENT AND ANODE CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53
CPU PIN FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54
VOLTAGE CHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-55
WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
VIDEO BLOCK DIAGRAM (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57
VIDEO BLOCK DIAGRAM (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
AUDIO BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61
SYSTEM CONTROL BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63
D-VHS BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-65
PARTS LIST
1. EXPLODED VIEW
1.1 PACKING AND ACCESORY ASSEMBLY<M1> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
1.2 FINAL ASSEMBLY<M2> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
1.3 MECHANISM ASSEMBLY<M4> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
2. PARTS LIST
SWITCHING REGULATOR BOARD ASSEMBLY<01>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
MAIN BOARD ASSEMBLY<01> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
A/C HEAD BOARD ASSEMBLY<12> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
DISPLAY BOARD ASSEMBLY<28> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
REC SAFETY BOARD ASSEMBLY<32> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
JACK BOARD ASSEMBLY<36> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
PRE/REC BOARD ASSEMBLY<43>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
DIGITAL BOARD ASSEMBLY<50>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
TERMINAL SUB BOARD ASSEMBLY<52> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
LOADING MOTOR BOARD ASSEMBLY<55> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24


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(No.82933)1-3
SECTION 1
PRECAUTIONS
1.1 SAFTY PRECAUTIONS
Prior to shipment from the factory, JVC products are strictly in-
spected to conform with the recognized product safety and elec-
trical 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.
1.1.1 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
comply with X-ray emission standards for products
using cathode ray tubes and those specified for com-
pliance 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:
· Wires covered with PVC tubing
· Double insulated wires
· High voltage leads
(5) Use specified insulating materials for hazardous live parts.
Note especially:
· Insulation Tape
· PVC tubing
·Spacers
· Insulation sheets for transistors
· Barrier
(6) When replacing AC primary side components (transformers,
power cords, noise blocking capacitors, etc.) wrap ends of
wires securely about the terminals before soldering.
Fig.1-1-1
(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.
Fig.1-1-2
(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 volt-
age circuits, and related circuits are specified for compliance
with recognized codes pertaining to X-ray emission. Conse-
quently, 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.Unautho-
rized modification can increase the high voltage value and
cause X-ray emission from the cathode ray tube.
(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 trans former primary lead wires are performed using
crimp type connectors, if replacing the connectors is un-
avoidable, in order to prevent safety hazards, perform care-
fully and precisely according to the following steps.
· Connector part number :E03830-001
· Required tool : Connector crimping tool of the proper
type which will not damage insulated parts.
· Replacement procedure
a) Remove the old connector by cutting the wires at a
point close to the connector.
Important : Do not reuse a connector (discard it).
Fig.1-1-3
b) 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.
Fig.1-1-4
c) Align the lengths of the wires to be connected. Insert
the wires fully into the connector.
Fig.1-1-5
d) As shown in Fig.1-1-6, 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.
Fig.1-1-6
e) Check the four points noted in Fig.1-1-7.
Fig.1-1-7
Power cord
cut close to connector
15 mm
Connector
Metal sleeve
1.2
5
2.0
5.5
Crimping tool
Not easily pulled free
Crimped at approx. center
of metal sleeve
Conductors extended
Wire insulation recessed
more than 4 mm


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1-4 (No.82933)
1.1.2
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 compli-
ance with safety standards.
(1) Insulation resistance test
Confirm the specified insulation resistance or greater be-
tween power cord plug prongs and externally exposed
parts of the set (RF terminals, antenna terminals, video and
audio input and output terminals, microphone jacks, ear-
phone 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 Fig.1-1-11 below.
(3) Clearance distance
When replacing primary circuit components, confirm spec-
ified clearance distance (d), (d') between soldered termi-
nals, and between terminals and surrounding metallic
parts. See Fig.1-1-11 below.
Fig.1-1-8
(4) Leakage current test
Confirm specified or lower leakage current between earth
ground/power cord plug prongs and externally exposed ac-
cessible parts (RF terminals, antenna terminals, video and
audio input and output terminals, microphone jacks, ear-
phone 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 Fig.1-1-9 and following Fig.1-1-12.
Fig.1-1-9
(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 Fig.1-1-10 and grounding
specifications.
Fig.1-1-10
Fig.1-1-11
Fig.1-1-12
NOTE :
These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
ab
c
V
A
Externally
exposed
accessible part
Z


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(No.82933)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 Disassembly flow chart
This flowchart lists the disassembling steps for the cabinet parts
and P.C. boards in order to gain access to item(s) to be serviced.
When reassembling, perform the step(s) in reverse order. Bend,
route and dress the flat cables as they were originally laid.
2.2 How to read the disassembly and assembly
(1) Order of steps in Procedure
When reassembling, perform the step(s) in the reverse or-
der.
These numbers are also used as the identification (loca-
tion) 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 corre-
spond to those on the spare parts list.
(5) Adjustment information for installation
2.3 Disassembly/assembly method
Top cover, Bracket
Front panel assembly
Switching regulator board assembly
Digital board assembly
PRE/REC board assembly
Drum assembly
Mechanism assembly
REC safety board assembly,
Display board assembly,
Jack board assembly
Main board assembly
Bottom cover
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
(1)
(2)
(3)
(4)
(5)
Step/
LocNo.
Part Name
Fig.
No.
Point
Note
[1]
Top cover,
D1 4(S1a),(S1b),3(L1a),
<Note 1a>
2(SD1a),(P1a),(W1a),
CN1(WR1a),
Bracket
2(S1c)
<Example>
[1]
Top cover, Bracket
D1 4(S1a), (S1b), 2(S1c)
[2]
Front panel assembly D2 CN901(WR2a),
4(L2a), 2(L2b),
3(L2c)
<Note 2a>
<Note 2b>
[3]
Switching regulator
board assembly
D3 CN5303(WR3a),
CN5301
CN5305
3(S3a)
<Note 2a>
[4]
Digital board assembly D4 CN401(WR4a),
CN402(WR4b),
CN8003(WR4c),
CN9301(WR4d),
CN9001(WR4e),
CN8001(WR4f),
CN8002(WR4g)
3(S4a), (S4b),
<Note 2a>
[5]
PRE/REC board
assembly
D5 (S5a), (S5b),
L5a(WR5a),
Shield case(PRE),
CN604(WR5b),
CN603
<Note 2a>
<Note 4a>
[6]
Drum assembly,
D6 CON1(WR6a),
<Note 2a>
<Note 5a>
CN1(WR6b),
(S6a), (S6b), (S6c)
(Inertia plate),
4(L6a)
(Roller arm assembly),
(P6a), (L6b)
(Cleaner assembly)
(L6c)
[7]
Mechanism assembly D7 CN1(WR7a), (S7a),
(S7b), (S7c), (S7d),
S7e(WR7b), 2(L7a)
<Note 2a>
<Note 6a>
[8]
REC safety board
assembly,
D8 (S8a)
<Note 2a>
<Note 7a>
CN7002(WR8a),
CN7005(WR8b)
4(L8a)
[9]
Main board assembly
D9 2(S9a)
[10] Bottom cover
D10 (S10a), 2(S10b),
4(L10a), 3(L10b)
Step/
LocNo.
Part Name
Fig.
No.
Point
Note
Display board assembly