Sony TC-KA6ES User manual

System
Recording system
4-track 2-channel stereo
Fast winding time (approx.)
90 sec. (with Sony C-60 cassette)
Bias
AC bias
Heads
Head (x1)
Erasing, S&F
Recording sD
Playing 5D
Motors
Capstan motor x 1 (direct drive linear torque BSL
motor)
Reel motor x 1 (DC motor)
Assist (mechanism drive) motor x 1 (DC motor)
Signal-to-noise ratio (at peak level, weighted, and with Dolby NR off)
Type I tape, Sony Type (NORMAL): 57 dB
Type II tape, Sony Type II (HIGH): 59 dB
Type IV tape, Sony Type IV (METAL): 61 dB
S/N ratio improvement
Dolby NR on Approximate values
B 5 dB at 1 kHz, 10 dB at 5 kHz
Cc 15 dB at 500 Hz, 20 dB at 1 kHz
S 10 dB at 100 Hz, 24 dB at 1 kHz
TC-KAGES
Photo : GOLD
Model Name Using Similar Mechanism | TC-K808ES
TCM-200D18
Tape Transport Mechanism Type
SPECIFICATIONS
Harmonic distortion
Tape type
Type I tape 0.4% (160 nWb/m 315 Hz, 3rd H.D.)
Sony Type I (NORMAL)
Type IV tape 1.5% (250 nWb/m 315 Hz, 3rd H.D.)
Sony Type IV (METAL)
Frequency response (Dolby NR off)
Tape type
20 - 17,000 Hz
(+3 dB, IEC)
Type | tape
Sony Type | (NORMAL)
Type Il tape
Sony Type II (HIGH)
20 - 19,000 Hz
(43 dB, IEC)
Type IV tape
Sony Type IV (METAL)
20 - 21,000 Hz
(43 dB, IEC)
20 - 16,000 Hz
(£3 dB, -4dB
recording)
Wow and flutter
+0.05 % W. Peak (IEC)
0.025 % W. RMS (NAB)
+0.07 % W. Peak (DIN)
Inputs
Line inputs (phono jacks)
Sensitivity: 0.16 V
Input impedance: 47 kilohms
Outputs
Line outputs (phono jacks)
Rated output level : 0.5 V at a load impedance of
47 kilohms
Load impedance: Over 10 kilohms
Headphones (stereo phone jack)
Output level ; 0 - 3 mW ata load impedance of
32 ohms
General
Power requirements
Power consumption
30 W
Dimensions (approx.) (w/h/d)
220 - 230 V AC, 50/60 Hz
430 x 135 x 360 mm (17 x 57/14 '/4 inches)
incl. projecting parts and controls
Mass (approx.)
7.6 kg (16 Ibs 13 02)
Supplied accessories
Audio connecting cords (2)
Design and specifications are subject to change without
notice.
Dolby noise reduction and HX
Pro headroom extension
manufactured under license from
Dolby Laboratories Licensing
Corporation. HX Pro originated
by Bang & Olutsen.
“DOLBY, “ the double-D symbol!
DO and “HX PRO” are
trademarks of Dolby Laboratories
Licensing Corporation.
STEREO CASSETTE DECK
SONY.

TABLE OF CONTENTS
Section Page
SECTION 1. GENERAL .......::cccssccscscssssesssssssersctsaeenecsenenee 3
SECTION 2. DISSEMBLY
2-1. Case and Front Panel ..........:ccccsscsceeseereoneseceeeeeneeseeeennes 4
2-2. KCASSOUE MOIGGN sa cecsisicpnesvacvatucsusnsraginad cera enairneatenneveant 4
2-3. “Ornamental. Plate ciscsccvsiiesasicnsiscennvart asap hecsededssracsudeavyaatans 5
2-4. Pinch Lever and Lever (FR) .........:eessssccessecercensereneneens 5
2-5. Comparator Board, Capstan Board and FG Board........ 6
2-6: UMD Boal iisoicitiiiaiaiitne ads ten nan iinet 6
2-7. Reel Motor Board ......... cc cecccccecesssseeessesenseesasenseeseessseneneens 7
SECTION 3. MECHANICAL ADJUSTMENTS................. 7
SECTION 4. ELECTRICAL ADJUSTMENTS ................. 10
SECTION 5. DIAGRAMS
5-1. Circuit Boards Location .........ceeeceessseeceeeresecenenesseensenees 14
5-2. Blok DiQGrain wisssssassssccsseccsecssvsssnenvssratonrosnsessaceasaessenceasntae 15
5-3. Schematic Diagram — Audio Section — ....... cece 19
5-4. Printed Wiring Board — Audio Section — ....... ccs 24
5-5. Printed Wiring Board — System Control Section — ........ 27
5-6. Schematic Diagram
— System Control (1/2) Section — ues seeereeseneeeeees 31
5-7. Schematic Diagram
— System Control (2/2) SECtion —.... ee eesseesseerenseeenes 34
5-8. IC Pin Functions
* 1IC801 M38172M4-133FP uu... csceseseeeeeeessecreterseresenens 37
© 1C851 M38122M2-069SP oo... cess eeteeeceeneneeeenenees 39
SECTION 6. EXPLODED VIEWS
6-1. Front Panel Section .......... ccc cesesssereeesssseetmaenessseeeenesaenes 40
B-2: ~ CHASSIS: SOCOM vais dcscseivcnacectvenvavasrvesstvsndiveceteaniatrereranores 41
6-3. Mechanism Section-1 (TCM-200D18) ..........cecesseeeseneeee 42
6-4. Mechanism Section-2 (TCM-200D18) .........cseseeeseeers 43
SECTION 7. ELECTRICAL PARTS LIST ............ceeeeeeenees 44
Notes on chip component replacement
¢ Never reuse a disconnected chip component.
¢ Notice that the minus side of a tantalum capacitor may be
damaged by heat.
SAFETY-RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY MARK A\ OR DOTTED
LINE WITH MARK A\ ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.

SECTION 1
GENERAL
Identifying the Parts
FRONT PANEL
| fel >) &] fe
| NI 1m =
[co] ool
—
oS
— _
112!
In
|
ww}
ES
@ |e
[SI |
ES
[25 [24] 23} (22) [21] (20) (19) [ig] 17
Level meter and Tape counter
kiK«1/>t1 (AMS)* buttons
RESET button
4 OPEN/CLOSE button
MEMORY button
Cassette holder
MPX (multiplex) FILTER button
CALIBRATION button
MONITOR button
REC (recording) LEVEL control
BIAS control
PHONES LEVEL control
PHONES jack
DOLBY NR (noise reduction) switch
REC (recording) EQ (equalizer) control
REC (recording) LEVEL (for calibration) control
@ REC (recording) button
pr (fast-forward) button
O REC MUTE (record muting) button
it PAUSE button
p> (play) button
m (stop) button
<4 (rewind) button
POWER switch
5| TIMER switch
x AMS is the abbreviation of Automatic Music Sensor.
—3-
fig] (15) (04) [13] (92) fi]

SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. CASE AND FRONT PANEL
@ Two screws © Case
(Case) \
‘
® Two screws : ,
@ Two screws (BVTT3x6) e
(BVTT3x6) ;
‘
®
Bracket
ZS
ra oo
© Two screws e
(BVTT3x6)
SS
SS
@ Two screws
(Case)
@ Five screws
(BVTT3x8)
2-2. CASSETTE HOLDER
@ Remove the cassette holder
@
Lever
(joint)
by
pushing
the
lift
lever
up
@ Tension spring
@ Cassette holder
© Shaft (left)
(Cassette holder
@ Stopper washer

2-3. ORNAMENTAL PLATE
@ Remove the ornamental
plate by pushing the
lift lever up
© Ornamental plate
@ Two screws
(BTP2.6x6)
2-4. PINCH LEVER AND LEVER (FR)
© Lever (FR2) ASSY
© Stopper washer (1.5)
. . q
a
@
Leafspring
=
(BVTT3x5)
P ~g@—— 8 Stopper washer (2.3)
™~
@ Spring compression a
© Lever (BT) ASSY @ Lever (pinch lever T) ASSY
© Lever (PS) ASSY
Lever
(pinch
lever
S)
ASSY
scree
O
Nut

2-5. COMPARATOR BOARD, CAPSTAN BOARD AND FG BOARD
(B Two screws (PS3x8)
© Washer Y
ZZ
Cr
: 0
(D Two screws i ‘Be
(PS3x8)
@® Deck ASSY
@ Flywheel (DS2.5)
@ Two screws
(BVTT3x5)
@ Capstan board
@ Bracket (thrust retainer)
®
FG
board
@
Two
screws
(PS3x8)
\
® Three screws
(PS2.6x6)
@
Comparator
board
®
Flywheel
(DT2.8)
Cs
©
Two
screws
@
Two
screws
(PS3x8)
(BVTT3x5)
2-6.
MD
BOARD
@
Screw
(PTP2x25)
7]
@
Four
screws
(BTP2x18)
| Rotary encoder (S1001)
~~ Adjust A-mark to the line
| when reassemblies.
Adjust the boss of the mode cam
to the point when reassembling.
:
Ss
Selection
lever
\
oes
Mode
cam
. “+ Adjust the line on the mode cam
Hook the belt here temporarily to the tip of the selection lever.
when reassembling
— §—

2-7. REEL MOTOR BOARD
@ Four screws
(P2.6x6)
2) Reel motor board
SECTION 3
MECHANICAL ADJUSTMENTS
* Refer to page 9 for Adjustment Location.
PRECAUTIONS.
1. Clean the following parts with an alcohol-moistened swab. 2. Demagnetize the record/playback heads, erase heads and
(tape sliding surface) the capstan using the head demagnetizer.
. Do not use a magnetized screw driver for the adjustments.
. After the adjustments, apply suitable locking compound to
Capstan the parts adjusted.
Tape guide (S) . The adjustment should be performed with the rated power
supply voltage unless otherwise noted.
Pinch roller (T) ies :
Pinch roller (S)
Erase heads Record/playback heads

Tape Passing Adjustment
Note: For the following adjustments, use the jig as far as
possible. Although the following methods are operable
without using the jig, precise adjustment may not be
completed, for example no compatibility to other decks
is available even if self recording and playback is OK.
In these adjustments, either the pinch roller guide in
the S side or the record/playback head guide is referred
to for tape pass. Therefore, do not unnecessarily rotate
the adjustment screws including those of the erase
heads unless any one is replaced. When 2 or more
heads or pinch rollers out of these 2 heads and pinch
rollers are to be adjusted or replaced, use the jig for the
adjustments or replace one at first and then take
complete tape pass and then replace the second one.
Head height adjusting jig: apex
Preparation:
¢ Mirror cassette CQ009C 8-909-708-01
(Or CQ012C 8-909-708-02)
If it is not available, cut a part of the half of a 120 minute
cassette tape and use.
Cut and use.
¢ Plus screw driver
Medium size ...... Apply to the head adjusting screw.
Minus screw driver
Large size.......... Apply to the pinch roller adjusting
screw in the S side.
* Pen light
¢ WS-48B (3kHz, 0dB)
¢ P-4-A100 (l0kHz, —10dB)
Definition:
The following view relates to record/playback heads.
Height Thrust Azimuth
Tilting
For the locations of the adjusting screws, see the view
“adjustment location” in the lower right corner of Page 9.
Procedure:
Pinch roller in the S side
Note: It should be adjusted only when the pinch roller in the S
side is replaced.
1. Mount the mirror cassette and set the equipment to playback
state.
2. Check that the tape is curled in the pinch roller guide or the
guide of the record/playback heads.
If curled, remedy it by rotating the tape curl adjusting screw
@. At that time, check that the tape runs near the center
part of the erase heads.
Record/playback heads
Note: The heads should be adjusted only when the record/
playback head is replaced.
1. Mount the mirror cassette and set the equipment to playback
state.
2. (Height adjustment) Check that the tape is curled in the tape
guide of the heads. If curled, rotate screws ©, and@ in
the same angle and move the entire heads parallel. Check
the mirror cassette where there is curling and, when curling
exists in the lower side (actually in the deep side), tighten
all screws slightly. If curled in the upper (your) side, loosen
them.
| ' ' ‘ ,
Far side — ae —- Your side & F : os
Normal Curled in the Curled in
(record/playback far side. your side.
head viewed from
: Loosen screws
the erase head side)
Q,O and@.
Tighten screws
@, © and@.
3. (Adjustment of tilting) Adjust back tension to 0 still in
playback state (loosen the tape by rotating the reel in the S
side using a small tip such as a pencil), and check that there
is no curling or snaking (up or down) in the guide of the
record/playback heads. Snaking of the tape may occur only
within the range of a difference in the widths of the tape and
the tape guide (it curls when rate slacks more than the
range). Therefore, carefully check it because it may often be
overlooked.
If the tape is snaking, rotate screws @ and @ in the same
angle and change the tilting of the heads. Tighten or loosen
the screws to remedy up or down snaking, respectively.
4. Repeat the adjustment 2 and 3 again and converge the height
and tilting to suitable positions.
5. (Tentative adjustments of azimuth) Demagnetize and clean
the heads and playback WS-48B (3kHz, OdB).
Rotate the screw @ so that the pointer or the level meter of
the set or connected to LINE OUT becomes maximum. If
the screw is rotated more than 1/2 turn, repeat the
adjustments again from 1.
6. (Checking of tape pass) Connect an oscilloscope to LINE
OUT, replay P-4-A100 (l0kHz, —-10dB) to describe
Lissajous’ figures.
At about 20 seconds after beginning playback (the tension in
the loop becomes stable), check that the variation of the
Lissajous’ figures occur within £90° (more preferably within
+45°). If beyond +90°, adjustments of tilting or height will
not be complete, so finely adjust the equipment again from
1.
— g8—

Standerd adjustment tape
P-4-A100
(10kHz, —10dB)
L-CH 47kQ Oscilloscope
R-CH
LINE OUT
Oscilloscope Lissajous’ Figures
QODO@OO
in-phase 45° 99° 135° 180°
a
good No good
Note: The heads should be adjusted only when the erase head
is replaced.
1. Mount the mirror cassette and set the equipment to playback
State.
2. (Azimuth adjustments) Adjust screws @ or @ so that the
tape runs as parallel to the erase heads as possible.
Loi A)
ay
Normal
Tighten @
and loosen @.
Tighten @
and loosen @.
(Erase head
viewed in the
mirror cassette)
3. (Height adjustment) Rotate screws ©, @ and @ in the
same angle so that the widths of erase heads seen in the
upper and lower sides of the tape become essentially the
same. If the width in the upper or lower side is larger,
tighten or loosen the screws, respectively.
Erase head (viewed in the mirror cassette)
oo
Tape —»
eS
Adjust to the same widths.
4. (Adjustments of tilting) Adjust back tension to 0 still in
playback state and check that there is no snaking in the
erase heads and pinch roller guide in the S side. If there is,
change tilting by rotating the screw ©. When the tape
moves up or down in the mirror tape, tighten or loosen the
screw, respectively.
5. Repeat the adjustments again from 2. and converge the
height and tilting to more suitable values. And, check that
there are no tape curls in the pinch roller guide and the
guide of the record/playback heads.
6. (Adjustments of thrust) Slightly loosen the screw © and
finely adjust it so that the tape smoothly runs over the entire
surfaces of the heads by adjusting the thrust of the erase
heads to an optimum value relalive to the tape.
About 0.5mm
——a phil Sans
N | as
one heads |
Record/playback
heads
Too shallow Too deep
1. Check that the tape smoothly runs over the entire tape pass
without curling or snaking.
2. After the adjustments, apply the locking compound to the
screws adjusted (apply the compound to the screw © only
after the final azimuth adjustments are completed).
Adjustment Location:
The following views relate to those in the mirror cassette
(upper) and MD viewed from your side (lower).
Pinch roller in
the S side Erase Record/playback
heads heads
Pinch roller in
the T side
Torque Adjustment
1. Load the torque measuring tape CQ-102C, and play back.
Adjust RV801 so that the torque meter reading is 40 + 5g
cm. (0.556 + 0.069 oz « inch)
2. After adjustment, measure back tension and FF/REW torque,
and make sure that measured data satisfies the specification.
35 — 45gecm (0.49 — 0.62 oz * inch)
FWD back
CQ-102C
|
7
—
11gecm
(0.10
—
0.15
oz
¢
inch)
FF/REW CQ-201B 65 — 90gecm (0.91 — 1.25 oz » inch)

SECTION 4
ELECTRICAL ADJUSTMENTS
* Note
1. Perform adjustment in the order listed below. (As a rule,
adjust the record system after adjustment of playback system
has been completed.)
Adjust and measure both channels otherwise specified.
To perform simultaneous record and playback, select
recording mode, and set MONITOR switch to TAPE, then
play back immediately the recorded signal to take out from
LINE OUT.
ee as
* Switch position
DOLBY NE ii sicissassutscapresecetoadianeee tes tetes OFF
MPX FILTER ssvstpcssssnivesceactaceucsvascdesatalyesoeet’s OFF
TVET, sedis ttiensiessdien enemies OFF
MONTTOR ssiccstsdiste carstaanetaiicanaedevannaoveevtents TAPE
CALIBRATION ‘aicsptesivenscitirecumacans OFF
BISS. coeur ataeavedan CENTER CLICK
REC LEVEL «.:iscivstecegarchesnvenss CENTER CLICK
REC EO ©. cocnsvs cotacaeresectiusease CENTER CLICK
* Standard Record
Adjust the REC LEVEL (RV501) controls so that the I/O
signal levels specified below can be attained.
Record Mode
AF OSC
e VTVM
Attenuator 10kQ 47ka. |Z]
od Tremere
"T1000
Tie
KEE:
6002 VINE IN LINE OUT
OdB=0.775V
Standard Input Level
Signal source impedance 10kQ
Input signal level 0.5V (-3.8dB)
Standard Output Level
Load impedance 47kQ
output signal level 0.5V (-3.8dB)
Test Tape
3kHz, 0dB Tape speed/WOW check
10kHz, —10dB Azimuth adjustment
P-4-L300 315Hz, 0dB PB level adjustment
Tape Speed/WOW check
Procedure:
Test
tape
Frequency
counter
WS-48B (3kHz, 0dB) & WOW meter
47kQ.
Se
nh
LINE OUT
L-CH or R-CH
1. Play back the top of test tape to measure its output
frequency and WOW value.
2. Invert test tape and perform same measurement, then check
for difference between top and end of tape.
Specification :
Tape speed deviation : within 2,990 to 3,010Hz
Tape speed fluctuation : within 2,990 to 3,010Hz
WOW (WRMS) : 0.047% less
MPX Filter Check
Condition :
DOLBY NR switch : OFF
MPX FILTER switch : OFF
REC LEVEL control : Standard record
MONITOR switch : SOURCE
Procedure :
1. Mode : stop
AF OSC
VTVM
) Attenuator 10kQ 47ka |LL]J
)
‘e)
LINE OUT
LINE IN
315Hz, 0.5V (-3.8dB)
2. Applying 19kHz, 0.5V (—3.8dB) signal, measure the LINE
OUT level.
Specification :
DOLBY NR switch : Either B, C or S
MPX FILTER switch : ON, LINE OUT level must be,
315Hz : within 0.44 to 0.56V (within —4.8 to —2.8dB)
19kHz : 15.8mV (—33.8dB) or less

Record/Playback Head Azimuth Adjustment
Procedure :
1. Mode : FWD playback
Test tape
P-4-A100
(10kHz, —10dB)
LINE OUT
2. Turn the adjustment screw for the maximum output levels.
If these levels do not match, turn the adjustment screw unitil
1dB within idB
R-CH
Screw Peak
position
3. Phase Check
Mode : playback
—- angle
L-CH peak R-CH peak
Test tape
P-4-A100
(10kHz,
—10dB)
nee
47kO
Oscilloscope
R-CH
LINE OUT
4. Confirm that the phase difference between L-CH and R-CH
is in-phase to 90°.
Oscilloscope Lissajous’ Figures
QOAO@O
in-phase 45° gd° 135° 180°
orn Wy
good No good
Adjustment Location :
Adjusting screw
Playback Level Adjustment
Procedure :
1. Mode : Playback
Test tape
P-4-L300
(315Hz, 0dB)
LINE OUT
2. Adjust the RV101 (L-CH) and RV201 (R-CH) to satisfy the
following specification.
Adjustment Value :
LINE OUT level : 0.3 to 0.34V (8.2 to —7.2dB)
Level difference between channels : within 0.5dB
Confirm that the LINE OUT level does not change when
playback and stop are repeated.
Erase Current Adjustment
Procedure :
1. Mode : record
Blank tape
CS-413
VTVM
TP502
Frequency counter
2. Adjust RV506 so that VTVM reading is 110mV (erase
current 110mA).
3. At this time, confirm oscillation frequency.
Adjustment Value :
Erase current : 110+2 mA
Oscillation frequency : 160 + 6kHz

Bias Consumption Current Adjustment
Note : The bias consumption current must be adjusted before
adjusting the record bias. Retry record bias adjustment
after the bias consumption current is adjusted.
Procedure :
1. Set semi-fixed resistors RV104 (L-CH), RV204 (R-CH) and
RV505 for record bias adjustment to mechanical center, and
select the recording mode without applying a signal.
2. Adjust T101 (L-CH) and T201 (R-CH) so that the digital
voltmeter reading becomes minimum.
Digital
voltmeter
B+ (+8.5V)
Adjustment Value : 120mV or less
(This Value is measured using CS-413 after bias adjustment.)
Bias and Recording level adjustment
Condition :
REC LEVEL control : Specified recording position (page 10)
Procedure :
1. Mode : simultaneous record and playback
LINE IN
AF OSC 315Hz, 50mV (—23.8dB)
10kHz, 50mV (-23.8dB) oo
"3 10kQ
O| Attenuator
o-oo
11
OOO
_
Crete
Oscilloscope VTVM J
ed) ee
oO
| |
LINE OUT
2. Adjust the following controls so that the minimum output
becomes the specified output level.
(1) RV104 (L-CH) and RV204 (R-CH) ...... Bias adjustment
(2) RV103 (L-CH) and RV203 (R-CH) ...... Recording level
adjustment
Adjustment Value :
(1) Level of 10kHz against 315Hz : 0 + 0.3dB
(2) 315Hz level : 48.3 to 51mV (—24.1 to —23.5dB)
Metal Bias Adjustment
Condition :
REC LEVEL control : Specified recording position (page 10)
Procedure :
1. Mode : simultaneous record and playback
315Hz, 50mV (—23.8dB)
AF
OSC
10kHz,
50mV
(-23.8dB)
Blank
tape
*
10kQ
LINE
IN
CS-413
O
Attenuator
|
Ree
|
't
OOO”
6
Gy
OM
LINE OUT
2. Adjust RV505 so that 10kHz R-CH output is + 0.3dB
relative to the 315Hz output.
Calibration Adjustment
Condition :
CALIBRATION switch : ON
TP801 : The state of short-circuit
Adjustment method (Oscillation input level) :
1. Short-circuit the test point TP801 of system control (A)
board.
2. Adjust RV904 (HIGH), RV905 (MID) and RV906 (LEVEL)
to become the level meter as the following display.
a HIGH
Vv
SRS MID
LEVEL >ma<
3. As for HIGH and MID, the segment with AV mark in the
left side should be lit. (approve of flashing)
And when the left segment is flashing, the right segment is
approved of flashing.
4. As for LEVEL, @ mark should be lit. (Both ends are
approved of flashing.)
5. Release the short-circuit of TP801.

Adjustment Location :
AUDIO (A) BOARD — Component side —
Playback Level Adjustment
RV101 (L-ch), RV201 (R-ch)
Metal Bias Adjustment
RV505
Bias Consumption Current Adjustment
RV104 (L-ch), RV204 (R-ch), RV505
T101 (L-ch), T201 (R-ch)
TP501
Erase Current Adjustment
RV506
TP502
Bias and Recording Level Adjustment
RV104 (L-ch), RV204 (R-ch)
RV103 (L-ch), RV203 (R-ch)
SYSTEM CONTROL (A) BOARD — Component side —
Torque Adjustment
RV801
Calibration Adjustment
RV904 (HIGH), RV905 (MID), RV906 (LEVEL)
TP801
SYSTEM CONTROL (F) BOARD — Component side —
IC901 ic902

SECTION 5
DIAGRAMS
5-1. CIRCUIT BOARDS LOCATION
REEL MOTOR board
SYSTEM CONTROL (D) board
SYSTEM
CONTROL
(A)
board
COMPARATOR
board
{= DOLBY-S board
7 AUDIO (B) board
SYSTEM CONTROL \\
(C) board
SYSTEM CONTROL \\ SF
(E) board
SYSTEM CONTROL
(F) board
AUDIO (A) board
rs ——a
i AL,
MD
board
IN
“abs|
WR
DOLBY-S
board
CAPSTAN board
SYSTEM CONTROL (B) board
AUDIO (D) board
AUDIO (C) board

5-2. BLOCK DIAGRAM
HR
(2
L
P5OI
/2)
— A,
G
(PB HEAD)
[NEN] C
{J
(
09
J502
HRP50 |
(1/2)
oS
L+ 4
(REC HEAD)
TPSO}
O
O 8V
O-T-— R-CH
BIAS CURRET
HES!
X &
ERASE HEAD)
TPS02
O
©
ERASE CURRENT
(5) PB EQ
AMP
ICSOt
R-CH
R-CH
RIPPLE
FILTER
Q526
BIAS
ose
0527,528
as |
RV505
METAL BIAS
BIAS CURRENT
TYPE V
Q525
DOLBY AMP
(2)) REC iN IC502 ae
CAL/
J502
| Rey
(5) Ope) [ENE Om
I Scag
RVIOI
PB LEVEL
DOLBY-S
SWITCH
Q102
120/70
SWITC
Q101
LINE MUTE
Q134
LINE MUTE
SWITCH
Q802
fe)
DOLBY S
D108 SWITCH
Qt09
SWITCH
Q516
BUFFER
1C525
(1/2)
REC MUTE
Qli2,80l
DOLBY-$ NR
SCINH REC@3)
out
LINE OUT
OFF/B/C
DOLBY
AMP
4!) REC REC
IN OUT
REC AMP
IC513
(1/2)
IcStl
REC EQ UP
0301353
REC LEVEL
Q307 3 |
Q530, 53)
BIAS
SWITCH
521 SWITCH
Q9g0l
SWITCH
ERASE CURRENT 0902
SWITCH
Q903
RVI04
RECO
BIAS
BIAS
CURRENT
REC EQ SELECT SWITCH
BIAS SELECT SWITCH
ae
|
ae
==
16:—
~26V REG
ae
a
ee
ee
SOURCE
D709
iat et
ep
at
Bs
nT
El ease oy eS
ac
ee
en
SNES
NR
ASSIST
E20
eevee
eee
ed
a
ee
a
wr
cay
ne
62) DoLBY- p ASSIST
2
ae
ee
See.
:
Ic602
MOTOR
DOLBY ON/OFF ASSIST
0518
Paihia
-
cee
eee
)
Gi)
DOLBY-C
system,
ey
69)
aide
MECHANISM
TOO!
POWER
TRANSFORMER
J501
:
EEP
ROM
+8V
O
1C802
O
SDL
SCL
+8V REG
Q501 ,505
4
CONTROL
503,507
D70!-704
M-CLK
B—w}
POWER
DET
@6)PWR
DET
PLAY
TRO
BV
REG
a
Be
0502,506
RESET
i
$1001
37}
P
ROTARY
nee
CONTROL
ENCODER
40]
PT3
pre
504,508
+12V
+12V REG
751,756
$1004 {0PEN)
SI003 (CLOSE)
$1002(DOOR)
$1005 (FWD TAB)
CONTROL —- CLSWG@5)
LYS DRSWG4)
REC MUTE 1¢B01 REC TABS
$1007
METAL 0) eS) METAL)
0705-708
+9.2V
CAPSTAN FG
CONTROL
Q758
D753 HEATER |
$1008
(70p)
$1006
CAPSTAN
O MOTOR
Bs
(HALF)
COL
$89l
@i)
TYPE
IV
o
MONITOR
RESET $892
O
REMOTE CONTROL RECEIVER 65) MPX FILTER
-_ 5 $894 H901—903
ae X80! CALIBRATION HALL ELEMENT
TP80| 6MHz
a CALIBRATION ee
RV892
T REEL DET REC FO
1C1002 db ae
LEVEL VOL
S REEL DET
(i6-18, 26 ) 26
FLUORESCENT
LIGHT
RESET
INDICATOR
TUBE
[>] 0851
>)
=
pes
KEY
CONTROL
GRD
|
i~
FLT
DRIVE
GRD
2
ATES}
+5V
Ney,
1C
851
REC] 0853 AN 6 $853 - 857
SIGN
Ne J, O $858 - 862
‘S
3 $851- 852
=m
10522 (2/2) 1€521 (2/2) 1€520 (2/2)
oP¢
pl
*Rch
is
omitted
‘
Q904
e
Signa!
path
>» : PLAY
R-CH
ga
le
>>>
:
REC
$70t
sp —o-«
TC-KA6ES

TC-KAGES
5-3. SCHEMATIC DIAGRAM — AUDIO SECTION —
1
2 3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
TO SYSTEM CONTROLIF)
©
BOARD
—s ——— cnpso1
a
° © (See Page 36) TO SYSTEM CONTROL (F }
- 1 a a a a a a oG 5@ BOARD
TO
DOLBY-$
BOARO
a
a
ce
in
Te
DASI3
{AUDIO(A) BOARD] a : ~ 2 i es . Ee 3 2 S (See Page 36)
ae CN5O! rae CNSI34 =
BP
3P
TO SYSTEM
CONTROLIA)
© BOARD
SCN705
oar
20
(See Page 32)
=
a
<
z
—
<
GNS
I |
4P EH WHT
34
£225 £226
22 Sov 22 Sov i 5
0107, 207
0103,203 Q104,204 Q106,206 LINE MUTE
TAPE MONITOR DOLBY-S MONITOR SOURCE MONITOR
iC501 i _
PB EO AMP oleae! @501,503, 505,507
SWITCHING
+8V
REG
512 Q501
Cc +H REG . 2SD1585
eps ae gi = as ae yt
° BB 1201 a i Goa BUFFER ar BUFFER
: J Ka = & ie moe ee asesoa | g ane o RaNa5800 B]_
m 2 Q— 778.1 s 1.8k 3 0 =
che 7 = ee =| 2) sh.8] S[sle" [8 {es sczbos 9b 2.2e PZ - 2p je em ae oa ae Bint a 3\5 10.3
s 3S B| 39 She > oo a To Fo 0 06 41/2) ¥ =|8
3 gst 3 at Sl 5] Seal 2] Slooee le IS 7 =& Bisco: 2SKS0A nose ‘nanesses «wo | “care i 3}
=
a=
~8.4
2
&
S|
8]
Sh
a|
S/S8e8
|S
18
Paes
104Be
8
>
Sfy
s:0.1
ty)
g
10k
Rx
2.2
8.4
mB
= ae ey fi sé 3S : S} olasye 18 w 3 ses s 3 = “ ok +
Saslo (201 = 3 ie Sf 3 - Zo Icso2 6.7 B Sy v 1 = Sov , 0 oa az
RpSbi I g)S]8 R203 0,02 s¢ gi ely 2}-7.9}-8| o|-sl-s| of of 01 o CX20188 de ., 3 = o Re MUTE 33
HRP
501(2/2)
“s
.
2
ST
aFg
al
;
Rees
=
2
g
is
z
10k
R238
4.7K
49
131,23
|
8
REC/PB
HEAD
8
g
S|
Bs
MOOE
235
wei
To
ee
rw
<8.4
0
!
S|
=
R256
bi
INE
MUTE
“S
2 ae a ae ©, CAA a 8 Bk Bo in SS SOURCE:0,1 3 7 47% Darts u $
SWITCHING 1 PB:NOT USE ad a © 8.4 Nn
D “s 120770 . % 7 B+ fies 25821448
ia ee S z a & z ale a 5 uw
fn
:
Ls
és
7782
5
€
BBY
6.
Bug
2g
ge
'
6__4_4
6
.
* 28a 7 , 4
orn
3 ; Qt07
3 8 sl. S 8B aye =Bth 8 BOR eek 29821448 a - |
7 5 dé al 2,2 84 2 te Bo7 ae ay "ggf830 , () €
~
fel
|S
ay
Pe
ee
Tg
s7T
Ss
3
5
8]
Ee
8
ee
a
o—4
7
SF
Rigo
aN
2
|
+
|
S28
|*
4
3
[ge
S5
#}
|
lel.
gs
27°
|=
[5
|e
B
were
|
B
3
\;
vw
mure
ae
z
ale
ie
es
*
2835
2
C106
=e
x
oF
=
Sa
=
ee
DOLBY
Q106
od
ed
S(ot B) See 399 oes 8 =| = = =|38 D 4 2SKS0A 3
=IeT
R104
130k
|
&
5
Ser"
=>
hs
2
x|°S
l/s
az
AMP
y
o-—
R129
|
es
IS = & w Xe 7 ce 6" 9513 R526 4 a > | sis
i 5 . f Ee PB LEVEL L re als Pe 2sAitis | 2.2k 3 Te R137 100 =|8
E
5
4
4-447
&
=
7
-8.4
HP.OUT
(R)
7
ch 3 C01 = = 8.4 R
Rigg
Tech
oo
¢
—¢
0
HP.OUT
(L)
:
=
ea ~ SS P L. MUTE + :
B+ R308 47k
1501. 0/2 8-4 + 9 L.ouT ®
¥5220P Q509 AMS BUFFER 517.1004 | EE It l Q513 eG
AMS MUTE Jo ete sev -6V REG
Lb ci22 L.ouT U Q502,504,506,508
Te 22 SOV -8V REG
y : J es CAL. CONT
8.4,
0507
if
$2
OSC.SI6
ES
N41
48M
~ ®
@
;
10513
0/2)
° "Ranessee om A Te 38 D> [Rec LeveL R] cagq NUMASBOD__p8-4
10516 (2/2) : aa 285 rox 10° 30 rane e
F Nanonbe ; oo RB0s 2 atl 28S TO SYSTEM CONTROL(F } SS —? ot 7. ts a Bo |
= as BOARD = peo ley 2B aR 3 |g2 =
.
+
6.8
18
R286
&-
ne
$2~
g4°
ae
oe 5 ye —@$_3 SCN507 SL “ fone a z= yo SE
~~ is
{[AUDIO(C)
BOA
RD]
DOLBY
ON:3.9
atv
2k
Soy
(See
Page
35)
“i
g
*
*y
Ses
zm Og org Fok x
CAL ON:-3.9 ‘3 - ie odie} sa S
1C517 ; OFF: 3.9 5 . ; mak @ [wie 9 eo7
2 DOLBY OFF :-4.2 B ~ [tz eee :
HEAD PHONE AMP 0102 y a sl (8 2158 oe,’ Cy L205 -
DOLBY-S = = = 8 : 2) °3 BA orn 3 HRP5O1
1eS7
Wa)
282
x
SWITCH
3
z
Z
3
oN
aL
ory
se
|
Ss
=
|
REC/PB
HEAD
s 2 - x a2
oO, 3 OV is <= CPI0] TO DOLBY-S BOARD CN € .& 3,3 | bean & 2 <i (2)
N ie) = te =
R247
aie
Pa
:
a
2a8éa25
|
oe
on
:
at
so
G 220 ba keg 0 ! z We !ron 1! | 4 AMS. MODE eaeeet nee al h \ n © jf) Be b> ; é ; =~ g
7 = || dates he | | Poot [el eee ot
22k Rid H aad Ll | | 5 fo56 0606 6 S ¢ —<TYPE. 1 9 a SS | 220 500V
-a4m) BS § pa a ae | i a ee Peyson | ak La ar)
: oa 0 0 ¢ eNO op Net | os <TYPE.2 :0.7
PHONES Be = a | a |e fe ne Mal LL J B Bea pees, |
RIGS
Zoi
3
3
ry
ea
&
0.7
>
L405
ast 8 ease -y —_| +s oe all lis él BS
oe
zx
L
of
6
Ex
CAL.
SIG
is
(es
as
wl
@
Ss
A
2
o
Bx
o
35S
ex
on
Th
I
2
7
Sa
L.OUT
®)
cz
*1s=
7S)
S)
€
x27)
Fe“
oF
=
=)
a
: SS Mesos \-y LV oy 160 0.047 Sa\ V8.4 38 aa =
=2 j ay A 9 Qo 2
I Es iin ay & oe &lel ¢ a TYPE & a TYPE aw
“TF RYSO4 RV504 | = MUTE 2 S12 P| 0.7 [07 8S
“1 20k B L.OUT ©) eg : =! 0%! css [eS Lee A186 iy : 440 te «07 SSE
PHONES I : El ote tis S 100% S ain Race xt na 180 xt
LEVEL . ea = A= ase yo aw} wot sa] oo
H
70/120
a
[|
a © 9
Sosy
xj]
2&:
c&7
282
57
ANS. S16 & a Te | 3 as fae s] cs) a CST
- | a ga |= Id fz} SEE g Bie sh
2 i L re Dip gee St 8d 5 | aot 8 lac] SY gle bo
of : mes a) a
{AUDIO (B) BOARD] a Ea z 10 Sov iesis ava 83 Sez “| “S|Be 3
| REC LEVEL L NUM45808 z= ze 4/28
CNOS SCN5O4 a] a a
502 R248 AP EH) WHT 4P ieee a ait : Q112,212 QH3 ,213 10513 555) a
109 t I cP202 TO DOLBY-S BOARD CNI REC MUTE EQ SWITCH REC AMP A Bx
. as
iB] 5 : * BIAS CONSUMPTION Q14-116,Q214-216 R304 “s
LINE OUT we | | x 209 B=" CURRENT R REC EQ SELECT SWITCH
Aue
fot
s~
2
SCNSSI
IC514
i—
L~CH
f
oS
TG
=
a
;
Leet
Ze
©
ROtRY
Ss
fgg
0
¢]4
[RECORD
BIAS
R ie
] Rpaa Lj SWITCH HX PRO Ben
o Ss >
oie ees sHsse sa) ss EE 0521522 Se mgs
(38%
!
Pye
|_|
2
BIAS
SWITCH
.
29k
:
1
C255
t]| @+- ie eas R273 22 Sov 22° Sov gaye |
2360 x 952! :
7k
<
2skiz4s
[—W
= 84 gies Bt
l 4 =>> a, [Bs fe.
an. 4
C511
x
9210
:
:
oie
E
BY A DOLBY-S 9522 os
MI
DOLBY
AMP,
OFF
~8.4
©!
2803402
4-4
=
>>
DOLBY
ON:
39
ei
oR
o0e
3
=
Laat
T
: aa cA 3 a 9 ;
=
‘ges
|e
;
ae
»
||
fe
J
“SP
ES
DOLBY
OFF:~4.2
=
3F¢—__+
Q514
0210
oO].
0
:
8
EH(LWHT ; SCHSOG, 4 — ELA ee fe | ~6V REG 25K50A at 7
k —o.
9 0] Le oo 9 a - Fa ih
Le 5 3 , emo Sg -9—¢ 2{& B T
= g iD Wx] nN
nag | BE S x § 43k anda f @ fol o|* 8 B s
Alea
Be
sel
|
et
eke)
g
S.|
S/S]
~
ie
BS
8 p] 2 "eK pomes [slog s} 2} 4[°2)] 3/s ee] s S37 3
a s ef Aas] Lo sl clad “Ll el°(TSl c
3 eS 8 ! i ' 2
i) 2B =, eet 3 oT st 4] - BY oT Ro g 728. } |cizs BIBS CONST ME TION
B
10K
3]
f/3
1°]
Pla
kere
IS7eal
°
o
gy ON ONL ay KB Be R302 5.6K
K OHO) 8.7 Bo i
w=
BEG
0 0 0
0
7978
3%
5 0
6
0]
[RECORD
Bias
U]
~ fre? ® ge y PEPE dae Ss £ lB 0528. 8 Q527,528
za*St~j
o
§
BSB
Rwy
&
FS
FS
E€E
FS
F&F
F§
FE
=
BW
F
Fy
‘
3 a a an a Se oF x = g 2sCi8tS (5.7) BIAS OSC se
5%
Smo
40
40
0.0
9
0
79-8
0
-8
8
0
19
40
8522
(N4148M
eS
a
HES5O1
3 — c—J 4
O68) HHO Seg Gi a ap $ 01 “ ERASE
oe BS ae S|. 2 BR % | 2 ¥ 4 RYSO6 < Z ues
a
}
stad
s|
2
rok
|
=S
3s
=
3
4.7K
8
z
« ae. ees plist sl sl bel “Tsk él” ERASE CURRENT Ss og
i
rr)
ome
we
eo
on
x
1 “S$ & 1 we “Ts $7 =) 2, 7 slsilse7 $7 on SWITCHING “3
L Sy + 8 con 6) 6 Sot G/SHTo?}] oe] & = Q526 >
2) = pusend i =x] ¥|c ray ae
= 2S 24 2) 2} 2 85 =a -8.1 RIPPLE
d
a)
\
ad
OG
“2
[4501
i
+
FILTER
re Q ) 3 s S (5.4) b« Q Ps jac er: .4 BS
gui Ea
: 0 25K30A : ,
R310 47k | q Groaisrs ON hoa \ Lael”
Ge | -42 »__ £178, 10 Sov . 0 | ; } } = 2p ER fet
B:0 ° 0
: 2 | i ERASE CURRENT
(3) C42 cr >> [Erase current]
f | 2S 2stsi02 253402
3.5k cP103 0529 2SA1345 = = oa
oS, _o TE.
8.4 — A ARS
3 Q517 sf] [es !
M ap BY cisg cis -8.4 1) 2805398 = = :
1C510
A
al
oa
[ce
fae
ee
1 INPUT AMP ° fa 84 ASIP | | s7 Ts
s s] 13 BIAS SELECT SWITCH
ICSI MODE w— c aCiy, a] B| |B
CAL:
CAL
aie
>
+
983!
7
i
A
|
REC SOURCE (R572 OR a 2541348 ar) BLs 4 4 PN
PB : MPX 7, RY Be 18
Q109 = |= 9530 518 1p |
DOLBY-S $ 2505402 28¢3399 cnsi2
S WIT a 1 3
me “84 Be Ror aire S 3 5 3 ee MT BLK EO]
CAL-4.6
2
l
Q517,
529
a:
'onsy1
ta
ee
i [B-| DOL aa BeReeeseee KH ea°Ssae 8 ee
N CP102 TO DOLBY-S BOARD CNI 2p 2G 8h $8.4 0530,53 1 Q518 Soleee se 55 Wo kh > PRS M 2
MPX SWITCH DOLBY ON/OFF I ta) Mee ee SS i eS ae oe = oS
0 5.1 -8.4 Ee 2 G2 Tip eo? eo Cv
ca:-3.4
9532,533
|
oo
g.4
MexFILTER:
84
MPX
<a
5
=
o
3
MPX FILTER: 3.7 CAL 2 8.4 Gr K J = TO SYSTEM CONTROL (C} BOARD
os
SWITCH
MPXFILTER:S
DA512
ee
Te
=
=
a e TO SYSTEM CONTROL {A) BOARD (See Page 35)
CNPSII
DA51O
(See Page 31). (See Page 31).
—19— —~ 20 — —21—
21
22 23 24 25
(DOLBY -S BOARD]
26 27 | 28
€38 33000),
R43 ilk 2%
C39 0.022°
st
R45 39k 2%
C40 0.1
25V Ri 33 2%
+
C2
FEED BACK LINE OUT REC OUT
TO AUDIO(A) BOARD
CP101, 102, 201, 202
Note:
* All capacitors are in uF unless otherwise noted. pF:yuF
50WV or less are not indicated except for electrolytics and
tantalums.
* All resistors are in Q and 1/4W or less unless otherwise
specified.
° % : indicates tolerance.
* fw-+ : fusibie resistor.
* [__]: panel designation.
Note: The components identified by mark A or dotted
line with mark A are critical for safety.
Replace only with part number specified.
x R25 10k 2% ; ES
s ee aes
&
NUM
4580E
x
6 x| 8 Y
2
N
=
N
3
= g|s| 8 ce
* © Py
0. ST oF R22
zl 3 ol 15k 2%
o N a ss w
B= 2 x ig ls leg
R uw m ™ °° = & TSS
C29 0.1 2 | 24k 2% Slie * js [8 Le
tt = Ae 2 £|8 = |8 |&8 s6
32
|
Bx
8
R29
=
rw
|
|r
8
ota
|S
oe
27k 2%| = CB] 51k an | Se lik 2% AT « ot 7 B5¢ SA
ANY AM ls zs | aN =
<4 T]® |-ae
3s
be = 0/0 0|0 C17
fy, |e 2 PP 8 4 <a? 0.1
rs VERS Me GOGDOOOGOS, ee
1c2 (1/2 a as sa
NJM4580E oS Be El |o t5¢52dze2agg2 a 36%” 0.47 25
C30 0.47 25y zf3s3egR8 aR RkeNECS +
My WN Ai ~) CBO = i Teri (26) RIS 2.4% 2%
R37 11k R36 30k R35 _30k 4.8
aie ae oe 2 8 —4.6 RI4 eos:
34 | R38 36 C33 ° IC1 (i) ; :
K MEIN ZHF2L
ve “a ae e MC4IN pe ZHF UL (20) —— We ese Sass
R39 5. 1x 2% Re 0 NOISE REDUCTION RIB 12k 2%
35 {boop 0. ae
C36 Ol 0 att IC} CXA1417Q
Rol 16K 2% 0
R42 8.2k 2%
°
= 2 °
se (| NS x |e
3 N 4 N N
~ 2 m
= ed S
= x < £2 €
~.
N
“
4
-
ae
- yi = z me =
= i z 7 ro ind
xz 2 s ro)
x od i
x e cy a wn. 2
S 3s a = Ss ou,
- nN 3 A =
sy = so Te a TSN
= 2 a S. oS
- KI
wn v
ou a
WEEHE. B+ Line
BES: 8- Line
(___]: adjustment for repair.
Voltage and waveforms are dc with respect to ground
under no-signal conditions.
no mark : PLAY
( ) : REC
Voltages are taken with a VOM (Input impedance 10MQ).
Voltage variations may be noted due to normal production
tolerances.
Signal path.
x> : PB
yD) : REC

« IC Block Diagrams
iC1 CXA1417Q
1C502/511 CX20188
REC OUT-1 Q1)
VbdHZ
T2AHZ TESHZ

5-4. PRINTED WIRING BOARD — AUDIO SECTION —
«See page 14 for Circuit Boards Location.
=e ee ee ee ee
T= sil 26e. — 2Gs- 0. = i or ES = IE A be Oe ee a Oe oo I. er ie ees = ol
HESOI
ERASE HEAD (RED) WHT
Q
ia
=
(1/2)
WHT| {PNK
|
A
B
-
G
D
SYSTEM
CONTROL(A }.
SeNT08
See Page
E 30)
F
Ke
G ott
CNPSI
(See Page
29)
H| ©.
Foust!
DASI2
(See Page
t— 28)
|
——4
J
K
Ki
2
os
Ja]
CPll
METAL BIAS |
‘couse ye
aieeciniinaian
HRP5O1
REC / PB HEAD
«BLU
(2/2)
235
ci25
C126
oo 8 :
S
x
aN es SS
Sy {DOLBY $ BOARD] (SIDE A) {DOLBY S BOARD] (SIDE B)
SYSTEM CONTROL (A) aE, Oo — F
SYSTEM CONTROL (F} BOARD Bae ‘of
BOARD ae a
DA5I3 (See Page 29} :
(See Page 27)
iS
i a
oy oe
fe
‘te.
FeSODS J
ey
Be “ss
Bef. S
eae i
Sy, “Siew yaseraansaans pate
SisreememmnemnaneaaaERRe SECC
oo 2
g
3 ceubineceresrne PO eested
Sa prainmeeunnia sec orca ini
—
aes See eee
ere Ceres
a
PB LEVEL L
QR wee
et
, oS
‘irae ye:
queer,
Pescorses
Se
i 2 an ane
S oe of i oS &
sate,
ELGG GB He
E gwvaniansianianistee mma ey, By
SYSTEM A : '
CONTROL (F ) & ‘
ae
Sy
alee
esa
bed
be
pj
aa,
(2
: : s ree SES eeemeewn genome on ye
(See Page 27) eagealee [i2]
[AUDIO (B) BOARD] [AUDIO (D) BOARD]
i, immense pI
po AER TREE EISNER
Sf ORE RSE PATTER SAE ERE
RECERCAT EEA LEE EBC EEE Se.
aepeaagtree
R50}
REC LEVEL,
|-654-603~
I-654-603 —
Dix,
¢
fl,
:
:
ah
2
i
Fi
A
aa RRL
L Eid SSS ‘
a
GS
Sag
essa
: : i smnenerocomineroantre
= BR “eranpeensensnenee sae stecomnensen sence ai i are MENON
: Dy
ae
SSE a
giinreriianancaes
e
SYSTEM
CONTROL
(F
}
oo
=
BOARD
SCN507
1-654-603-, ul (See Page 28)
« Semiconductor Location
Ref. No. | Location
B-14 Q115
Location |
6
1
ok
mmm a4
ALA
-
oo
i
omunumx
=O -~WO
-13
D-13 Q214 K-6
J-8 Q215 J-6
H-8 Q216 J-6
G-6 Q231 F-14
G-6 Q501 C-4
K-3 Q502 F-
J-14 Q503 C-
I-14 Q504
On
OwWwowort
Q505
Q506
Q507
Q508
Q509
Q512
Q513
Q514
Q515
Q516
Q517
Q518
Q521
Q522
omOG
nwo —
Ah
©
omommo
SAN
w wo
NOO BRO
om ©
ve Be mak 4b
— ©
1 1
—_— —- —s OO
o-O
Pk
IONOT
qa
1
ye)
a i)
D-7 Q523 G-3
B-12 Q524 G-3
B-14 Q525 G-2
B-14 Q526 L-3
B-14 Q527 K-3
F-13 Q528 K-3
x
2
Q529
Q530 J-14
Q531 1-14
Q532 J-14
Q533 J-14
TC-KA6ES
* o—— : parts extracted from the component side.
. @ =: Through hole.
Pattern from the side which enable seeing.
(The other layer's patterns are not indicated.)

TC-KA6ES
5-5.
PRINTED
WIRING
BOARD
—
SYSTEM
CONTROL
SECTION
—
«See
page
14
for
Circuit
Boards
Location.
* Semiconductor Location |
Gi
a
se
us
ee
8
O-
b
O.—_
e
55
|
16
i7
|
18
(oO
in
BO
er
|
24.
|
2
|
26
|
27
28.
|
29
30
3|
eto, |Lcnin [it [Lin
iC951
IC952
161001
IC1002
[SYSTEM CONTROL (C) BOARD] [SYSTEM CONTROL (8) BOARD]
p OPARS
Seg ae ee
ae
Sees
Sx See Ue Y
Q301
Q302
Q303
Q304
Q305
Q306
Q307
Q308
Q309
Q310
Q311
Q401
Q402
Q403
Q404
Q405
Q406
Q407
Q408
Q409
Q410
Q411
Q601
Q602
Q603
Q604
Q605
Q606
Q607
Q608
Q701
Q751
Q752
Q753
Q755
Q756
Q757
Q758
Q759
Q801
Q802
Q803
Q851
Q852
Q853
Q854
Q901
Q902
Q903
Q904
gurantee
1, Hemsancseanemseiant,
iy, hy
[SYSTEM CONTROL (A) BOARD)
TO AUDIO (A}
BOARD
CNSI3
(See Page 24 )
TO AUDIO (A)
BOARD
CNS5I1
(See Page 24)
VMNMNNMONYDAARAR AA
VOOQNNN0N0N0TNN
NBDE SSO
ee cf “enti aeaaesneneen secon agnmneesat crag)
AGk de Reiger erate eee a
OX RUA Se
_gotsasessesas138 S894
esac renee
ro re
|-654-604 -
t
easineavennesanse
comcenecsesnt 8
<1> —~
— & N NY
x0
scan
TT N
Bs.
AMAA | OOO @
OWONNNHOBOOAAA
I
aN
REC LEVEL!
a
$863 O
880 [TIMER]
PLAY —»OFF—*REC
&
“Rraauavammnonmeaat
TO AUDIO (A)
BOARD
CNS5I2
(See Page 24)
TO AUDIO (A )<t—4
BOARD
CNS5OI
(See Page 25)
é ¥ © ~
L ‘ nascar. 8
— commana
"he
; ~
A corantne cbt
a
TO AUDIOLA }
BOARD
CNSIO
(See Page 24)
DOLBY_NR
OF F-»B-*C 5
1-654-604- |-654-604 -
FORME AERA EIT STE
TOO!
POWER TRANSFORMER
Po se Ph ee al tet ee we ee
Maem ee
sonnets
[MD BOARD]
[SYSTEM CONTROL (E) BOARD]
DIDO!
CASSETTE LAMP
(SLF-325C)
ee
SS
SUPPLIED WITH
ORNAME TAL
PLATE
SS
B
$100? SI006
(METAL) (HALF)
[FG BOARD]
ec esonsceoses
a
“
TO AUDIO(A)
BOARD
CN507
(See Page 25)
1-654-604 -
1~632-740-
2*NOT REPLACEABLE
BUILT IN TRANSFORMER
TO AUDIO {A}
BOARD
CN701
[COMPARATOR
BOARD]
(See
Page
24)
RA
*SIO01 ROTARY ENCODER
Mmm: ON
‘4 1
134 64"
* o—— : parts extracted from the component side.
* _ : parts extracted from the conductor side.
. A: internal component.
“=: Pattern from the side which enable seeing.
_ :
ee ee ae
— 27 — — 28 — — 29 — — 30 —

TC-KA6ES
Note:
* All capacitors are in uF unless otherwise noted. pF:wuF * (EERIE: B+ Line
50WV or less are not indicated except for electrolytics and + EES: 6-Line
ee
ee
ee
eee
*
([-~]:
adjustment
for
repair.
a
are
in
Q
an
Pee
ives
eMervee
*
Voltage
and
waveforms
are
dc
with
respect
to
ground
under no-signal conditions.
no mark : PLAY
( ) : REC
* : Can not be measured.
* Voltages are taken with a VOM (Input impedance 10MQ).
Voltage variations may be noted due to normal production
tolerances.
. A: internal component.
« fw~+ : fusible resistor.
* [-__]: panel designation.
Note: The components identified by mark A or dotted
line with mark A are critical for safety.
Replace only with part number specified.
5-6. SCHEMATIC DIAGRAM — SYSTEM CONTROL (1/2) SECTION —
«See page 34 for IC Block Diagrams.
* See page 37 for IC Pin Function. (IC801)
1
2
3
4
5
6
7
8
9°
10
11
12 13
14
15
16
17
18
19
20
21
TO AUDIO(A) BOARD
CNStO
(See Page 20)
~
TO AUDIO(A) BOARD
© CNSII
(See Page 20)
(See Page 36)
c iz TO SYSTEM CONTROLLF} TO SYSTEM CONTROL IF } BOARD
le aj a z a BOARD CNP804
2 Se 62 oH eo Suzy —. CNS OS (See Page 36)
wo i NE! <a = Cur rere Oia
Wow WwW n w io mammae sr a
Ww Ol~aoaalwMm «jo Zz 1xljsgugper - NM + WY - NM nw
wZk eS Se ie = xafooogvdi > > > > > Goae So
> oe ee tm fe. rEieaovrzn pa (ares ere Seo! ae | Www Ww uo
i
a
pee
FS}_e
5
tooo
4]
(poo
33}
—_—_F
oo
$$
3]—
-
—————-----
<-->
®®__—_—_—~—”'—'_
sar
>>
ner
-———
-
oe
aes
S CN8O3
10 CNPS!I % ! 6 CN8O4
[SYSTEM
CONTROL
(A)
BOARD]
8P
MT
WHT.
}
>
SP
MT
WHT
GP
MT
WHT
iC601
IC602
|
[
REEL
MOTOR
BOARD
]
[
COMPARATOR
BOARD
}
2/8|s/2
215/315
1C601
1ce02
2
ot
S28
a
etnt
et
BAg2i9B
REEL
MOTOR
‘ORIVER
LBié41
ASSIST
MOTOR
DRIVER
i
L 2y STATA SST ATS
@
2/2)
3]3]8/2/8/2
ea
aaa
A101
cwi0s3
2
=
re
:
380
1
r
&
Z
{
]
1
(A
|
@
fia
°
~
|i
|
=
| 2 5 ~ 2? 8 8 Sh 81001 erehsy-4
|
pSepes
isp
toe
sl
See
CAPSTAN
SERVO
A
5 8 |
| as ee, 01 LDPPOOPDYP-a
REW:4.5
fi
5.1
12.2
aot
peas
1¢952
I
t2| | 3
L
|
!
+!
ry
4
REW:
0.1
TC9142P
ia i l eae ey
Le
|
(4.2)
:
6.
(N1051
|
ree
!
Q603,604;605
0.2
‘
|
gee
oP
Nat
:
een
4
~
7
-
+
’ ’
an
ci
r4
1
|
aI
we
SE
RUG:
SHIT:
REW:6.4
—
REWS.I
H
ae
jee
ASSIST
+
re
watt!
ane
i
Tw
1¢603.41/2)
1603272)
Balen
REEL-
7
ar
I
é | B+ | fi 12.4 9697 Nuuassal NUHM5S8L fl need ciend ene
\
t
:
|
Lol
eet
-
4+9.2V
Sai
$
1
w—
|
|
||
;
4.412MHz
$1]
4
|
I
4|
\I
z
12.4
O7
:
oy
REEL+
SERVO
GND
3l | 3S 9604 / +9.2V
=
ee
cosst coset agsoe
+
C957
*
aL
=
2SA1365
a605
2x
Sts
Zhg
Hcy
Lo}
SERVO
GND
Sp
T
1Se
820k:
0.033
1
;
i
2SA1345
SS
lg
any
eo
ee
é
'
1
= 62 ¥ i
2.2 - < f Ic9S1_ »PC45S8C
cNgoz
83
4
[ToRovE
12-4
A&
a
<2)
:
LL
4
rea
x
é
2
=
“Sits
wale
5
ah
See
2}
le.
%Z
12
eae
$58
|
CONTROL
2P
4
932
exo
I
se
=
=}
sg6
e
Bey
72a
feo
|
agsy
120%
é
22
R813
10k
2
¥
Bo
=
i
26046
2
470
ROSS
7
Sov
KEY-IN
~~
*
@Z7
6
gs
&
ihetean
=
4
oz
-—————
-
Dew
28
YOx
i)
ROSE
TO
SYSTEM
CONTRO
RO1E
10k
~
1g?
EY
se
02
Res
12
eee
.
t
D
=
Rie
pce
OOLBY-SW
Ait
Q8o2
Q60!
9601
8
3
9603
f-|
lesions
an
2
0
[MD
BOARD]
—
Fy
|
0
5
(C1
BOARD
Val
LINE
MUTE
asc3sea_|
2s¢3399
={3
2803393
=
rile
Bo
Ua
aera
gina
3 4
paso?
EQ-VOL
obi
Liane
FAST
TRO
oe
a
ry
Let
I
R952
4.7
LEVEL-VOL
Fst
4an
sw
loa’
3
ho’
ie
a
8
Peete
i,
74
(See
Page
35)
a0?
Ts
oz
Ua
3—
C605
se
781001
Gate sacs
SIRCS
e
28Ai
345
ica)
ees
=
alae
1C951
+O
022
;
gi
le
t=
Ks
cN1001
-
;
953
e
e
-
.
oP
J
FG
AMP
T60
aT
ae
80h
cee
2/3]
=
=
r
Q602
PATERN
|
zy
fr
i
&|
/e@
RBIS.
10
5m
SWITCH
P)
9)
T]
A]
ahs
SPB!
ha
PLAY
PATERN2
$1001
|
TEST
MOSE
t|
a
+
——
2
ad
i
Os
ns
>,
Cs
TRU
a
:
TRO
SWITCH
Qe
Og
IC603
ein
ROTARY
-
6NO
5
er
z/2/zl
elo]
af
slo
=f]
s| 1S
3
MOTOR
5.1
PATERNS
ENCODER
8.
6)
olo|¢
:
41S]
hs
i
5.1
CONTROL
LOADING
SERVO
PATERNA
:
soo]
40» 2 7 ee a
5
SAK
EBX
EDKEINEOK
SSN SBN
SP
SEX
SEXSHY
SIX
SDK
SIX
SOL
SIK
EBX
ATL
UE
LESS
LED)
OPEN
SW
oo
51004
OPEN
}
cNg52
(5)
Q803
Wes
epee
wy
gt
=A
ev
ultram
sus
2}
3a]
sl
el
7
0
hee
CLOSE
SW
Sho
—4
31003
CLOSE
BIAS
SWITCH
54
feel
5
ee
23333!8e¢e8e¢e8
SP OR
we
DOOR
sw
S\o_J
51002
900k
rr i Sa
|
R812
§
65)
Une
nie”
«2 15 jg
°
ge
©
Pro
(4
LF]
PATERNI
ih
2.2k
s
2.4
0
al
FwO
TAB
$1005
FWA
TAB
+
(68)
REC
MOTE
ptt
(33)
oj]
PATERN2
205)
0
ae
Seren
ll
3
IAC
Le
pr2
G8)
-
|
ro]
GND
\
os
a &
as
i
963)
ARS
HODE
01921
PTs
G7
oa
7.
ie
OW
PATERNS
“8
#2
#2
+
é9)IYPE:
-8.4
Torsion
aw
GE
:
+
]
PATERNS
Fy 3 .
H
=
Ce
mn
JOLTYPE2
pe
SYSTEM
CONTROL
cusw
3S
0
Es
|
OPEN
SW
Crees
TYPETE:S.1
MECH
CONTROL
arW
G4)
TI
CLOSE
“ow
y
CAL
MOBE
gq
ic8ot
(33)
oy
800R
SW
oes
are
M38172M4~
[33
FP
eae
lll
X73)
vee
TYPE
IV:5.1
ves
(32)
P
CoH}
FWO
TAB
I
Zo
yes
past
:
Vee X-OUT <523| .
X-iN
i
xc-out
(28)
,
801
SHHz
\
REW:5.1 5. XC1N
REW:0 AEST @ fey si00s 70 #
Sip axe | SREBETS
<0)
PwR BET
80S
10000p
pe
ry
51007
METAL
i
4 1C1002
2 GP2S22B
aaa)
=
TAKE
UP
REEL
S
soit 5 cnro0e!
10¥
1010
@
roe
1101002
|
002
é
Sw.
COM
;
:
TAKE
UP
REEL
Al
METAL > DETECT
a a
|_|
Tenner
1c1001
+5V GP2S22B8
GND SUPPLY REEL
S.SENSOR
R808 300
3
R809
10x
HALM
C1001
]
Me
=)
|
SUPPLY
REEL
1y——
4
DETECT
A 108 He aT RE0S 3.3% +
rT i}
ioe)
RESET
iM
arraT
A
y
51006
HALF
SR-IN fro Wy Soh
| O + a
abe
R802
100
i
ha
aa
ne
eee
| R801 100
YNC Ho AW
TO
SYSTEM
connor
(RQ.
oNNe
|
x
Se
ap
BR
BHT
(B)
BOARD
\
GNB
fo
&
&
ie
DABO!
+5V
fro
a
+
ae
s
g
i
70%
7
Ee
anna
Sis
REN
Teer
sels
uf
3
3
‘
-————
See
Page
35
V-BISP
jo
Tas
Po
——
2
2
Sw.
COM
(
2
)
HEATERI
[to
ss
|
—_t4
|
METAL
[
CAPSTAN
BOARD]
HEATERZ
[[4
Tl
T.SENSGR
ROIt
<<
10
bil
+5V
220
bl 6NO ae
ae
'
-—
of]
9:
SENSOR
I
ston HALE 2 a] 3
8 63 8
ecler4 (B) 3 S328
CAPSTAN MOTOR e ef 8
ilets{e74 0752 ,757,758 1 DRIVE CHS,
ETT
+9.2V
REG
cx-20
wey
EEP
RO
R808
R759
i
eee
f
|
10K 160
3
;
9752 4008A { 1S \
Ra07
2502012
19.2
°
=
10k
g.2v.
92
TER
pp
13.3V
VOE2N
i
=
A
'
? SYS tt CN704 i Ses i!
&
ne
ap
EH
WHT
SCN703
°
T001
:
1
& parle pg «=: RE. «0751756 aS oe io moa power!
7
2a
8.
+I2V
REG
wd
1OE2N
||
ee
|
i
TRANSFORMER
=
|
e < 3 > || ry 1
= 879 ‘ 3 |
YY oft 9701 CY s 3 rou ry ie ! \
1C751
2,
Be
d
2802603
ean,
8g
58
3
e
i
RESET
0756
4
3
NA
=
SND
Ld
o
©
i
x» 2802603 +1 sys &) F70} 9708 10E2N x ¥
if
3
+L
c75s
T
Veh
8710
1N6148H
ina
1
1
09
1e75!
—
ex
x 7
Eg
—>}—
°
°
1
5,
poletou
5.1
BS
SS
B
Sov
Lf
Te
1
.
=
=
|
See
-
:
|
|
{SYSTEM
CONTROL(E)
BOARD)
R772 x ho fd af
“12H $701
@)
ea)
8
U2L-i2H1
8709
10E2N
r|
i!
(Pane)
St
=f
4
a753
.
:
[power]
Se
Ss
Ws
i700A
:
CEO/CEE+
2300
|
=
dk
A
cN701
2p
i
wall Re gly Bt i oN OF AHP
{
& N703
SiR
WW
3p
bar
7)
A
2 “= se
aed
) R760 2.2 fT = ' AC IN
}
=
;
=
5.8
H
eee
c701
Ea
Se
Wane
nie
ee
Sa
l
cwp702
vn
“100000
at
23
=
RED
400V
I
& —_— a - a
5
8 % NOT REPLACEABLE
Q753,759 BUILT IN TRANSFORMER
+5V REG
& Ey
a wRIn+ Ox
SF ~| | ua S. ss
i
e{
8
=
=
& os
2 S 7 =29, 2756
Q755 Es = 82) uly box
=o 8757 SS
~ 26V REG BsT VOEZN 7)
~zev 7 > 35.8
758 Q7s5 35.
|B | UZL-6H3 28.5 298734 Sy
TO AUDIO(A) BOARD
: CNT7O1
(See Page 21)