Sony HCD-D170 User manual

HCD-D170/G1100
SERVICE MANUAL
US Model
HCD-D170/G1100
Canadian Model
HCD-D170
HCD-D170, HCD-G1100 is the tuner,
deck, CD and amplifier section in
LBT-D170, LBT-G1100.
Photo : HCD-D170
i
Optical. Pick-up Type
TAPE Model Name Using Similar Mechanism
DECK
SECTION | Tape Transport Mechanism Type TCM-YSW47C24
SPECIFICATIONS
MICROFILM
AUDIO POWER
Tuner section
FM stereo, FM/AM superheterodyne tuner
SPECIFICATIONS
POWER OUTPUT AND FM tuner section
TOTAL HARMONIC DIS- eUe Vane ae
TORTION: Antenna FM wire pine
LBT-D170
/LBT-G1100:
alae
ee
75
ohm
unbalanced
ntermedai
requen
With
6
ohm
loads,
both
ee
07
MHe
channels driven, from 70 —
20,000 Hz; rated 20 watts per
channel minimum RMS
power, with no more than
10% total harmonic
distortion from 250
AM tuner section
Tuning range 530 ~ 1,710 kHz
(with the AM tuning
interval set at 10 kHz)
531 - 1,710 kHz
(with the AM tuning
interval set at 9 kHz)
ce
Antenna
AM
loop
antenna
milliwatts
to
rated
output.
Eslernalanicana
CD
player
section
,
terminals
System
Compact
disc
and
intermediate
frequency
digital audio system 450 kHz
Laser Semiconductor laser
(A = 780 nm) Emission
duration: continuous
Laser output Max 44.6 pW*
* This output is the value measured at a
distance of 200 mm from the objective
lens surface on the Optical Pick-up Block
with 7 mm aperture. ;
Wavelength 780 - 790 nm
— Continued on next page —
COMPACT DISC DECK RECEIVER
SONY.

Cassette deck section
Recording system
4-track 2-channel stereo
Frequency response
(DOLBY NR OFF)
60 — 13,000 Hz (+3 dB), using
SONY TYPE I cassette
60 — 14,000 Hz (+3 dB), using
SONY TYPE II cassette
Wow and flutter
0.1% WRMS +0.3% (DIN)
Amplifier section
Continuous RMS power output:
20 W + 20 W (6 ohms at 1 kHz,
10% THD)
Inputs
VIDEO (AUDIO) (phono jack):
Sensitivity 300 mV, impedance
47 kilohms
Outputs
PHONES (phone jack)
accept headphones of 8 ohms or more.
SPEAKER:
accept impedance of 6 to
16 ohms
General
Power requirements
120 V AC, 60 Hz
Power consumption
65 W
Dimensions
Approx. 355 x 425 x 400 mm
(14 x 16 3/4 x 15 3/4 inches) (w/h/d)
incl. projecting parts and controls
Mass 8.9 kg (19 Ib 10 oz)
Design and specifications subject to change
without notice.
MODEL IDENTIFICATION
— BACK PANEL —
(7777) + PARTS No.
MODEL PARTS No.
D170 : US model 4-978-187-0000
D170 : Canadian model 4-978-187-10
G1100 : US model 4-978-187-80
Dolby noise reduction manufactured under license from Dolby Labora-
tories Licensing Corporation.
"DOLBY" and the double-D symbol 1] are trademarks of Dolby Labora-
tories Licensing Corporation.
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.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE MARQUE A
SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTE
DES PIECES SONT CRITIQUES POUR LA SECURITE
DE FONCTIONNEMENT. NE REMPLACER CES
COMPOSANTS QUE PAR DES PIECES SONY DONT
LES NUMEROS SONT DONNES DANS CE MANUEL OU
DANS LES SUPPLEMENTS PUBLIES PAR SONY.

CAUTION
Use of controls or adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
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.
Flexible Circuit Board Repairing
¢« Keep the temperature of the soldering iron around 270 °C
during repairing.
¢ Do not touch the soldering iron on the same conductor ofthe
circuit board (within 3 times).
¢ Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform
the following safety checks before releasing the set to the
customer:
Check the antenna terminals, metal trim, “metallized”
knobs, screws, and all other exposed metal parts for AC
leakage. Check leakage as described below.
LEAKAGE
The AC leakage from any exposed metal part to earth
ground and from all exposed metal parts to any exposed
metal part having a return to chassis, must not exceed 0.5
mA (500 microampers). Leakage current can be measured
by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229
or RCA WT-540A. Follow the manufacturers’
instructions to use these instruments.
2. A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for this
job.
3. Measuring the voltage drop across a resistor by means
of a VOM or battery-operated AC voltmeter. The
“limit” indication is-0.75 V, so analog meters must
have. an accurate low-voltage scale. The Simpson 250
and Sanwa SH-63Trd are examples of a passive VOM
that is suitable. Nearly all battery operated digital
multimeters that have a 2V AC range are suitable.
(See Fig. A)
To Exposed Metal
Parts on Set
AC
es voltmeter
(0.75V)
= Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.

SERVICING NOTE
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer
electrostatic break-down because of the potential difference
generated by the charged electrostatic load, etc. on clothing and
the human body.
_ During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled
with care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be
focused on the disc reflective surface by the objective lens in
the optical pick-up block. Therefore, when checking the laser
diode emission, observe from more than 30 cm away from the
objective lens.
[All lights of FL tube]
After the power supply is turned on, press] TUNER/BAND
button,| DISPLAY/DEMO |button and | FILE 2] button
simultaneously to enter in the mode which the FL tube lights
all. If you want to quit the mode, press the above buttons
simultaneously again. —
[Switching the channel step 9 KHz/10 KHz]
Press LENTER/NEXT]| button and | POWER | button
simultaneously to switch the AM channel step 9 KHz and 10
KHz. Be sure not to change with carelessness.
TABLE OF CONTENTS
Section Title Page
SECTION 1. GENERAL .....0.0...... cc cocc ecceecccescescccsescceeees 5
SECTION 2. DISASSEMBLY .
2-1. Front Panel ASSY and Main Board .0.... ccc ceesecceceeee 6
2-2. TC Mechanism Deck oo... .eccccccccccccccccsscsscsscssscssssssesscecees 6
2-3. CD Mechanism Deck .........cccccccccssscsccccssssssscccasceseceeceeneeees 7
2-4. -BU Bracket ASSY uu... ccscscsscessssssssrsrecacscccescessssesens 7
2-5. Disc Table ......... sd ladiosllatuas don'esleuevas vob Seaedertaaeebaseemteatyens 8
SECTION 3. MECHANICAL ADJUSTMENTS ............... 9
SECTION 4. ELECTRICAL ADJUSTMENTS
DECK SOCOM arsicccciciuccebesicaddeasentecsevevenccessceleattevcotduebosnaevinteeeds 9
TUNER S6CtiOn....c.scccsscccossssccsccccoccesscsscseadesvecvesscesnsevcnvessecvesevsesses 12
CD SOCHOn iieesceieds hei tevdictearceedtecgendes HR lok ines Gieescleehies 13
SECTION 5. DIAGRAMS
5-1. Circuit Boards Location ......ccccccscsscscssscscssstessserseeseteeees 15
§-2. IC Pin Function
* 10501 Graphic Control (ASD042) uo... eesesecsteeeseeeeeee 16
5-3. Block Diagrams
#TUREl SOCOM svsnzsacaiaransivndoian sues av ve tadivorsescalad cast cosasetvees 17
# PECK SECON se:.edssousacdsandosasni/sa sowed saasaasthiaies nance vances 19
8D: SQCHOM: is ccceeschivesurscctaiveveeadsies scp becsaacostedavaiadiescevevvedeass 21
© Main Section ......cccccccesscsessssesssssssesssesees restate tetel case ates 23
5-4. IC Block Diagrams — CD Section — ou... ceeeseesseeeees 25
5-5. Printed Wiring Board — CD Section — ues 27
5-6. Schematic Diagram — CD Section — ....... eee eens 29
5-7. Printed Wiring Board — Main Section — ....... eee 32
5-8. Schematic Diagram — Main Section — oo... eee 35
5-9. Schematic Diagram — Deck Section — uo... eens 39
5-10. Schematic Diagram — Tuner Section —........eeeceeee 43
5-11. Printed Wiring Board — Tuner Section — .....ccseeeeees 46
5-12. Schematic Diagram — CD Motor Section — ............... 47
5-13. Printed Wiring Board — CD Motor Section — ......:........ 47
5-14. Schematic Diagram —- Panel Section —.......... eee 49
5-15. Printed Wiring Board — Panel Section —.......... cesses 51
5-16. IC Pin Function
¢ 1C701 Master Control (TMP87CS64) ....... cc eceeeeeeseees 54
SECTION 6. EXPLODED VIEWS
6-1. Case and Back Panel Section ..........ccccsccssssesestecceseeees 57
6-2. Panel Board Section... eee seesseeeeesseceeesessesneeseeeeees 58
6-3. Front Panel S@ction ........ cccssssssssrsreesceceesescessseeseneaes 59
6-4. Chassis SECTION ........... cic ccsesssssessceceeseseeceeceeceucensensenseseeeas 60
6-5. TC Mechanism Section 1 (TCM-YSW47C24) 00... cee 61
6-6. TC Mechanism Section 2 (TCM-YSW47C24) uu... 62
6-7. TC Mechanism Section 3 (TCM-YSW47C24) ............08 63
6-8. CD Mechanism Section (CDM37-5BD19)............::ccee 64
6-9. Base Unit Section (BU-5BD19) oe ccsssteeeeeesees 65
SECTION 7. ELECTRICAL PARTS LIST... 66

2a eee
Index to Parts and
Controls
Refer to the pages indicated in parentheses
for details on how to use the controls.Front
Panel
Tuner section
Refer to the pages indicated in parentheses
for details on how to use the controls.
SLEEP button (18)
SYSTEM POWER switch (7)
Remote sensor
[4] Display window (23)
CURSOR CONTROL buttons (6, 17, 19)
[6] TUNING +/~ buttons (11)
TUNER MEMORY button (12)
STEREO/MONO button (11)
{9] TUNING MODE button (11)
ENTER/NEXT button (6, 12, 19)
DISPLAY /DEMO button (6, 8)
{i2] TUNER/BAND button (11)
DAILY 2 button (18)
DAILY 1 button (18)
[5] TIMER SET button (19)
CLOCK SET button (6)
Amplifier section
(1) EFFECT button/indicator (16)
{2} FILE 1 — 5 buttons/indicators (16)
(3] FILE SELECT button/indicators (16, 17)
[4] VOLUME control (7, 16, 19)
[5] DBFB button (16)
{6} SSSURROUND button (16)
{7] EQ MEMORY button (17)
{8} FUNCTION button (7, 14)
[9] PHONES jack (16)
Tape player section
[1] Cassette compartments (13)
[2] DOLBY NR button (13)
[3] Tape operating buttons
C (play) (13)
> (fast rightward) (13)
<1 (fast leftward) (13)
0/& (stop/eject) (13)
O (recording) (for deck B only) (13)
00 (pause) (13)
SECTION 1
GENERAL
CD player section
CONTINUE button (7)
SHUFFLE button (8)
(3) PROGRAM button (9)
[4] REPEAT button (9)
(5) AUTO button /indicator (7)
{6} Front cover (7)
& OPEN button (7)
- (8) 00 (pause) button (7)
{9} t> (play) button (7)
fi) C (stop) button (7)
{1] AMS #<1/>4 buttons (7, 15)
DISC SKIP button (7)
{13} DISC 1 - 5 buttons (7)
Rear Panel
AM terminal (4)
[2] FM 752 terminal (4)
{4} VIDEO (AUDIO) IN jacks (19)
(5) SPEAKER connectors (4)
(6) +: ground terminal (4)
[7] AC power cord (5)
This section is extracted
from instruction manual.
SURROUND indication (16)
TIMER mode indications (18)
(3) Tuner indication (11)
[4] DOLBY NR B indication (13)
AUTO/MANUAL/PRESET indications
(12)
(6) REC indication (14)
Band/disc/track/sound frequency
range indications (11)
Disc calendar/playing position
indicator (7)
[9] DBFB indication (16)
Music calendar (7)
(11) VOLUME indication (16, 19)
(13 Radio frequency/playing time/sound
frequency level indications (7, 11, 17)
(3) CD play mode indicators (7)
Remote
SLEEP button (18)
{2] LOOP button (10)
[3] cD & (play) button (7)
[4] TUNER/BAND © button (11)
(5) ce /t33 buttons (7, 12, 15)
[6] CHECK button (9)
FUNCTION button (7, 14)
MUSIC MENU buttons (16)
[9] POWER button (7)
@ (pause) button (7)
QO (stop) button (7)
<1 /& buttons
(f3 EDIT button (14)
DISC SKIP button (7)
CLEAR button (9)
VOL (volume) +/~ buttons (7, 16, 19)

SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. FRONT PANEL ASSY AND MAIN BOARD
@ Remove the connectors.
*
Main
board
(nine
pieces)
Transformer
board
*
Transformer
board
(one
piece)
TCB
board
*
TCB
board
(one
piece)
©
Screw
(BVTT3X6)
©
Tapping
screw
CN1601
© Earth wier
@ Screw
(BVTP3X8)
© Two screws
(BVTP3X8)
@ Main board
© Front panel assy
) © Two screws
(BVTP3X8)
O Five screws
(BVTP3xX8)
2-2. TC MECHANISM DECK
© Two screws
(BVTP2.6X8)
©
TC
mechanism
deck
-@
Two
screws
(BVTP2.6X8)
© Two screws
J (BVTP2.6X8)
@ Two cassette lids

2-3. CD MECHANISM DECK
@ Screw (BVTP3X8)
© Two screws
(BVTP3X8) © Two screws
(BVTP3xX8)
© CD mechanism deck .
2-4. BU BRACKET ASSY
@ BU BRACKET ASSY
@ Yoke bracket

2-5. DISC TABLE
© Step screw
@ Screw (BVTP3X8)
© Screw (BVTP3X8)
©
Bracket
(BU)
:
©
Bracket
(BU)
A r
,
AEG
f-
|
/
?
Se
oe
AK
; NS
SS
>?
@
Disc
table
Se
a
;

SECTION 3
MECHANICAL ADJUSTMENTS
PRECAUTION
1. Clean the following parts with a denatured alcohol-
moistened swab :. -
record/playback heads pinch rollers
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head
demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to
the parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Mesurement
FWD ;
FF/REW CQ-201B 55 to 130g cm
[tere [torus meter | _ i oa
SECTION 4
ELECTRICAL ADJUSTMENTS
DECK SECTION | | 0 dB=0.775V
1. Demagnetize the record/playback head with a head
damagnetizer. (Do not bring the head demagnetizer close to
the erase head.)
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to
the parts adjusted.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in
this service manual. (As a general rule, playback circuit
adjustment should be completed before performing
recording circuit adjustment.)
6. The adjustments should be performed for both L-CH and
R-ch.
7. Switches and controls should be set as follows unless
otherwise specified.
8 [Sat
ean [ie 0a | Asma Ade
[saa | sic0am ae a sen
ee
Record/Playback Head Azimuth Adjustment
Note : Perform this adjustments for both decks.
Procedure :
1. Mode : Playback
paety main board
(10kHz, -10dB) Pin @ (L-CH) level meter
Pin @ (R-CH)
main board
CN307
Pin @ (GND)

2. Turn the adjustment screw and check output peaks. If the
peaks do not match for L-CH and R-CH, turn the
adjustment screw so that outputs match within 1 dB of
peak.
L-CH
peak
within 1dB
R-CH
screw Peak
position
ete
L-CH RCH“ ~*~ Screw
peak peak position
3. Mode : Playback
test tape
P-4-A100 main board
(10kHz, -10dB) CN307
Pin @(L-CH) - oscilloscope
: Pin @ (GND)
Pin @ (R-CH)
Waveform of oscilloscope
inphase 45° 135" 180" 180°
oii pnese 49
wrong.
good
4, After the adjustments, apply suitable locking compound to -
the parts adjusted.
Adjustment Location :
SPR) Geer
Adjustment screws
REC/PB head (deck B)
or PB head (deck A)
Tape Speed Adjustment
Procedure :
Mode : Playback
test tape
WS-48B
R
(8kHz,
0dB)
frequency
counter
—— set
\
main board
CN307_ Pin @ (L-CH)
Pin @ (R-CH) |
1. Insert the WS-48B to the deck B, and playback.
2. Adjust the RV380 so that the reading of the frequency
counter will become 3000 + 10 Hz.
3. Stop the deck B,:and insert the WS-48B to the deck A,
playback. Be sure to check that the difference of the
frequency compared with the deck B becomes within +2%
and —0.5%. .
4. Insert the CS-123 (blank tape) to the deck A and insert the
WS-48B to the deck B, then playback them simultaneously.
Be sure to check that the reading of the deck B’s frequency
counter becomes 3000 + 50 Hz.
Adjustment Location : main board
Playback Level Adjustment [ DECK A | es
Procedure :
Mode : Playback
test tape
P-4-L300
(315Hz, OdB) level meter
Sn set
\
main board
CN307 Pin @ (L-CH)
Pin ® (R-CH)
Deck A is RV301 (L-CH) and RV401 (R-CH),
Deck B is RV302 (L-CH) and RV402 (R-CH)
so that adjustment within adjustment level as follows.
Adjustment level :
CN307 PB level: 301.5 to 338.3 mV (—8.2 to —7.2 dB)
level difference between the channels: within +0.5 dB
Adjustment Location : main board

Record Bias Current Adjustment | DECK B
Procedure :
1. Mode : record
VIDEO IN
1) 315Hz C
>) 10kHz }51.2mv (-23.6dB)
AF OSC -
‘blank tape
2. Mode : Playback
recorded
portion level meter
—|
main board Pin @ (L-CH)
CN307 Pin @ (R-CH).
Confirm playback the signal recorded in step 1 become
adjustment level as follows.
If these levels do not adjustment level, adjustment the RV304
(L-CH) and Ses (R-CH) on the main board to repeat steps 1
and 2.
Adjustment level: Playback output of 315 Hz to playback
output of 10 kHz : 040.5 dB
Adjustment Location : main board
Record Level Adjustment | DECK B
Procedure :
1. Mode: record
VIDEO IN
315kHz 51.2mvV (-23.6dB)
AF OSC
blank tape
CS-123
ue | se 6002
2. Mode: Playback
recorded
portion level meter
—— set
mainboard Pin @ (L-CH)
CN307 Pin @ (R-CH)
Confirm playback the signal recorded in step 1 become
adjustment level as follows.
If these levels do not adjustment level, adjustment the RV303
(L-CH) and RV403 (R- CH) on the main board to repeat steps 1
and 2.
Adjustment level :
CN307 PB level : 47.3 to 53.1 mV (—24.3 to -23.3 dB)
Adjustment Location :
[MAIN BOARD] (Component Side)
(J CN307
RV303
RV403
RV302
Aav4oi @) 8, 22
RV304 iO}
RV380
©
RV404

TUNER SECTION | | OdB=1u.V
Note : As a front-end (FE1) is difficult to repair if faulty,
replace it with new one.
AM Section Adjustment
loop antenna
Setting
:
:
8
(Supplied
accessories)
loop antenna
AM RF SSG
AM antenna
30%
amplitude
|
60cm
terminal
(TM1)
modulation
by
400
Hz
signal
Field
strength
dB
(uV/m)
=
SSG
output
level
dB
(uV/m)
—-26dB.
AM Tuned Level Adjustment
Band : AM
Procedure
:
;
a
1.
Set
the
output
of
SSG
so
that
the
input
level
of
the
set
Adjustment
Location
:
becomes
55
dBu.
{TCB
BOARD]
(Component
Side)
2. Tune the set to 1,050 kHz.
Ss, Adjust RV42 to the point (moment) when the TUNED
indicator will change from going off to going on.
4,djustment Location : TCB board
FM Section Adjustment
Note : This adjustment should be performed after the AM ~
Tuned Level Adjustment due to the same adjustment
element.
Setting :
FM RF stereo signal
generator
Carrier frequency : 98MHz Z<
Modulation : AUDIO 1kHz, 75kHz FM ANTENNA terminal
deviation (100%) (TM1) (75Q )
* Output level : 25dBu (at 75Q open) :
FM Tuned Level Adjustment
Band : FM
Procedure :
1. Supply a 25dBu 98 MHz signal from the ANTENNA
terminal.
2. Tune the set to 98 MHz.
3. If the TUNED indicator does not light, adjust RV41 to the
point (moment) when the TUNED indicator will change
from going off to going on.
Adjustment Location : TCB board

CD SECTION
Note :
1. CD Block is basically designed to operate without
adjustment. Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise
indicated.
3. Use an oscilloscope with more than 1OMQ impedance.
4. Clean the object lens by an applicator with neutral detergent
when the signal level is low than specified value with the
following checks.
5. Adjust the focus bias adjustment when optical block is
_ replaced.
Focus Bias Adjustment
oscilloscope
(DC range)
BD board
_—_—
TP(RF) O<— 0}
VC O«—0o-
Procedure:
1. Connect oscilloscope to test point TP (RF). (GND terminal
: VC)
2. Turned Power switch on.
3. Put disc (YEDS-18) in and playback.
4. Adjust RV101 so that the waveform is clear.
(Clear RF signal waveform means that the shape “()” can
be clearly distinguished at the center of the waveform.)
5. After adjustment, check the RF signal level.
¢ RF signal
VOLT/DIV : 200 mV
TIME/DIV_ : 500 nS
level
1.3 40.3 Vp-p
S Curve Check
oscilloscope
BD board &
amen
TP(FE) O«——oF
TP(VC) o«—lo-
Procedure :
1. Connect oscilloscope to test point TP (FEO).
2. Connect between test point TP (FOK) and GND by lead
wire.
3. Turn Power switch on.
4. Put disc (YEDS-18) in and turned Power switch on again
and actuate the focus search. (actuate the focus search when
disc table is moving in and out.)
5. Check the oscilloscope waveform (S-curve) is symmetrical
between A and B. And confirm peak to peak level within
3.8+1.1 Vp-p.
S-curve waveform
symmetry.
within 2.4 + 0.7 Vp-p
°6. After check, remove the lead wire connected in step 2. .
Note : « Try to measure several times to make sure than the
ratio of A: B or B: A is more than 10: 7.
* Take sweep time as long as possible and light up the.
brightness to obtain best waveform.
RF Level Check
oscilloscope
BD board
mum
TP(RF) O«—oF
TP(VC) o«—to-
Procedure : ,
1. Connect oscilloscope to test point TP (RF) on BD board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in and playback.
4. Confirm that oscilloscope waveform is clear and check RF
signal level is correct or not.
Note :
Clear RF signal waveform means that the shape “()” can be
clearly distinguished at the center of the waveform.
VOLT/DIV : 200mV
TIME/DIV : 500nS
RF
signal
waveform
AX
RET
YXY
XXX]
(XXV
XX)
level:
1.3
+
0.3
Vp-p
OX AXKAAAK ANAK)
OX AAA)
Vi
DANNY
NUNN
S43

E-F Balance Check Adjustment Location :
oscilloscope
BD board [ BD BOARD ] (Conductor Side)
ee,
TP(FEO) O<«—0F
TP(VC) o«—lo-
Procedure :
1. Connect test point TP (ADJ) on Main board to GND with a
lead wire.
2. Connect oscilloscpe to test point TP (TEO). RV103
3. Turned Power switch on. ° TEO FEO
4. Put disc (YEDS-18) in and playback. @)
5. Confirm that the oscilloscope waveform is symmetrical on ane
the top and bottom in relation to 0Vdc, and check this yo RV102
level.
Traverse waveform
HANTS
LULU
symmetry
level : 300 + 100 mVp-p
6. Remove the lead wire connected in step 1.
Focus/Tracking Gain Adjustment (RV102, RV103)
[ MAIN BOARD ] (Conductor Side) —
This gain has a margin, so even if it is slightly off.
There is no problem.
Therfore, do not perform this adjustment. .
Please note that it should be fixed to mechanical center position
when you moved and do not know original position.

SECTION 5
DIAGRAMS
5-1. CIRCUIT BOARDS LOCATION
TRANSFORMER board
PANEL board
Ek ae TCB board
H.P. board ‘
CD-L PANEL board S
MAIN board
CD-LED board
DOOR SW board
CD-R PANEL board
TABLE SENSOR board
BD board
CD MOTOR board
LED board

5-2. IC PIN FUNCTION (IC501)
¢ 1C501 GRAPHIC CONTROL (ASD042)
Ec A
aor eno eel
Oe eg es
REO. ON
cLKMG ST (Se
DATAGH let
paTAMG | Seis
= Dae a
PANEL 5 a oe
ed oe
KEY INI-4 | 1 | Key matrix input. |
AVpD | | ;
AVREF —} ae ,
Vss GND 2
12
13
14
15
16
17
20
21-24
25-28
29
30
31
Q
<
B
Ww NS
W
Ww
} X’tal (S MHz).
ely
eee
Reale
eos
0 | LEDGrivesignal output,
LO NO acer ee
0 | ted aves —SSSCSCS~—~—CSCSCSC“C~‘“~s~*S
44. | VOLINA ae ae Volume encoder signal input.
46__| RDYMG 1 [ROY signaltommaserenot ——SSCCSCSCSCSC~C~S~S~*S
es
ee
Bom
oe
ed
ae
eer
ze
| oO
Ww
>
x
—
w Hr
Pad
N
LEDS5-8
LED3, 4
LED1, 2
36-39
40, 41
42, 43
47 SIRCS IN SIRCS signal input. ;
aoe
49, 50 LEDS12, 13
31 LEDS11
VpD
Not used. (Pull up)
LED drive signal output.
iw nN
53~70
71
' 72-75
76-80
SEG5S-22
V.LOAD »
SEG1-4
GR8-12 ;
FL segment signal output. .
~25V for FL |
FL segment signal output. :
FL grid signal output. ,
e Abbreviation
FL : FLUORESCENT INDICATOR TUBE

HCD-D170/G1100
5-3. BLOCK DIAGRAMS
— TUNER SECTION —
ST +10V
s
Q5
, FE1
FM FRONT END
ae
=
ANT
IN
iF
OUT
aay
|
©
:
C)
‘
@0 GQAMP INL LOGE
FM 75Q =
wr |S
AM
FM/AM
MPX
IC2
RCH
FE2
AM FRONT END
*R CH: Same as L CH
LCH
*SIGNAL PATH
STEREO c>:FM
TUNED map : AM
X41
450kHz
456kHz
(A)
| *MUTE MAIN
SECTION
(Page 23)
ST-CE
COM-DIN
COM-CLK
- COM-DATA

HCD-D170/G1100
eee
ck
a
DECK
A
DECK
B
—
DECK
SECTION
—
S3
S6
TYPE2 TYPE 2
<< >
NR ON/OFF
L—>
HP901 7
PB HEAD RCH
(DECK A) R —>
? HEAD AMP
IC303
Lam 4g = RV303
HRP9071 , S
REC/PB HEAD REC LEVEL
~ (DECK B) age Src b
(8)
BIAS BIAS ON/OFF,
A+7.5V te
RV304
lee
354
RECORD
|
BIAS
|
wily
:
|
REC
BIAS
ERASE
BIAS
BIAS
OSC
Basie
T350,Q351,
352
ERASEHEADX
§&
|
Q380
TAPE
SPEED
M901
H
POWER ON/OFF
SWITCH
Q381, 382
REEL C) teeeeen emerge ace
‘CAPSTAN : 380
: ag +MTR 4
—MTR
—MTR
$1 O
DECK A
| $2 O
(PLAY) me
) ae
DECK B S5
(REC)
09
hy a ar
Oo
=
i
D452, 453 Ld
as
er
rn
re
Sf el
AB
DOLBY ON/OFF
PAS/DOL
oo PBL
Q450
Q301 O et
MUTE -o |---—- LM ON/OFF
REC/PB
REC L
BIAS ON/OFF
RM ON/OFF
RELAY REC/PB
* SIGNAL PATH |
>> :PB (DECK A) MAIN
[> _ :PB (DECK B) SECTION
[>> :REC (DECK B) (Page 23)
POWER ON/OFF
O
Q451
A STOP/PLAY
B STOP/PLAY
B REC

HCD-D170/G1100
T. SENS
S201
On ee
UP wo UP SW
SW
FOCUS/TRACKING
COIL DRIVE
(C102 (1/2)
. (2) FOCUS
7] COIL DRIVE
' ore]
sas is sea a (Saka cae Sesh eS i s' m oDb/MeSASeasas sna asm (nea nds Sta Se agree et t :
~— CD SECTION —
Af} 101
OPTICAL
PICK-UP
BLOCK
F
recent
paetes
cosas
ngnmeede
san
neasiineeauiaatays
FOCUS/TRACKING
SERVO.
'
EFM
COMPARATOR
DIGITAL
FILTER
1C104
(1/2
D/A
CONVERTER
'
1C104
VO
ee
se
oe
ere
ee
ee
eine.
‘
:
:
-
SIGNAL
PATH
H
O
oa
e
(6p
L-CH
BM:
CD
ree
DIGITAL
SIGNAL
PROCESSOR,
A
‘
CLV
SERVO
cic
i
LCoS
4B
!
H
1
'
:
f]
1
t
1
ae ae ee ee ee, ;
H
H
CD
CLK
t
1
'
'
'
CD
DATA
RV103
TRACKING
GAIN
DF
LAT
SCOR
TE oteleintedad phaletetetatated tetetateted ' 4
ri
|
[LD
DRIVE
;
=
SQ
DATA
ii
@®
y—
Q101,
102
e9
om
SQ
CLK
to
1
'
ame
SENS
{tenn
em
So
eo
eee
:
,
FOCUS
SW
1
LASER
34
Q103
FOCUS
SW
'
DIODE
|
(c)
y
t
‘
i)
@5)
MAIN
H
'
aes
SECTION
tees
es
:
aPet
(Page
23)
1
1
i]
‘
5
Focus
TRACKING
|
@
one
COIL
CQIL
es
'
O
(18)
TRACKING
7.
COIL
DRIVE
G9
4
4
%
!
t
t
t
t
t
1
i]
t
i]
J
t
SLED/SPINDLE SLED
MOTOR DRIVE SERVO
1C102 (2/2 1C101 (2/2
MOTOR DRIVER
1C201
M102 26
SLED MOTOR (M) 27
SLED MOTOR
DRIVE @5)
r
mee
eee
a=
22
>=
M101 1 SPINDLE MOTOR
SPINDLE (M) 5 DRIVE (4)
MOTOR
oo

HCD-D170/G1100
— MAIN SECTION —
J801
VIDEO
Nn 16
PBL
REC L
POWER ON/OFF
RELAY REC/PB
; A/B
BIAS ON/OFF
DECK RM ON/OFF
SECTION DOLBY ON/OFF
REC/PB
(Page 20) PASS/DOL
LM ON/OFF
A STOP /PLAY
B STOP /PLAY
B STOP /REC
STL
COM DIN
COM CLK
® COM DATA
STEREO
TUNER TUNED
SECTION STCE
(Page 18) MUTE
LCH’-
UP. SW
TBL.L
TBL.R
SCOR
T. SENS
DF LAT °
© SENS
cD X RST
SECTION CD CLK
CD DATA
(Page 22)| gous sw
SQ-CLK
SQ DATA
X LAT
‘J *
‘ ’
Y
(DISC ny
INPUT SELECT
Ic802
.
POWER
AMP
161201
RY1201
RELAY
DRIVE
Q1202,1203
OVER LOAD
DET
Q1201
EQUALIZER / VOLUME
IC901
PROTECTOR
1C1202
HP / SP
SWITCHING
Q1207
PROTECTOR
SWITCH
Q1205
; | cesoninesned
Pe Le
= he
aban a gale aa, UT
63 REC MUTE - Ww
NR OFF
PB
PASS AMP/DOLBY
LINE MU IN
180 A PLAY
180 B PLAY
180 B REC
LED
SWITCH
Q513 Qs01
+5V SWITCH
O : +5V
LED
SWITCH J——et- —--———— —— Qs02
Q504-514 43V SWITCH
©
508,514
y COM DATA
nese:
COM CLK
eas COM DIN LED
@3 STEREO LED SELECT
|
eS
TUNED
0503,521
J
pe
+7V
REG
} ST MUTE ON
GRAPHIC CONTROL
eet SIRCS IN @?
+7V REG
cD +7V 11002
MASTER CONTROL
G3} BDUPECD)
iC701
Tee
Bint
D1003
6)
TaLR
VOLUME
+5.6V
ae
@5)
SCOR
bal
VOL INA @4) ROTARY
65)
DF
LAT
—7V
REG
;
+5V
—7.5V
63)
SENS
;
101004
e
XAST
+5.6V
3
XOUT
34
2
G8)
CD
CLK
:
ae
x7o1
xs01
|
MATRIX
eae
TOV
REG]
ac
@Q
CD
DATA
XIN
@)
YOMHz
5MHz
63)
D
+5V
ST
410V
RECT
@3)
Focus
SW
pacts
SQ
CLK
;
01013,
1014
SQ
DATA
D+5V
5V
REG
—25V
REG|
XOUT
a
a
X
LAT
(CD)
PANEL
sw
(8)
O
cae
D45V LIDDED LED
§3 - 70:72 - 75 1- 7-76-80
neers
FL501 VE
FLUORESCENT
INDICATOR
TUBE
a 3 :
VF
9 Q201
25193
—
24
—
=
* Reh : Same as Loh
CLLL
TRANSFORMER
i—a
§0000000000080
60