JVC TD-W777A User manual

TD-W7 7 7 A/B/C/E/G/J/U
JVC
SERVICE MANUAL
Area
suffix
|
A
Austalia
|
ic
Canada
iE
Continental
Europe
|
iG
W.
Germany
lJ
U.S.A.
|
u
Other
Greas
Page Page
1] n 2 fio] Location of P.C. Board Parts... 20. 0.0 20000.. 16
fa Reatures: ocd d. ole oe ele ep ee eR aS) PCBoard:Parts:bistasy f.4 82. Shee eee 17
[3] Specifications ......00.000 00. 0b eee ers fil] Exploded View of Mechanism Assembly ....... 21
[4] Names of Controls and Their Functions. . . moped Mechanism Assembly Parts List 2.0.0.0... 23
[5}-“ Location of Main-Parts’ sce. deere ee eee 5 fi2]. Exploded View of Enclosure Assembly ........ 22
[6] Removal of Main Parts. ......0...... ee eee 3: Enclosure Assembly Parts List ......0..00.4. 24
[7] Main Adjustments... 0.000000 .020 000002 eae 9 fi3]. Block Diagram’... ee OK
Wiring Connections... 0.0.00... 0000005. 13 fi4] Packing Illustration and Parts List ©... 0.0.00. 26
[9] Standard Schematic Diagrams ......0...00... 1 Accessories . 0... ee ees 27
April. 1988

: TD-W777 A/B/C/E/G/3/U |
[1| Safety Precautions
.
The
design
of
this
product
contains
special
hardware
and
may
circuits
and
components
specially
for
safety
purposes.
Warning
. This equipment has been designed and manufactured to meet international safety standards.
. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
. Repairs must be made in accordance with the relevant safety standards.
. It is essential that safety critical components are replaced by approved parts.
. If mains voltage selector is provided, check setting for local voltage.
aOhWHND
For continued protection, no changes should be made to the original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to those used in the original circuits. Service should be per-
formed by qualified personnel only.
.
Alterations
of
the
design
or
circuitry
of
the
product
should
not
be
made.
Any
design
alterations
of
the
product
should not be made. Any design alterations or additions will void the manufacturer’s warranty and will further
relieve
the
manufacturer
of
responsibility
for
personal
injury
or
property
damage
resulting
therefrom.
. Many electrical and mechanical parts in the product have special safety-related characteristics. These characteristics
are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by
using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features
are identified by ( A\) on the Schematic Diagram and Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety characteristics as the recommended replacement part shown in
the Parts List of Service Manual may create shock, fire, or other hazards.
. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from
live
parts,
high
temperature
parts,
moving
parts
and/or
sharp
edges
for
the
prevention
of
electric
shock
and
fire
hazard.
When
service
is required,
the
original lead
routing
and dress
should
be
observed,
and
it
should
be
confirmed
that
they
have
been
returned
to
normal,
after
re-assembling.
. Leakage current check (Electrical shock hazard testing)
After re-assembling the product, always perform an isolation check on the exposed metal parts of the product
(antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.
Do not use a line isolation transformer during this check.
e Plug the AC line cord directly into the AC outlet. Using a ‘Leakage Current Tester’, measure the leakage current
from each exposed metal part of the cabinet, particularly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage current must not exceed 0.5 mA AC (r.m.s.).
e Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having 1,000 ohms per volt or more sensi-
tivity in the following manner. Connect a 1,500 2 10 W resistor paralleled by a 0.15 uF AC-type capacitor be-
tween an exposed metal part and a known good earth ground.
Measure
the
AC
voltage
across
the
resistor
with
the
AC
VOLTMETER
AC
voltmeter.
a
(Having 1000
ohms/volt,
: 7 or more sensitivity.)
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a Ca Geral
return path to the chassis, and measure the AC volt- oT BE SAC TYPE
age across the resistor. Now, reverse the plug in the ae Rinceaneiurabe
AC outlet and repeat each measurement. Any voltage © on each exposed
measured
must
not
exceed
0.75
V
AC
(r.m.s.).
This
15002
10W
metal
part.
corresponds to 0.5 mA AC (r.m.s.). Gadd eeahgiound
2 (No. 4292)

Features
@ Auto-reverse mechanism in both decks
e Flip reverse head system
e Quick reverse mechanism using infrared sensor
@ 2-motor full logic mechanism in both decks
e Motor used exclusively for the mechanism drive
® Continuous playback
@ Dolby B-C noise reduction system
e Built-in MPX filter
@ Centerized display using two-colored LCDs
e 2-color peak level indicator
e Electronic counter displays for the two tape mecha-
nism
e Dubbing mode indicator
Specifications
Type : Stereo double cassette deck
Track system : 4-track, 2-channel
Tape speed : 1-7/8 inch/sec (4.8 cm/sec)
Frequency response : (—20 dB recording)
Metal tape; 20—17,000Hz
30—16,000 Hz (+3 dB)
Chrome tape; 20—17,000 Hz
30—15,000 Hz (+3 dB)
Normal! tape; 20 —16,000 Hz
30—15,000 Hz (+3 dB)
: 58 dB (S = 1 kHz, K3 = 3%, N= A-
weighted, Metal tape)
The S/N is improved by about
15 dB at 500 Hz and by max. 20 dB
at 1kHz ~10kHz with Dolby C NR
on and improved by 5dB at 1kHz
and by 10dB at above 5 kHz with
Dolby B NR on.
Improvement t of MOL : 4dB at 10 kHz with Dolby CNR
on on
Wow and flutter : 0.08% (WRMS)
Channel separation : 40 dB (1 kHz)
Crosstalk : 60 dB (1 kHz)
Harmonic distortion : K3;0.5%, THD; 1.0%
(metal tape, 1 kHz, 0 VU)
Heads
:
Deck
A;
METAPERM
head
for
play-
back x 1
SN ratio
Deck B; METAPERM head for record-
ing/playback, 2-gap ferrite
head for erasure
Combination head x 1
—TD-W777 weceann
® Auto tape select mechanism for both decks A and B
@ Timer start mechanism
@ Microcomputer-controlled mechanisms
e
Auto
record
muting
and
synchro
record
muting
(deck
B)
®@ Single music scan mechanism for either direction
“Under license from Staar S.A., Brussels, Belgium”
®@ Input balance slide control and input level slide control
®@ Synchro start (normal-/high-speed) dubbing
@ COMPU LINK control system
Motors : Electronic governed DC motor for
capstan x 1
DC motor for reel x 1
DC motor for mechanism drive X 1
(For both decks A and B)
Fast forward/
Rewind time
Input terminals
: Approx. 100 sec with C-60 cassette
LINE IN : Min. input level; 80 mV
(X1 circuit) Input impedance; 50 kQ
Output terminals
LINE OUT : Output level; 300 mV
(X1 circuit) Output impedance; 5 kQ
PHONES x 1 : Output level; 0.3 mW/8 Q2
Matching impedance; 8 Q ~ 1kQ
Other terminals : COMPU LINK-1/SYNCHRO x 2
Power requirement
TD-W777A/B_ : AC 240 V, 50/60 Hz
TD-W777E/G :AC220V, 50/60 Hz
TD-W777C/J =: AC 120 V, 60 Hz
TD-W777U : AC 230/127/110 V, 50/60 Hz
Power consumption : With power switch on; 18 W
With power switch standby; 1.2 W
Dimensions (W x H x D): 435 x 133 x 280 mm
(17-3/16" x 5-1/4” x 11-1/16")
Weight : 4.5 kg (10 Ibs)
Accessories :Pinplugcord.............. 2
Remote cable.............. |
Design and specifications are subject to change without notice.
(No. 4292) 3

TD-W777 ascrecy |
[4]
Names
of
Controls
and
Their
Functions
CORR)
yo
ES Pra
i
i
coe
- >,
! > a,
<J QUICK REVERSE [> | |
ua oe
rae a f30 naan Comsren
~1 EL OO SP San i
I =? WD) fswg
f [oem aoOOMes BOOS
Po [ommaomaaem SOMO \oeo
F | =
y f
— >] § a
rs F me
.
FEC! PLAY BACK DEC B
ary a
7 Ul
Ca a HM A
INPUT LEVEL
wmeletede
Le ae
REVERSE MODE switch
TIMER switch
POWER switch
Cassette holder (Deck A)
Multi mode display
COUNTER RESET buttons
Cassette holder (Deck B)
DOLBY NR switch
Headphone jack (PHONES)
Cassette operation buttons (Deck A)
Input BALANCE control
SYNCHRO DUBBING buttons
INPUT LEVEL control
Cassette operation buttons (Deck B)
@@880E0000909009
4 (No. 4292)

TD-W777 weceesu
'5| Location of Main Parts
Power Transformer Pin Jack
DOLBY NR Board Ass‘y
Main P.C. Board Ass’y
Mechanism Ass’y[A] Mechanism Ass’‘y [B]
Front Section Rear Section
Capstan motor Play and Fast Forward/Rewind Arm Ass’y Motor for Cam Capstan motor
Supply reel disk | Take up reel disk assy Motor for reel disk
Belt
Playback Head
(Mechanism A)
Rec/Play & Erase head
Cassette
Guide
(Mechanism
B)
Cassette Guide
Pinch roller arm Ass’y Flywheel Ass’y Flywheel motor Bracket
Head mounting base Ass’y Pinch roller Cam
Fig. 5-1
(No. 4292) 5

TD-W777 A/B/C/E/G/3/U |
Removal of Main Parts
1. Removal of Enclosure parts
(1) Top cover
1) Remove four screws M2 retaining the both sides of
the top cover.
2) Remove two screws 8) retaining the back side of the
top cover.
Top Cover
(2) Bottom cover
Remove two screws @ retaining the bottom cover.
(3) Rear panel
1) Remove two screws 40, ) retaining the rear panel
and side chassis.
2) Remove a screw @2 retaining the synchro terminal.
3) Remove two screws retaining the heat sink.
4) Remove a screw retaining the pin jack.
(4) Side chassis (L)
1) Remove two screws retaining the front pane! and
side chassis (L).
2) Remove a screw 40 retaining the rear panel.
(5) Side chassis (R)
1) Remove two screws @ retaining the front panel.
2) Remove a screw (5) retaining the main board ass’y.
(6) Power board ass’y
1) Remove two screws retaining the voltage selector.
2) Remove four screws , @ retaining the power
transformer.
(7) Main P.C. board ass’y
Remove a screw retaining the mechanism and main
P.C. board.
(8) Mechanism ass’y
1) Remove four screws @1), Q2 retaining the mecha-
nism ass’y [A].
2) Remove four screws @3) ; Q4 retaining the mecha-
nism ass’y [B].
6 (No. 4299)
Synchro
Terminal
Main P C. Board
Ass'y

@ Mechanism Section
Mechanism [B]: Refer to the description about REC/PB
mechanism.
® Head ass’y
Remove two screws @ retaining the head ass’y.
For removing the head only, remove two screws securing
it from the head gap side. (To do the work easily, heat
the bonded parts beforehand.)
e Re-assembling
1. Set the head lever to be positioned as shown in the
figure.
2. Arrange head wires and apply locking bond.
In case of Mechanism /A|
Loosen a screw on the left side of the PB head and
remove a screw on the right side.
For a dummy head, remove a screw securing it.
@ Pinch roller ass’y
Push a pawl catching the pinch roller ass’y on the chassis
in the direction of the arrow mark (see figure) to remove
it.
@ Flywheel bracket (FM bracket)
Remove two screws @) securing the flywheel bracket,
from the both sides.
When the FM bracket is removed, the main belt is dis-
engaged at the same time.
The capstan motor and flywheel ass’y can be replaced by
this procedure.
®@ Disk base unit
Remove three screws @), @ and ®© securing the disk
base unit,
Belt
TD-W7 7 7 A/B/C/E/G/J/U
Fig. 6-11
(No. 4292) 7

TD-W777 wevcrercisu
e Re-assembling of disk base unit
1, Re-assemble the disk base unit in order of numbers (D—
@®) shown in the figure.
a) When setting the cam gear (1), make sure of its posi-
tioning so that the gear’s wide side makes aright angle
with the disk while its small side is in parallel with the
disk as shown in the figure.
b) Engage the gears @), @) and @ each other.
c) When putting back the head base cam 5, pay careful
attention to positioning it so that big and small con-
caves are paralleled with the disk.
2. Turn the gear 2 @ in the direction of the arrow mark,
and stop turning when the cam gear @ and the head
base cam () are free from each other (slit of the head
base cam can be seen on the opposite side).
e Fixing disk base unit to chassis
Join together the head base cam and the pinch roller
cam so as to catch on each other by the slits.
Helical Gear —
Pinch Roller Cam
8 (No. 4292)
Gear's wide side makes a righ
angle with the disk.
Gear’s small side is paralleled wi
the disk.
Fig. 6-12
4
( elical Gear
Gear 4)
Gear 2
Fig. 6-13
Small hole
Put together by fitting the rugged-
ness in each other.
Fig. 6-14
Set head base cam and pinch roller
cam by the slits.
Fig. 6-15

TD-W77 7 A/B/C/E/G/J/U
Main Adjustments
1. Equipment and measuring instruments used for adjustments
1) Electronic voltmeter 7) Distortion meter (bandpass filter)
2) Audio frequency oscillator 8) Torque testing cassette gauge, CGT-N
(range: 50—20 kHz and output 0 dB with impedance of 600 2) 9) Wow flutter meter
3) Attenuator (impedance: 600 22) 10) Frequency counter
4)Standard tape for REC/PB
Maxell UD1 (TS-9) — Normal (SF) tape
TDK SA ’ — Chroma (SA) tape — or equivalent = Power sources
JVC ME — Metal tape Set the line voltage selector switch to 240 V/230 V/
5) Reference tape for playback (JVC Test Tape) 220 V/127 V/120 V/110 V according to your local
VTT712 (for tape speed, wow flutter adj.) voltage.
V11724
(for
playback
level)
AC
240
V,
50/60
Hz
(TD-W777A/B)
VTT739 (for playback frequency response) AC 220 V, 50/60 Hz (TD-W777E/G)
6)
Resistor
600
Q
(for
attenuator
matching)
AC
230
V/127
V/110
V,
50/60
Hz
(TD-W777U)
2. Mechanism adjustment procedure ® Notice: 0 dBs = 0.775 (V)
Item | Adjustment Adjus ring Standard Remarks
point value
Adjusting 1. Connect a frequency counter to the | Deck {A): Normal For adjusting high speed, TP bus
motor speed LINE OUT terminals. Normal; VR702 speed: wire should be grounded. Adjust
2. Play back the VTT712 test tape. High; VR701 Deck [A]; high speed after perform normal
3. Adjust for deck [A]: 3000 + 15 Hz! speed.
Adjust VR701 for normal speed at {Deck [B): Deck [B];
3000 Hz, and VR702 for high speed at | Normal; VR704| 3000 +15 Hz
6000 Hz. High; VR703
High speed:
Adjust for deck [B]: Deck (Al:
Adjust VR703 for normal speed at 6000 +15Hz
3000 Hz, and VR704 for high speed at Deck [B];
6000 Hz. 6000 +15 Hz
Checking Connect a wow and flutter meter to LINE 0.15% If the reading becomes moving
wow and OUT terminals. Play back the VTT712 (WRMS) jvalue even if confirming to the
flutter test tape. Check to see if the reading of standard, a reclaim may be raised.
the meter is within 0.15% (WRMS). Repairs are necessary.
Checking Employ a torque testing cassette tape for 30—70 gr-cm | If the standard torque is not ob-
playback
the
checking,
or
remove
the
cassette
cover
tained,
replace
the
take-up
disk
torque
and
use
a
torque
gauge.
|
assembly.
Checking
Measure
the
torque
in
the
fast
forward
70—200
gr-cm|
If
the
standard
torque
is
not
ob-
fast
forward
|
mode
in
the
same
manner
as
in
the
above.
tained,
perform
the
following.
torque
1.
Clean
the
capstan
belt,
the
idler circumference, the motor
pulley, the take-up reel disk
circumference, the flywheel
circumference, etc.
2. Replace the belt and idler.
Checking
Measure
the
torque
in
the
rewind
mode
ies
gr-cm|
If
the
standard
torque
is
not
ob-
rewind
in
the
same
manner
as
in
the
above.
tained,
clean
the
capstan
belt,
torque idler, motor pulley, flywheel cir-
cumference, rewinding idler cir-
cumference, left reel disk circum-
ference, etc.
(No. 4292) 9

TD-W7 7 7 A/B/C/E/G/J/U
Adjustment
Standard
value
Adjusting
point
Remarks
. Connect an electronic voltmeter to the
LINE OUT terminals.
. Playback the VTT 703 test tape.
. Adjust the head angle with the screw
(FWD and REV) until the reading of
the electronic voltmeter becomes maxi-
mum for both channels.
Adjusting
Head
azimuth
Adjust the head angle with the screw
® until the reading of the electronic
voltmeter becomes maximum for both
channels.
Screws
Maximum
(FWD, REV)
Deck
Deck
Fwo
Deck
REV Adj.
FwOo
3. Electrical adjustments location
e Main Amp. P.C. Board (parts assembly side view)
(Turning in the direction of the arrow increases the level.)
DECK A
OECK A
b,
FRONT
10 (No. 4292)
HIGH SPEED Adj
NORMAL SPEED Adj
Ene HIGH SPEED TP
When high speed adjustment
connect the bus wire to ground
DECK B
HIGH SPEED Adj
DECK B
NORMAL SPEED Adj
Leh
DECK B PB EQ Adj
Rech
BIAS. CURRENT Adj
cel
BIAS CUT
7] BIAS FREQUENCY Adj
Fig. 7-1
ot:
e) RIO? 1 ch
PB LEVEL Adj
DECK A
rs R
s ae 202 pop
, PB LEVEL Adj
VRIOI
ich
PB LEVEL Adj
DECK 8
a
; WF
ov
ich
~1d8
448
20!
Rech
PB LEVEL Adj
VRIO3
Lch
REC LEVEL Adj
DECK B
oe 03
Leh
REC LEVEL Adj

4. Electrical circuit adjustment procedure
TD-W77 7 A/B/C/E/G/J/U
Perform the tape transport checks and head azimuth adjustment before following checks and adjustments.
Adjustment should be performed in the order of alignment steps.
In the steps marked with an asterisk ( * ), adjustment should be performed after replacing the heads.
Perform this adjustment with the NR switch set to OFF.
Notice : OdBs=0.775V
Checking
DOLBY
circuit
(Rec mode)
(BIAS - CUT)
Output terminal: NR.
TP
ICAO1 27) & @2
Signal input: LINE IN
Cal. level: 400 Hz,
—8 dBs
DOLBY B
(Rec)
DOLBY C
(Rec)
Check and Adjustment
Input signal (Frequency, level) | Output raise value, deviation value
1 kHz, Cal, —40 dB +5.7 dB + 2 dB
5 kHz, Cal. —20 dB +3,5 dB + 1.5 dB
1 kHz, Cal. 0 dB +98 dB
1 kHz, Cal. —40 dB
5 kHz, Cal. —20 dB
+16.2 dB *3 dB
+2.9dB+2.5dB
1 kHz, Cal. O0dB+1dB
step Item Adjustment Adjust ing Standard Remarks
point value
*2 {Confirming |Play back VTT724, then confirm {Deck —8 dBs + 0.5dB | When the head is replaced, adjust
playback that the level at LINE OUT is L: VR102 playback gain level.
gain —8 dBs + 0.5 dB. R: VR202
Adjust VR102, VR202 and VR101, |Deck
VR201 so that LINE OUT level be- L:VR101
comes —8 dBm. R: VR201
* Playback Deck A : Play back VTT739, then Deck [A] : Deck
frequency confirm that the level of 1 kHz 0.5+1dB L: a cut by —1 dB (C102)
response and 10 kHz signals is 0 + 2 dB. b cut by —2 dB (C101)
(Check only) Deck [B] : R: c cut by —1 dB (C202)
Deck B : Before adjustment, discon- 0.5+1dB d cut by —2 dB (C201)
nect a, b (L-ch) and c, d (R-ch)
so that the outputs of 1 kHz and
10 kHz signals are flat.
Adjusting Connect the frequency counter to |L801 95kHz+ 3% METAL Position
bias the C821 lead through a 1.2 MQ
frequency resistor, then adjust L801 so that
the counter reads 95 kHz.
Recording 1) NR switch: OFF For Normal |With respectto |CrO,: 12.5kHz O+2dB
frequency 2) Record a1 kHz signal at an input tape 1 kHz reference:
response reference level of —20 dB, then L:VR104 |At 12.5 kHz, Metal: 12.5kHz O+2dB
record 50Hz and 12.5kHz sig- R : VR204 0.5+0.5 dB
nals and play them back. At this
time, adjust VR104 and VR204
so that the deviation of 12.5 kHz
outputs satisfy the standard
values with respect to 1 kHz
output.
Response (dB) Increase in high frequencies
> ieediodion
Decrease in high frequencies
O 50Hz 1 kHz
Low bias current
Appropriate bias current
High bias current
12.5 kHz Frequencies
(No. 4292) 11

TD-W777 sacecuu |
Adjustment
Apply a1 kHz signal to the LINE
IN terminals, record a 1 kHz sig-
nal at —20dBs input for both (L
and R) channels ona normal tape.
Play back the recorded part, and
adjust the recording level con-
trols so that LINE OUT terminal
level becomes —8 dBs.
Then adjust VR103 and 203 so
that LINE OUT terminal level
becomes —8 dBs.
Adjusting
point
For Normal
tape:
L : VR103
R : VR203
Standard
value
Normal:
—8+3dBs
CrO,:
—8+3dBs
Metal:
—8+3dBs
Remarks
Perform the adjustment using a
normal tape. Level difference be-
tween recording and playback for
SA/CrO, and metal tapes should
be less than 2 dB, and that be-
tween left and right channels
should also be less than 1 dB.
*6 | Recording | 1)
gain
2)
*7 | Checking 1)
record/
playback 2)
distortion
8 | Checking 1
signal to
noise ratio in
recording/
playback 2
~—
—
Record a 1kHz, —20dBs signal
to LINE IN terminals.
Play back the recorded part.
Check the output with a distor-
tion meter to see if the value con-
forms to the standard value.
Record a 1 kHz, -20dBs signal.
Stop the input by disconnecting
from the terminal to perform
non-signal recording.
Play back the recorded part. Mea-
sure the —8dBs recording output
and the non-signal recording out-
put for comparison using an elec-
tronic voltmeter. Check to see if
the value conforms to the stand-
ard value.
9 | Checking 1)
erasing
coefficient | 2)
3)
4)
Apply a 1 kHz, -20dBs signal to
the LINE IN terminals.
Perform recording with the signal
enhanced by 20 dB.
Erase a part of the recording.
Measure the output difference
between the erased part and non-
erased part to compare with an
electronic voltmeter.
Normal tape:
Less than 2%
CrO, tape:
Less than 3%
Metal tape:
Less than 2%
(THD)
Normal, CrO, &
Metal tapes:
More than 42 dB
Be sure to perform this checking
following bias current and record-
ing level checking.
Apply an input level to LINE IN
terminals with the recording level
controls set to maximum so that
the peak level indicator reads
O dB.
More than 65dB
For the measurement using a
metal tape, connect a band pass
filter between the deck and the
electronic voltmeter.
ie sing
(recording,
(1 kHz) erasing)
(4 kHz)
|
:
Electronic
Band pass filter
12 (No. 4292)

| TD-W777 wecercun
Wiring Connections
1 | 2 3 4 | 5 | 6 | 7 | 8 9 10
we PB HEAD
DECK
LEAF SWITCH PC.BOARD ASSY
MAIN BOARD
POWER SUPPLY BOARD
COUNTER SWITCH BOARD
‘DECK[A] LEAF SWITCH
PC.BOARD ASSY
(0)
| PASE KEY SWITCH BOARD
POWER
SWITCH
BOARD]
,#—>
HEADPHONE BOARD
DECK
CAM SWITCH
|
Color
codes
are
shown
below.
~]
Tit.
seatieasies
Brown
2.
taehors
Red
Bo
anes
aete
Orange
DECK
4
wu.
Yellow
CAM
SWITCH
:
Haweens
tee
cewenhed
ue
Do
ossleees
Violet
Be
ferent
Gray
eee,
White
DECK[A]
DECK
BO
seailt
Black
Di
ceil
Pink
Fig.
8-1
Crk
Light
Blue
(No. 4292) 13

[9] Standard Schematic Diagrams (1)
|
RIP & E HEADASS'Y N80!
VGHO425- 532
10} P
008 C103 4701
{A)PB HEAD ASS'Y
VGHO42¢ - 020
Gag 5802
R- CH
vMW175 1 D
QVZ5204-04 QVZ5503- VO3
uw 302 VR8CI
E —— ——_—
LINE tt
| EMNOGTV- 602A
PIN JACK ASS'f
LINE OUT
| 4801
QMS62062- 9G C99 0.01 Fw3
| HEAD PHONES
| 299 001
t 2802 VMW 1751 E
: a lit 2 sans
[BB EO AD
RIG3 100k
| R123
ne
Q101 , G80! , Q802, 0803
ON AT PB
Q102 ON AT REC
R8OS 2.2k
[8] RB HEAD AMP
IC 801 ANG6557
TD-W7 7 7 A/B/C/E/G/J/U
R872 220k
832 OFF AT
BMs
Q833 OFF AT
AMS
TD-W777 3 asrcvreci
0
é)
64)
ames
pat
RAIO3 6.8k
[tow LeveL stace_ }
6-5-5
CAIOS 2.2/50 CAI06 0.018
CAB02 470/10
PB EQ SELECT
Q105 oN AT{A} cron METAL
Q106 ON AT HIGH SPEED DUB
Q107 OFF AT HIGH SPEED
100k ous
[A] PB HEAD AMP | IC802 AN6557
0vZ3523-202A2|
(PB LEVEL AD)
C806 | ,0.01
R33) 22k
R829 6.8k
R893 22k
1C805
©@©r'« Bre
OQ a Wes
RI7G 7k
Cus RITE
C817 0.01
0829, an3
OY Q112_ ON
830,014
ON AT HIGH
SPEED DUB
-Q115 ON AT
METAL
€821,Q822 OSC AT REC
BIAS OSC CONTROL
C837 0.0!
1. VOLTAGES ARE UC-MEASURED WITH A DIGITAL VOLT METER WITHOUT INPUT SIGNAL.
CONDITION: [ MODE DUBBING
TAPE {A)BIME TAL
REVERSE MODE =~ ]
NR OFF
(4) Fowo (8) Fowo
2. UNLESS OTHERW:SE SPECIFIED.
ALL RESISTORS ARE '/6W #5% CARBON RESISTOR
‘ALL CAPACITORS ARE SOV CERAMIC CAPACITOR OR SOV MYLAR CAPACITOR.
ALL RESISTANCE VALUES ARE IN OHM (0).
ALL CAPACITANCE VALUES ARE IN yF (P= pF).
ALL
E.
CAPACITORS
ARE
SHOWN
IN
THE
FORM
OF
CAPACITANCE
(uF
RATED
VOLTAGE(
V).
ALL
DIODES
ARE
HSS104
OR
EQUIVALENT.
*
UNFLAMMABLE CARBON RESISTOR
METAL FILM RESISTOR
OXIED METAL FILM RESISTOR
220% LOW LEAK CURRENT ELECTROLYTIC CAPACITOR
NON-POLARISED ELECTROUTIC CAPACITOR
POLYPROPYLENE CAPACITOR
Q812,0121 ON AT
LINE
MUTE
Q826 Q827 ON AT REC
BIAS CUT
QVP4OB-104
Kt
AS FREQUENCY
RBE2 22k
O MUTI
R885 10k
FOE. 100 B31 47/16
6 BIAS
@ MUTE
LINE OUT Si
— = —
“WV
+1kV
SEMICONDUCTOR
2SK 301(Q..R)
Q103, 0105,0106,0113
Qn,
Gio 0801
102, 2SC 1685(R,S)
ane,
Q803 ,0821 ,Q822 0828,
0832 ,0833 .0841
Q811, 0812 ,Q827 254 564(R,S)
11,0121 2SC 2001 (L,K)
0626
Qii2 ans,
2SC 1845(E, U)
2SA 992 (E,U)
14 (No. 4292)
Playback signal
B Mecha
A Mecha
—¢—_ +7V line

| TD-W777 secre
Standard Schematic Diagrams (2)
canes ? I ae 4 [ 5 = ee:
eas
7 8 9 10
—— Pree | iii | Te a Sal
Pe
CAM
SW
ASSY
ic
709
~~
M7aLsoop
goa
a
g
££
vw.
ge
[A]
cap
moToR
[B]
cap
motor
a
e
fae
5
nt
s¥$
ok
5
SLIDE
SW
PWB
ee eee eee ee ee ee VCROO13-O01R sM4 sa af Pa i g¥ of oP ne LI
VKZ
3153-00
imim
&
5c
Boos
Fees
Frey
Bene
(aye?
TIMER
SW
= ai PLAY OFF REC
<j
<j
Fa
<j <j <j
qj
=
r
MMU-SB2LWA
X2
‘S74
: 7
sho
4
so
|
A 8 Fe 2 646464646444 =
&
ra
2
[2 z anne OP?
oR ao .
a ° 4 8
si
|
w
|
i
REV
MODE
SW
—
—
|
=
(33
c3)
a}
ais
oat!
FO
oe
an
|
eee
ee
—
—OQ000000
ss
2
zy
aa
—é
—
—
£46446655
83k
a
VR701,VR703
QVPE602-203
Gare?
ICDO!
LC7583A
VR702,
R704.
QVPE602-103
PAIS =| == [ule [ele [ofa -le [a
SECSEERORECR
CONFOROL MICON
IC701 MB88514B-556T
(1) a PLAYLED
t 1C 702 _M54641L
| l REVERSE <+—#—m FORWARD
conTINNOUS REC] a \
Co oo oo oo Goo oor
dB -20 14 10 8 6 3 1 [*) 0 3 5 8 +10
GRO 000 000 (O00 Oo. ooo ooo) Goo ooo oo or
VMW2698A i
OOO SS ee —— — —e 10
4 [ITAPE END DETECT] 1c mepaSsOn w —_
a4 \
aia le <f >
3: | -@ CLBASKEXNE)
o—)—O—~)-@-~@-O— OMAN TAT NTN
ee
hl
‘or
—
=
A TAPE END 6 2 ~sii6
pA
os
L
S7OS~S7I0
QSPIAII,
vol
vw
rrsic
|
R770
100k
730
sy
es
Sia
Se
en
é
ms
2
z
3
ees
(aa
ea
el
1~%6
RN702
QRBOGSJ-682
|
|
re
TLIN
R76! 390
‘*7~*%9
RN7O1
QRBO45J-152
VOLTAGE
SELECT
Pw.8l
.
[eee 2 2
30 87 3
eg .
=
———
>
——
371D-w7
Je
Pe
VOLTAGE
SELECT
Pw.8
V
A/6/
NR SW
OMS B
OMSA
[Al 70pH
E oy
7 nes
TH 70pH
BH meta
0 REC
MS SIG
O0uB
BNR REC
— 6 REC MUTE
HS 0U8
HS DUB
BAS
G MUTE
SINE OUT SIG
GNO
=v
+14Vv
R782 100%
TO1 POWER TRANS
‘ VOLTAGE SELECT SW
| Q852325-113 yMw2697 5
Se a : z eens
2903 1.20 F312
sana
R913 £70
@
R726 10K 743
—
-
|
?
2
oO
j
| Fw) TO1 POWER TRANS
1 COM
ab ae lx VMW1751 H
1C701 33 uewl 2 oR, 7784 Ee ge
g s —
701, 9702 =" nS | 3 3% asbt] x
Q731,Q732 ) & POWER sw
Q707~Q709 j 101- VO4
A/B/E/G/U
1
0716,Q717
|
2SC1685(R,S)
=
<a
R904 | RZ0052-4R7 QRD149N-4R7S _{: 0725, 0726 . 7 ON STAND BY
| (FUSIBLE RESISTOR) eensenee POWER SW PWB
R914 | RZ0052-4R7 | ORD 149J-4R7S ; al a —_— —
(FUSIBLE RESISTOR) |
R931 | ORHI44d-4R7 QRD149-4R7S
(FUSIBLE RESISTOR)
ee SIG DETECT] IC 807 BAIS2I6N
eens Recording signal
7 Playback signal
Fig.
9-2
—+—
+7Vline
(No. 4292) 15

| TD-W777 A/B/C/E/G/J/U TD-W777 A/B/C/E/G/J/U
Location of P.C. Board Parts
@ Main P.C. Board
1 | 2 | 3 | 4 5 6 | 7 _| 8 | 9 10
Leaf
Switch
Board
(DECK
B
)
Input
Volume
Board
Leaf
Switch
Board
(DECK
A
)
A
~ Power Supply Board
B
—
Cc
— : on ee
Z Evens im. Lee
Z 100000000, 10!
D
i
EN
a
1676
wet ¢atige dt &
‘S can ray IC
nigt
1QC0000000.
=
EAA
IA
NS,
t 4B 1 Zara
E
F
G
DOLBY
NR
Switch
Board
Power
Switch
Board
Operation Board
wee H. Phone Board
Bigs 10: 16 (No. 4292)

Hi Main P.C. Board Parts List
la] REF. NO PARTS NO. PARTS NAME
CF701 EFO-FC6004A5 CERA LOCK
CN31 E04365-0098 CONNECTOR
CN701 QMV5005-003 CONNECTOR
CN702 QMV5005-003 CONNECTOR
CN801 QMVS5010-008 CONNECTOR
CN802 QMV5010-004 CONNECTOR
c101 QCS31HJ-5612 C.CAPACITOR
C102 QCS31HJ-3312Z C.CAPACITOR
C103 ACS31HJ-4712 Cc. CAPACITOR
C104 QCS31HJ-1512 C.CAPACITOR
C106 QFV71HJ-1032M TF CAPACITOR
C107 QETCIAM-107ZN E.CAPACITOR
C108 QETCIHM-475ZN E.CAPACITOR
c111 Q@CS31HJ-2712 C.CAPACITOR
c114 QCS3Z1HJ-1512 C. CAPACITOR
C116 QFV71HJ-1032M TF CAPACITOR
C117 QETCLAM-107ZN E.CAPACITOR
€118 RQETCIHM-4752N E.CAPACITOR
c119 QCY31HK-2722 C.CAPACITOR
1 C141 QCS31HJ-3302Z ic .CAPACITOR
Ci4e QETCIHM-474ZN IE. CAPACITOR
C143 QCS3Z1HJ-4712Z C.CAPACITOR
C144 QACYZ1LHK-4722 Cc .CAPACITOR
C145 QFN3Z1HJ-8222 M. CAPACITOR
C148 QACSZIHJ-2212
C149 Q@ETCIHM-1052N
C152 Q@CC31EM-S63ZV
C146 QFV71HJ-1232M TF CAPACITOR
C147 ACS32HJ-1512ZV C CAPACITOR
C.CAPACITOR
E.CAPACITOR
C.CAPACITOR
C153 ACC3SIEM-2232V Cc CAPACITOR
C.CAPACITOR
E.CAPACITOR
C.CAPACITOR
C.CAPACITOR
C.CAPACITOR
C.CAPACITOR
TF CAPACITOR
E.CAPACITOR
—E.CAPACITOR
C.CAPACITOR
C.CAPACITOR
Cc. CAPACITOR
TF CAPACITOR
—E.CAPACITOR
E.CAPACITOR
QFN3S1THJ-8227
QFV71HJ-12372M
@CS32HJ-1512V
QCS31HJ-2212
QETCIHM-1052ZN
QCC31EM-5632ZV
QCC31EM-223ZV
QCC31EM-S63ZV
QETCIHM-475ZN
QCF11HP-103
QETCLHM-4752N
METCIHM-4752ZN
QETCIAM-4772ZN
QETCLAM-4772N
QCF3LHP-1032
QCF31HP~103Z
QCF31HP-103Z
QCF31HP-1032Z
QCF1I1HP-103
QCFiTHP-103
C154 QCCZ1EM-5632V
C161 QETCIHM-475ZN
C199 QCFI1IHP-103
C201 QCS31HJ-561Z
C202 ACS31HJ-3312
C203 QCS31HJ-4712
C204 QCS31HJ-1512
C206 QFV71HJ-103Z2M
C207 GQETCIAM-107ZN
C208 QETCIHM-475ZN
c21i @CS31HJ-2712
C214 QCS31HJ-1512Z
C216 QFV71HJ-1032M
C217 QETCLAM-107ZN
C218 QETCIHM-4752ZN
C219 QCY31HK-27272
C241 QCS31HJ-3302
C242 QETCIHM-4742N
C243 Q@CS31HJ-4712
C244 QCY31HK-472Z
C.CAPACITOR
C.CAPACITOR
E.CAPACITOR
C.CAPACITOR
C.CAPACITOR
M.CAPACITOR
TF CAPACITOR
© CAPACITOR
C. CAPACITOR
£.CAPACITOR
C.CAPACITOR
C CAPACITOR
C.CAPACITOR
E.CAPACITOR
Cc. CAPACITOR
E.CAPACITOR
E.CAPACITOR
E.CAPACITOR
E.CAPACITOR
C.CAPACITOR
C. CAPACITOR
C .CAPACITOR
C.CAPACITOR
C.CAPACITOR
C.CAPACITOR
C801
C802
C803
C817
C821
C822
C823
REF, NO PARTS NO. PARTS NAME
QETCIAM-4772N
QCF31HP-1032
QCF31HP-1032
QCF3Z1HP-1032
QCF3IHP-1032
ic. CAPACITOR
IC. CAPACITOR
QCFSTHP-1032Z
QCF31HP-1032
QFP82AS-153
QETCICM-476ZN
QFV71HJ-103ZM
C824
C825
C826
C827
C831
QFN31HJ-6822
QFN3S1HJ-332Z
QFN3Z1HJ-3322
QETCLTAM-1072ZN
QETCICM-4762N
C832
C836
C837
C841
C842
CF31HP-1032Z
QCF31HP-1032Z
Q@CY3Z1HK-1822Z
QETCLEM-3362ZN
C843
C844
C845
C906
C907
C908
C909
C911
c912
c913
"pried =392
QCS31HJ-3912
ACF31HP-1032Z
QCF31HP-1032Z
QETBIEM-228N
QETBIEM-228N
QFV71HI-3942M
RETCIHM-2242N
QETCLCM-1072ZN
QETCIAM-
QETCICM-
QETCIAM-
QETCICM-
QETCITAM-
QETCLAM-
107ZN
4761N
1072ZN
1072ZN
1072ZN
107ZN
C914 QETBIAM-109N
C921 =
QETCLTEM-2272N
C925 Q@ETC1EM-4762N
D101 HSS104TJ
D201 HSS104TJ
_|_ 0701 HSS104TJ
D702 HSS104TJ
D703 HSS104TJ
D704 HSS104TJ
D711 HSS104TJ
D712 HSS104TJ
D721 HSS104TJ
D722 HSS104TJ
D723 HSS104TJ
D724 HSS104TJ
D731 HSS104TJ
D741 HSS104TJ
D742 HSS104TJ
D743 HSS104TJ
D801 HSS104TJ
| | p80e HSS104TJ
D803 HSS104TJ
D804 HSS104TJ
D805 MA165
D813 HSS104TJ
D814
HSS104TJ
11E£1-TB2
11E1-TB2
11E£1-TB2
11E£1-TB2
MTZ5.6CT-77
MTZ1I1AT-77
RD11E¢(B3)
114E1-TB2
MS4641L
MB88514B-581T
REF. NO PARTS NO,
PARTS NAME
QRD161J-105Y
QRD1615-394Y
QRD161J5-512Y
QRD161J5-682Y
QRD161J-101Y
oe |
CARBON RESISTOR
CARBON RESISTOR!
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
Q@RD161J-222Y CARBON RESISTOR
| TD-W777 A/B/C/E/G/J/U
Z\ Parts are safety assurance parts
When replacing those parts, make sure to use the specified one.
REF. NO PARTS NO. PARTS NAME
R209 QRD161J-682Y CARBON RESISTOR
R211 QRD1I61J-101Y CARBON RESISTOR
R212 QRD1I61J-222Y CARBON RESISTOR
R213 QRD1I61J-222Y CARBON RESISTOR
R214 QRD1I61J-332Y CARBON RESISTOR
R223 QRD161J-104Y CARBON RESISTOR
R224 QRD161J-105Y CARBON RESISTOR
R225 QRD161J-105Y CARBON RESISTOR
R226 QRDI61J-394Y CARBON RESISTOR
R227 QRD1I61J-332Y CARBON RESISTOR
R228 QRD1615-222Y CARBON RESISTOR
R229 ARD1I61J-392Y CARBON RESISTOR
R230 QRD161J-332Y CARBON RESISTOR
R231 QRD1I61J-101Y CARBON RESISTOR
CARBON RESISTOR!
QRD1I61J-222Y CARBON RESISTOR 10806 LA2000os 1c
QRD161J-332Y CARBON RESISTOR 1C807 BA15218N Ic
QRD1i61J-104Y CARBON RESISTOR 1c901 AN78NO7 1.C
QRD161J~-105Y CARBON RESISTOR J701 QMS3533-001 JACK
QRD161J-105Y CARBON RESISTOR J801 EMNOOTV-402A PIN JACK
QRD161N-394Y CARBON RESISTOR J802 QMS6302-119G JACK
QRD1615-332Y CARBON RESISTOR L102 VQP0001-562S INDUCTOR
QRD1I61J-222Y CARBON RESISTOR L103 VQP0001-1835S INDUCTOR
QRD161J3-392Y CARBON RESISTOR _{| L202 V@QP0001-5625S INDUCTOR
QRD161J-332Y CARBON RESISTOR L203 VQP0001-1835S INDUCTOR
QRD161J-101Y CARBON RESISTOR L801 VQH1008-024 OSC COILCBIAS)
QRD161JN-472Y CARBON RESISTOR L802 V@P0001-102S INDUCTOR
QRD161J-222Y CARBON RESISTOR Q101 2SC1845¢E-U)-T |TRANSISTOR
QRD161J-332Y _|CARBON RESISTOR 102 25C1685(R,S)TA__|TRANSISTOR
QRD1I61J-223Y CARBON RESISTOR a103 2SK3010Q-R)ITA FET I.™
QRDI61J-222Y CARBON RESISTOR Q105 2SK301(Q@-/RITA FET I.M
Q@RD1i61J-222Y CARBON RESISTOR Q106 2SK301(Q,-RITA FET) TM
Q@RD161J-153Y CARBON RESISTOR Qi11 2$C2001¢(L-K)-T |TRANSISTOR
QRD1615-472Y CARBON RESISTOR Qite _|@SC1685¢(R/S)TA TRANSISTOR
J- BON RESI Q113 2SK301¢Q@-RITA FET I.M
QRD161d-472Y CARBON RESISTOR Q114 2SK301(Q,/RITA FET I.M
QRD1I61J-332Y CARBON RESISTOR Q115 285C1685¢(R-S)TA |TRANSISTOR
Q@RD161J-102Y CARBON RESISTOR Q116 2SC1685¢(R-SITA |TRANSISTOR
QRD1I61J-155Y CARBON RESISTOR Q121 28C2001(L-K)-T |TRANSISTOR
QRD161J-682Y CARBON RESISTOR Q201 25C1845(E-U)-T |TRANSISTOR
Q@RD161J-331Y CARBON RESISTOE @202 25C1685(R-S)TA |TRANSISTOR
QRDI615-331Y CARBON RESISTOE Q203 25K301¢6Q,-R)TA FET ILM
Q@RD161J-105Y CARBON RESISTOR Q205 25K301(Q-R)DTA FET 1.M
R173 Q@RD1I61J-123Y CARBON RESISTOR Q206 2S5K301(Q@-RITA FET 1.M
Ri74 QRD161J3N-472Y CARBON RESISTOR Q211 25C2001(L-K)-T TRANSISTOR
R176 Q@RD1I61J-223Y CARBON RESISTOR Q212 25C1685S(R-S)TA TRANSISTOR
R177 QRD1I61J-105Y CARBON RESISTOR Q213 25K301(Q-R)TA FET ILM
R178 QRD161J-105Y CARBON RESISTOR Q214 25K301(Q-R)TA FET I.M
R179 ARD1I61J-105Y CARBON RESISTOR Q215 2501685¢(R-S)TA |TRANSISTOR
R181 QRD161J-152Y CARBON RESISTOR Q216 125C1685(R-/S) TA ITRANSISTOR
R182 QRD161J-182Y CARBON RESISTOR Q221 28C2001(L-K)-T TRANSISTOR
R183 QRD1I615-472Y CARBON RESISTOR Q701 25C1685(R-S)TA ITRANSISTOR
R184 QRD161J3-182Y CARBON RESISTOR Q702 25C1685(R-S)TA |ITRANSISTOR
_| R186 QRD161J-122Y CARBON RESISTOR Q706 2SA564(R-S)TA _|TRANSISTOR
R188 Q@RD161J-222Y |CARBON RESISTOR Q707 25C1685(R-S) TA ITRANSISTOR
R191 QRDI61J-151Y CARBON RESISTOR a708 25C1685(R-S)TA ITRANSISTOR
R192 QRDI61J-184Y CARBON RESISTOR a709 25C1685(R-S)TA ITRANSISTOR
Q@RD161J-103Y CARBON RESISTOR Q716 25C1685(R-S)TA |TRANSISTOR
QRDL61J-103Y CARBON RESISTOR | 9717 25C1685(R-S)TA {TRANSISTOR
Q@RDI61I—-473Y CARBON RESISTOR Q721 25A564(R/S)TA {TRANSISTOR |
R196 QRD1I61J-473Y CARBON RESISTOR Q722 2S5A564(R,S)TA TRANSISTOR
R197 QRD161J-124Y CARBON RESISTOR Q723 2SAS64(R-S)TA TRANSISTOR
R198 QRD1I61J-221Y CARBON RESISTOR Q724 2SAS64C(R-S)TA TRANSISTOR
R199 @RDI61I—-124Y CARBON RESISTOR Q725 28C1685(R,S)TA_ |TRANSISTOR
R201 QRD161J-332Y CARBON RESISTOR Q726 PSCITE6B5S(R-SYTA ITRANSISTOR
R203 QRD161J-104Y CARBON RESISTOR Q731 25C1685(R-S)TA ITRANSISTOR
R204 QRD161J-105Y CARBON RESISTOR Q732 2S5C1685(R-S)TA ITRANSISTOR
QRDI61I-394Y CARBON RESISTOR 801 28C1845(E-U)-T |TRANSISTOR
QRD161J-5i2Y CARBON RESISTOR 25A992(E-U)-T TRANSISTOR
(No. 4292) 17

TD-W7 7 7 A/B/C/E/G/J/U
2SC1685¢(R-S)TA {TRANSISTOR R620 QRD161J-153Y CARBON RESISTOR
Q811 2SAS64CR-S)TA TRANSISTOR R621 QRD161J-273Y CARBON RESISTOR
Q812 2SA564CR,S)TA TRANSISTOR R622 QRDI61J-182Y CARBON RESISTOR
Q821 2S5C1685(R-S)TA |TRANSISTOR R623 QRD161J-273Y CARBON RESISTOR
Q822 28C1685(R-S)TA {TRANSISTOR R691 QRO0161J-102Y CARBON RESISTOR
~T Q@B26 25C2001¢L-K)-T |TRANSISTOR R692 Q@RD1615-272Y CARBON RESISTOR
Q827 2SA564¢(R-S)TA TRANSISTOR R693 QRD1I61J-102Y CARBON RESISTOR
Q828 2SC1685¢(R-S)TA |TRANSISTOR R694 QRD1615-272Y CARBON RESISTOR
Q832 2S5C1685¢(R-S)TA |TRANSISTOR R704 QRD161J-103Y CARBON RESISTOR
Q833 l@SC1685¢(R-S)TA_ [TRANSISTOR R705 QRO1I61J-103Y CARBON RESISTOR
Q841 2S5C1685¢(R-S)TA |TRANSISTOR R706 QRDI61I-103Y CARBON RESISTOR
Al Q901 2SB772(Q-P) TRANSISTOR R707 QRD161J-103Y CARBON RESISTOR
Al 902 2SA564(R-S)TA TRANSISTOR R710 QRD161J-103Y CARBON RESISTOR
Al @903 280882¢(Q-P) TRANSISTOR R711 QRD1613-471Y CARBON RESISTOR
Q904
28C2001¢(L-K)-T
|TRANSISTOR
|
R712
QRD1615-102Y
CARBON
RESISTOR
Q905
2SB605(LA-KA)
TRANSISTOR
R713
QRD1613-103Y
CARBON
RESISTOR
RN701
QRBO45J-152
R
NETWORK
R714
QRD161I-222Y
CARBON
RESISTOR
RN702
QARBO65J-682
R
NETWORK
R715
QRD161J-102Y
CARBON
RESISTOR
R101
ARD1I61I-332Y
CARBON
RESISTOR
R716
QRD161J-102Y
CARBON
RESISTOR
R103
QRD1I61J-104Y
CARBON
RESISTOR
R717
QRD161J-471Y
CARBON
RESISTOR
R233 TARD161J-222Y CARBON RESISTOR R718 “l@RD1613-223Y CARBON RESISTOR
R234 QRD161J-332Y CARBON RESISTOR R719 QRDI61J3-103Y CARBON RESISTOR
R251 ARD1615-223Y CARBON RESISTOR R720 QRD161J-223Y CARBON RESISTOR
R252 QRD161J-222Y CARBON RESISTOR R721 QRD161J5-473Y CARBON RESISTOR
R253 QRD161J-222Y CARBON RESISTOR R722 QRD161J5-223Y CARBON RESISTOR
R254 CARBON RESISTOR R7o3 QRD1615-221Y CARBON RESISTOR
R255 CARBON RESISTOR R724 QRD161J-223Y CARBON RESISTOR
R261 QRO161J-472Y CARBON RESISTOR R725 QRO16145-104Y CARBON RESISTOR
QRD161J-472Y CARBON RESISTOR R726 QRD161J3-103Y CARBON RESISTOR
QRD161J-332Y CARBON RESISTOR R727 QRD161J-103Y CARBON RESISTOR
R266 QRD161J-102Y CARBON RESISTOR R731 QRD161J-222Y CARBON RESISTOR
R267 QRDI61J-153Y CARBON RESISTOR R732 QRO161J-102Y CARBON RESISTOR
R268 Q@RD161J-682Y CARBON RESISTOR R733 QRD161J~-S561Y CARBON RESISTOR
QRD161J-331Y CARBON RESISTOE R734 QRD161J-103Y CARBON RESISTOR
Q@RD161J-331Y CARBON RESISTOE R735 QRD161J3-103Y CARBON RESISTOR
QARD1I61J-105Y CARBON RESISTOR R736 QRD1613-222Y CARBON RESISTOR
R273 QRO161J-123Y CARBON RESISTOR R737 QRD161J-102Y CARBON RESISTOR
R274 Q@RD1613-472Y CARBON RESISTOR R738 QRD161J-561Y CARBON RESISTOR
R276 QRD1615-223Y CARBON RESISTOR R739 QRD1614-103Y CARBON RESISTOR
| R277 Q@RD161J-105Y CARBON RESISTOR R740 QRD161J-103Y CARBON RESISTOR
R278 QRD161J-105Y CARBON RESISTOR R741 QRD161J-103Y CARBON RESISTOR
R279 QRD161J-105Y CARBON RESISTOR R742 QRD161J-823Y CARBON RESISTOR
R281 QRD1613-152Y CARBON RESISTOR R743 QRD161J-123Y CARBON RESISTOR
R282 QRD161J-182Y CARBON RESISTOR R746 QRD161J-103Y CARBON RESISTOR
| R283 ARDI61I-472Y¥ CARBON RESISTOR R747 QRD161J-823Y CARBON RESISTOR
R284 QRD161d-182Y CARBON RESISTOR R748 QRD161J-123Y CARBON RESISTOR
R286 QRD161J-122Y CARBON RESISTOR R751 QRD161J-224Y CARBON RESISTOR
R288 QRD1I61I-222Y CARBON RESISTOR R752 QRD161J-184Y CARBON RESISTOR
R291 QRD161J-151Y CARBON RESISTOR R753 QRD161I-224Y CARBON RESISTOR
R292 QRD161J-184Y CARBON RESISTOR R754 QRO161J-184Y CARBON RESISTOR
R293 QRD161J-103Y CARBON RESISTOR R755 JARD161J-2247 CARBON RESISTOR
R296 ARD161U-103Y CARBON RESISTOR R756 QRD1613-184Y CARBON RESISTOR
R295 QRD161U-473Y CARBON RESISTOR R757 QRD161J-224Y CARBON RESISTOR
R296 ARD1615I-473Y CARBON RESISTOR R758 QRD161J5-184Y CARBON RESISTOR
R297 QRD161J-124Y CARBON RESISTOR R761 QRDI61J-391Y CARBON RESISTOR
R298 @RO161J-221Y CARBON RESISTOR R762 QRD161J-104Y CARBON RESISTOR
R299 QRD161J-124Y CARBON RESISTOR R763 QRD161J-152Y CARBON RESISTOR
R601 QRD161J-392Y CARBON RESISTOR R764 QRD161J-151Y CARBON RESISTOR
R603 QRD161J-153Y CARBON RESISTOR R765 QRD161J-103Y CARBON RESISTOR
R606 QRD161J-222Y CARBON RESISTOR R766 QRD161J-155Y CARBON RESISTOR
R608 QARDI61J-222Y CARBON RESISTOR R767 QRD161J-103Y CARBON RESISTO
R609 QRD161J-182Y CARBON RESISTOR R768 QRD161J5-104Y CARBON RESISTOR
R612 QRD161J-153Y CARBON RESISTOR R769 QRD161J-102Y CARBON RESISTOR
R613 QRD161U-222Y CARBON RESISTOR R770 QRD161I-104Y CARBON RESISTOR
R614 QRO1615-182Y CARBON RESISTOR R771 QRD161J-104Y CARBON RESISTOR
R615 QRO1L613-272Y CARBON RESISTOR R772 QRD161J-103Y CARBON RESISTOR
R616 ARD161J-472Y CARBON RESISTOR R781 QRD161J-391Y CARBON RESISTOR
R617 ARD161J-822Y CARBON RESISTOR R782 QRD161J-104Y CARBON RESISTOR
R618 Q@RD161J-273Y CARBON RESISTOR R783 QRD161J-152Y CARBON RESISTOR
QRD161J-273Y CARBON RESISTOR R784 QRD1i6i1J3-151Y CARBON RESISTOR
TD-W777 A/B/C/E/G/J/U |
al REF. NO PARTS NO. PARTS NAME
QRD161J-103Y
QRDL61J-155Y
QRD161J-103Y
QRO161J-104Y
QRD1I61J-102Y
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
@RD161J-104Y
QRD161J-104Y
QRD161J-103Y
Q@RD161J-103
QRD161U-471Y
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
l@RD161J-471Y
QRD161u-332Y
QRD1613-472Y
QRD161J-222Y
QRD161J-332Y
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
QRD161J-222Y
QRD1615-103Y
QRD161J-103Y
QRD161J-102Y
QRD1613-223Y
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
QRD0161J-152Y
QRD161J-103Y
QRD161N-223Y
QRD161I-473Y
QRD161J-223Y
QARD161J-223Y
QRD161J-102Y
QRD161J-102Y
1615-103Y
QRD161J-223Y
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
18 (No. 4292)
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
| R866 QRD161J-223Y CARBON RESISTOR
R867 IQRD161J-10e2¥ CARBON RESISTOR
R870 QROD1L161J-683Y CARBON RESISTOR
R871 QRD161J~683Y CARBON RESISTOR
R872 QRD161J-224Y CARBON RESISTOR
R873 QRD161J-393Y CARBON RESISTOR
R874 QRD161J-393Y CARBON RESISTOR
R875 QRD1I4CJ-4R7SX C RESISTOR
R876 QRD161J-222Y CARBON RESISTOR
R877 QRO161I-223Y CARBON RESISTOR
R878 QRD161J-223Y CARBON RESISTOR
R879 QRD161J-473Y CARBON RESISTOR
R880 QRO1613-222Y CARBON RESISTOR
R881 QRD14CJ-100SX UNF.C.RES.I.M
R882 QRD161J3-152Y CARBON RESISTOR
R883 QRD161J-152Y _|CARBON RESISTOR
R884 |QRD161J-102Y CARBON RESISTOR
R885 QRD161J-103Y CARBON RESISTOR
R886 QRD161J-102Y CARBON RESISTOR
R887 QRD144J-5625 C RESISTOR
R888 JQ@ROI61J—-153Y CARBON RESISTOR
R891 QRD161J-223Y CARBON RESISTOR
RB92 QRD161J-103Y CARBON RESISTOR
R893 QRD161J-223Y CARBON RESISTOR
R894 QROL61I-223Y CARBON RESISTOR
R9O1 QRDA4CI-4R7SX C RESISTOR
R904 QRDI4C5-4R7SX C RESISTOR |
R905 QROL61I-471Y CARBON RESISTOR
R906 QRO161J-471Y CARBON RESISTOR
QRO161J-332Y
QRD161J-272Y
CARBON RESISTOR
CARBON RESISTOR
Z\ Parts are safety assurance parts
When replacing those parts, make sure to use the specified one.
A REF, NO
PARTS NO.
PARTS NAME
Al R912 QRD14CJ-1ROSX |UNF.C.RES.1-M
Al R913 @RD14CJ-471SX |C RESISTOR
Al R914 RDI4CJ-4R7SX |C RESISTOR
R915 @RD161J-471Y CARBON RESISTOR
AL R921 ARGO29J-330 OMF..RESISTOR
Al R923 Q@RD14CJ-331SX |C RESISTOR
R931 @RD14CJ-4R7SX |C RESISTOR
$701 Q@SP1A11-VO1 TACT SWITCH
$702 @SP1A11-VO1 TACT SWITCH
$705 @SP1A11-VO1 TACT SWITCH
$706 Q@SP1IA11-VO1 TACT SWITCH
$707 @SP1A11-VO1 TACT SWITCH
$708 Q@SP1A11-VO1 TACT SWITCH
$709 @SP1A11-VO1 TACT SWITCH
$710 @SP1A11-v01 TACT SWITCH
$713 QSP1A11-VOl TACT SWITCH
S714 @SP1A11-VoO1 TACT SWITCH
$715 @SP1A11-VO1 TACT SWITCH
$716 Q@SP1A11-VO1 TACT SWITCH
$717 Q@SP1A11-VOl TACT SWITCH
$718 Q@SP1A11-VOl TACT SWITCH
$719 @SP1A11-VO1 TACT SWITCH
$720 @SP1A11-VO1 TACT SWITCH
$721 @SS7A23-VOS SLIDE SWITCH
$722 Q@SS7A23-VO5 SLIDE SWITCH
S723 Q@SS7A23-V05 SLIDE SWITCH
S741 @SS7A23-VOS SLIDE SWITCH
$742 @SS7A23-VOS SLIDE SWITCH
$743 a@SS7A23~-VO5 SLIDE SWITCH
$901 QST8101-V04 PUSH SW
VR101 QVZ3523-202AZ Vo RESISTOR
VR102 QVZ3523-202AZ VV RESISTOR
VR103 QVZ3523-203AZ \V RESISTOR
: VR104 QVP4A0B-104 V.RESISTOR
VR201 QVZ3523-202AZ_ _|V_RESISTOR
VR202 @VZ3523-202AZ WV RESISTOR
VR203 Q@VZ3523-203AZ |v RESISTOR
VR204 QVP4A0B-104 V.RESISTOR
VR701 AVPE602-203 V.RESISTOR
i" VR702 QVPE602~-103 V.RESISTOR
VR703 QVPE602-203 V.RESISTOR
VR704 QVPE602-103 V.RESISTOR
VR801 QVZ5503-VO3 V.RESISTOR
VR802 QVZ5204-V04 V.RESISTOR
QEN6LTEM-4752Z
NP.E.CAPACITOR
CA102 @FV71HJ-103Z2M {TF CAPACITOR
CA103 Q@FV71HJ-183ZM |TF.CAPACITOR
CA104 @ETC1HM-684ZN |E.CAPACITOR
_|_ ca105 QETC1HM-225ZN _|E.CAPACITOR
CA106 QFV71HJ-183ZM |TF.CAPACITOR
CA107 QFV71HJ-103ZM |TF CAPACITOR
CA108 QFV71HJ-823ZM |TF.CAPACITOR
CA109 QETC1HM-684ZN |E.CAPACITOR
|| caiti10 QETC1HM-225ZN _|E.CAPACITOR
CA111 QEN6LEM-4752 NP.E.CAPACITOR
CA201 QEN61EM-4752 NP.E.CAPACITOR
CA202 @FV71HJ-103Z2M TF CAPACITOR
CA203 QFV71HJ-183ZM |TF.CAPACITOR
CA204 QETCIHM-6842N __|E. CAPACITOR
CA205 @ETCIHM-2252N |E.CAPACITOR
CA206 Q@FV71HJ-183ZM |TF.CAPACITOR
CA207 Q@FV71HJ-103Z2M |TF CAPACITOR
CA208 Q@FV71HJ-823Z2M |TF.CAPACITOR
CA209 @ETCIHM-684ZN _|E. CAPACITOR
CA211 QEN61EM-4752z NP.E.CAPACITOR
CA801 @ETC1AM-477ZN |E. CAPACITOR
CA802 QETCIAM-477ZN 1E.CAPACITOR
CNAO1 QMV5004-005 CONNECTOR
QMV5004-008
PLUG

TD-W777 weve
Z\ Parts are safety assurance parts
When replacing those parts, make sure to use the specified one.
PARTS NO.
HA12088ANT
VQZ20034-001
VQZ0013-001S
VQZ0034~-001
VQZ20013-0015S
PARTS NAME
DOLBY NR 1.C
FILTER
FILTER
FILTER
FILTER
QRD161J~222Y
QRD1I61I-472Y
QRD161J-682Y
QRD161J-332Y
QRD161J-332Y
CARBON
CARBON
CARBON
CARBON
CARBON
QRD161J-102Y
QRD161J-683Y
QRD161J-101Y
QRD161J-222Y
QRD161J-472Y
CARBON
CARBON
CARBON
CARBON
CARBON
QRD161J-682Y
QRD161J-332Y
Q@RD161J-332Y
Q@RD161J-102Y
QRD161J3-683Y
CARBON
CARBON
CARBON
CARBON
CARBON
@RO161J3-101Y
QRD161d-100Y
QRD161J-100Y
QRD161J-222Y
QRD161J-203Y
QRDL61J-103Y
QETB1AM-107N
QFN81HJ-102
VWS109-16B24K
VWS102-104K4K
LC7S583A
VGL1042-001
E45524-002
£45524-002
QRD1I44J-4735
QRD144J-1035
E04365-003S
CARBON
CARBON
CARBON
CARBON
CARBON
CARBON
E.CAPACITOR
IM CAPACITOR
UL CP JAMPER
CP JUNPER
Ic
LCD PANEL
FUSE CLIP
FUSE CLIP
CARBON RESISTOR
CARBON RESISTOR
CONNECTOR
{No. 4292) 19

TD-W7 7 7 A/B/C/E/G/J/U
M@ Dolby B-C NR P.C. Board
Fig. 10-2
@ Dolby B-C NR Board Parts List
ICAO1
CNAQ2
CNAO1
LA102-LA202
_JLA101,/LA201
RA801-RA802
RA108-RA208
RA106-RA206
RA80S
RA804
RA101,/RA201
RA803
RA104-RA105
RA204-RA205
RA102,RA202
RA103-RA203
RA107-RA207
CA101,/CA111
CA201-CA211
CA8BO2
CA8B01
CA105-CA110
CA205
CA104,-CA109
CA204,CA209
PARTS NO,
HA12088ANT
QMV5004-005
QMV5004-008
VQZ0013-0015S
VQZ0034-001
“@RD161J-100
QRD161J-101
QRD161J-102
QRD161J-103
QRD161J-203
QRD161J-222
QRD161J-332
QRD161J)-472
~QRD161J-682
QRD161J-683
QEN4LEM-475
QETCIAM-4772M
P QETCIAM-4772N
QETCIHM-2252ZN
QETCIHM-6842ZN
DOLBY NR I.C
CONNECTOR
CONNECTOR
FILTER
FILTER _
PARTS NAME
NP.E.CAPACITOR
E.-CAPACITOR
E.CAPACITOR
E.CAPACITOR
E.CAPACITOR
CA102-CA107
CA202,CA207
CA103,CA106
CA203-CA206
QFV41HJ-103
QFV41HJ-183
C€A108-CA208
20 (No. 4292)
QFV41HJ-823
TF.CAPACITOR
TF.CAPACITOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
CARBON RESISTOR
TF.CAPACITOR
Fig. 10-3
H@ LCD Board Parts List
LC7583A
VGL1042-001
QRD144J-473S
QRD144J-103S
QETB1AM-107N
QFN81HJ-102
£45524-002
VWS109-16B24K
VWS102-104K4K
PARTS NO
H@ LCD Board and Lamp Board
IC
LCD PANEL
C. RESISTOR
C. RESISTOR
E. CAPACITOR
PARTS NAME
IM. CAPACITOR
FUSE CLIP
UL CP JAMPER
UL CP JAMPER