Sony MDX-C5970, MDX-C5970R User Manual
MDX-C5960R/C5970/C5970R
SERVICE MANUAL
Photo: MDX-C5960R
SPECIFICATIONS
German Model
MDX-C5960R
US Model
Canadian Model
E Model
MDX-C5970
AEP Model
UK Model
MDX-C5970R
Model Name Using Similar Mechanism MDX-C7900/C7900R
Base Mechanism Type MG-164N-138
Optical Pick-Up Name KMS-241B/J1NP
MICROFILM
– Continued on next page –
FM/AM (MW/LW) MINIDISC PLAYER
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
Never look into the laser diode emission from right avove when
checking it for adustment. It is feared that you will lose your sight.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
(KMS-241B/J1NP).
The laser diode in the optical pick-up block may suffer electrostatic break-down easily. When handling it, perform soldering
bridge to the laser-tap on the flexible board. Also perform m easures
against electrostatic break-down suff iciently before the operation.
The flexible board is easily damaged and should be handled with
care.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED
LINE WITH MARK ! ON THE SCHEMATIC DIA GRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE !
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
laser-tap
OPTICAL PICK-UP FLEXIBLE BOARD
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 of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
– 2 –
TABLE OF CONTENTS
1. GENERAL
Location of controls ........................................................ 4
Resetting the unit ............................................................ 5
Detaching the front panel................................................ 5
Labelling the rotary commander..................................... 5
Using the rotary commander .......................................... 5
Adjusting the sound characterisitics............................... 5
Attenuating the sound ..................................................... 5
Changing the sound and display settings ....................... 5
Boosting the bass sound.................................................. 5
Installation....................................................................... 6
Connections..................................................................... 7
2. DISASSEMBLY ......................................................... 10
3. ELECTRICAL ADJUSTMENTS......................... 16
Test Mode........................................................................ 16
MD Section ..................................................................... 16
Tuner Section .................................................................. 16
4. DIAGRAMS
4-1. Block Diagram – SERVO Section – ............................... 19
4-2. Block Diagram – TUNER Section – .............................. 21
4-3. Block Diagram – MAIN Section – ................................. 23
4-4. Block Diagram
– DISPLAY/KEY CONTROL Section –........................ 25
4-5. Block Diagram – BUS CONTROL/
POWER SUPPLY Section – ........................................... 27
4-6. Notes for Printed Wiring Boards and
Schematic Diagrams ....................................................... 29
4-7. Printed Wiring Board – SERVO Board – ....................... 31
4-8. Schematic Diagram – SERVO Board (1/3) – ................. 33
4-9. Schematic Diagram – SERVO Board (2/3) – ................. 35
4-10. Schematic Diagram – SERVO Board (3/3) – ................. 37
4-11. Printed Wiring Board
– MAIN Board (Component Side) – .............................. 39
4-12. Printed Wiring Board
– MAIN Board (Conductor Side) – ................................ 41
4-13. Schematic Diagram – MAIN Board (1/4) – ................... 43
4-14. Schematic Diagram – MAIN Board (2/4) – ................... 45
4-15. Schematic Diagram – MAIN Board (3/4) – ................... 47
4-16. Schematic Diagram – MAIN Board (4/4) – ................... 49
4-17. Printed Wiring Board – KEY Board –............................ 51
4-18. Schematic Diagram – KEY Board – .............................. 53
4-19. IC Pin Function Description ........................................... 62
5. EXPLODED VIEWS................................................ 72
6. ELECTRICAL PARTS LIST ............................... 76
– 3 –
SECTION 1
GENERAL
This section is extracted from
instruction manual.
– 4 –
– 5 –
– 6 –
– 7 –
– 8 –
– 9 –
SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
SUB PANEL
2
sub panel
1
five screws
(PTT2.6
×
6)
MECHANISM DECK (MG-164N-138)
3
mechanism deck
(MG-164N-138)
2
connector
(CN200)
1
screw
(PTT2.6
1
two screws
(PTT2.6
×
6)
×
4)
– 10 –
MAIN BOARD, HEAT SINK
d
2
three screws
(PTT2.6
3
main board
4
insulating sheet
×
6) (ground point)
5
eight screws
(PTT2.6
6
×
10)
1
two screws
(PTT2.6
heat sink
×
10)
SERVO BOARD
1
2
two screws
(BVTT2
×
4)
sensor flexible board
(CN102)
2
two screws
(BVTT2
×
4)
3
servo board
1
flexible boar
(CN103)
– 11 –
)
MD COVER ASS’Y
3
MD cover ass’y
shaft (MD cover guide)
cassette holder
1
four screws
(B2 × 3)
FLOAT BLOCK
float block
A
2
Pushing the Cassette Holder toward the direction A with a
screwdriver, etc., disengage the Shaft (MD Cover Guide) from
the slot in the MD Cover Assy.
Note:Take care not to scratch the optiocal Pick-up when pushing
the Cassette Holder with a screwdriver. etc.
3
Pushing an arrow A part, raise the float block
up ward at the front to release a lock.
1
A
tension spring (FL2)
lever (lock R)
lever (lock L)
2
two tension springs (FLOAT F)
– 12 –
1
tension spring (FL2
LO MOTOR ASS’Y (LOADING) (M903)
4
Remove the bracket (LO)
in the direction of the arrow
A
.
1
Remove solders of motor (M903)
A
5
LO motor ass’y (loading)
(M903)
2
tension spring (rack)
3
claw
LEVER (LE) ASS’Y
2
stopper washer
1
3
roller (GLE)
2
lever (LE) ass’y
– 13 –
HOLDER ASS’Y
2
type-E stopring 1.5
3
2
type-E stopring 1.5
1
spring (CHKG)
lever (lock R)
3
lever (lock L)
4
Remove the holder ass’y in the
direction of the arrow.
2
2
type-E stopring 1.5
1
type-E stopring 1.5
spring (CHKG)
CHUCKING ARM ASS’Y
holder ass’y
1
Remove the chucking arm ass’y
in the direction of the arrow.
– 14 –
OPTICAL PICK-UP (KMS-241B/J1NP)
y
4
screw
(P1.7 × 1.8)
5
bracket (SL)
9
two screws
(P1.7 × 1.8)
!º
retainer (SP)
!¡
SP motor ass’y
(spindle) (M901)
7
screw
(B2 × 3)
2
two screws
(2 × 8)
3
sensor board
1
Remove solders of motors
(M901, M902)
8
base (SL)
6
SL motor ass’y
(sled) (M902)
7
optical pick-up
(KMS-241B/J1NP)
1
two screws
(K2 × 3)
2
shaft (SL2)
4
screw
(B2 × 3)
6
bearing (SL)
5
feed screw ass’
3
screw
(K2 × 3)
SL MOTOR ASS’Y (SLED) (M902), SP MOTOR ASS’Y (SPINDLE) (M901)
– 15 –
SECTION 3
ELECTRICAL ADJUSTMENTS
TEST MODE
This set have the test mode function. In the test mode, FM Auto
Scan/Stop Level and AM (MW) Auto Scan/Stop Lev el adjustments
can be performed easier than it in ordinary procedure.
<Set the Test Mode>
1. Turn ON the regulated po wer supply. (The clock is displayed)
Note: Press the [OFF] button, if the clock is not displayed.
2. Push the preset [4] button.
3. Push the preset [5] button.
4. Press the preset [1] button for more than two seconds.
5. Then the display indicates all lights, the test mode is set.
<Release the Test mode>
1. Push the [OFF] button.
See the adjustment location from on page 18 for the adjustment.
MD SECTION
MD section adjustments are done automatically in this set.
TUNER SECTION
Cautions during repair
When the tuner unit is defective, replace it by a new one because its internal block is difficult to repair.
Note:
Adjust the tuner section in the sequence shown below.
1. FM Auto Scan/Stop Level Adjustment.
2. FM Stereo Separation Adjustmnet.
3. AM (MW) Auto Scan/Stop Level Adjustment.
4. RDS S-Meter Adjustment. (MDX-C5960R/5970R)
FM Auto Scan/Stop Level Adjustment
Setting:
[SOURCE] button: FM
FREQUENCY SELECT switch: FM 200 k (E model)
0 dB=1 µV
3. Adjust with the volume R V2 on TU1 so that the “FM” indication turns to “FM0” indication on the display window.
But, in case of already indicated “FM0”, turn the RV2 so that
put out light “0” indication and adjustment.
Display
SHUF
*1
*1: MDX-C5960R/C5970R indicate “98.00”.
Adjustment Location: See page 18.
FM Stereo Separation Adjustment
Setting:
[SOURCE] button: FM
FREQUENCY SELECT switch: FM 200 k (E model)
FM RF signal
generator
Carrier frequency 97.9 MHz 98.0 MHz
Output level 60 dB (1 mV) 70 dB (3.2 mV)
Mode stereo stereo
Modulation sub
antenna jack (J1)
0.01 µF
set
LINE OUT jack (CNP300)
MDX-C5970
main
19 kHz 7.5 kHz 7.5 kHz
pilot deviation (10%) deviation (10%)
1 kHz, 33.75 kHz 1 kHz, 16.25 kHz
deviation (45%) deviation (21.7%)
1 kHz, 33.75 kHz 1 kHz, 16.25 kHz
deviation (45%) deviation (21.7%)
10 k
level meter
Ω
+
–
MDX-C5960R/
C5970R
FM RF signal
generator
Carrier frequency: 97.9 MHz (MDX-C5970)
Output level : 22 dB (12.6
Mode : mono
Modulation : 1 kHz, 22.5 kHz deviation (30%)
98.0 MHz (MDX-C5960R/C5970R)
antenna jack (J1)
0.01 µF
µ
V)
Procedure:
1. Set to the test mode.
2. Push the [SOURCE] button and set to FM.
Display
SHUF
*1
set
Procedure:
FM Stereo
signal generator
output channel
L-CH L-CH A
R-CH L-CH Adjust RV4 on TU1
R-CH R-CH C
L-CH R-CH Adjust RV4 on TU1
Level meter Level meter
connection reading (dB)
for minimum reading.
for minimum reading.
L-CH Stereo separation: A-B
R-CH Stereo separation: C-D
The separations of both channels should be equal.
Specification: Separation more than 30 dB
Adjustment Location: See page 18.
B
D
– 16 –
AM (MW) Auto Scan/Stop Level Adjustment
t
Setting:
[MODE] button (MDX-C5970): AM
[MODE] button (MDX-C5960R/C5970R): MW
FREQUENCY SELECT switch: AM 10 k (E model)
15 pF
30
Ω
65 pF
AM RF signal
generator
AM dummy antenna
(50 Ω)
antenna jack (J1)
Carrier frequency: 1000 kHz (MDX-C5970)
30% amplitude
modulation by
1 kHz signal
Output level : 33 dB (44.7
999 kHz (MDX-C5960R/5970R)
µ
V)
set
Procedure:
1. Set to the test mode. (See page 16)
2. Push the [SOURCE] button and set to FM.
3. Push the [MODE] button and set to AM (MDX-C5970) or MW
(MDX-C5960R/C5970R).
RDS S-Meter Adjustment (MDX-C5960R/C5970R)
Setting:
[SOURCE] button: FM
FM RF signal
generator
Carrier frequency: 98.0 MHz
Output level : 35 dB (56.2
Mode : mono
Modulation : no modulation
antenna jack (J1)
0.01 µF
µ
set
V)
Procedure:
1. Set to the test mode. (See page 16)
2. Push the [SOURCE] button and set to FM.
Display
SHUF
3. Push the preset [10] button.
4. Adjust RV1 on MAIN board so that the display indication is
“11.2”.
Display
Adjustment Location:
– SET UPPER VIEW –
RV1 RDS S-Meter Adjustment
(MDX-C5960R/C5970R)
TU1
RV1 AM (MW) Auto Scan/Stop Level Adjustmen
RV2 FM Auto Scan/Stop Level Adjustment
RV4 FM Sereo Separation Adjustment
Display
*2
*3
TP
*4
SHUF
4. Adjust with the volume RV1 on TU1 so that the “ AM” or “MW”
indication turns to “AM0” or “MW0” indication on the display window.
But, in case of already indicated “AM0” or “MW0”, turn the
RV1 so that put out light “0” indication and adjustment.
Display
*2
*3
TP
*4
SHUF
*2: MDX-C5960R/C5970R indicate “MW”.
*3: MDX-C5960R/C5970R indicate “999”.
*4: Only MDX-C5960R/C5970R indicate.
Adjustment Location: See page 18.
SHUF
Specification: Display indication : 10.8 to 11.6
Adjustment Location: See page 18.
– 17 – – 18 –
MDX-C5960R/C5970/C5970R
4-1. BLOCK DIAGRAM – SERVO Section –
SECTION 4
DIAGRAMS
100
EFMO
15
TX
IC301 (1/2)
ADDT
• SIGNAL PATH
23
: MD PLAY
FILI
59
PCO
58
61
FILTER
60
RF AMP,
FOCUS/TRACKING ERROR AMP
48 47
MORFI
MORFO
IC303
I
1
RF AMP
J
2
A
4
B
5
I-V
C
AMP
6
D
7
E
8
I-V
F
AMP
9
APC
PD
IN4R
IN4F
IN2F
IN2R
IN1F
IN1R
IN3F
IN3R
LD/PD
16PSB
3
4
29
30
19
18
14
15
11
10
AMP
SPFD
SPRD
RFO
B.P.F.
AT
AMP
12
46
3T
APCREF
IC306
WBL
B.P.F.
ABCD
AMP
WBL3TEQ
V-I
CONVERTER
F0CNT
20
APCREF
83
SFDR
92
SRDR
91
FFDR
88
FRDR
89
TFDR
86
TRDR
85
TEMP
ADFM
29 30
FOCUS
ERROR AMP
TRACKING
ERROR AMP
+3.3V
PWM GENERATOR
40
I
J
F
C B
I J
D A
E
DETECTOR
LASER DIODE
OPTICAL PICK-UP
(KMS-241B/J1NP)
2-AXIS
DEVICE
(FOCUS)
(TRACKING)
05
LDPD
ILCC
PD
M901
(SPINDLE)
M902
(SLED)
FCS+
FCS–
TRK+
TRK–
B
A
C
D
E
F
AUTOMATIC
POWER
CONTROL
Q302
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
OUT4F
6
M
8
OUT4R
OUT2F
27
M
25
OUT2R
OUT1F
21
23
OUT1R
OUT3F
12
10
OUT3R
IC302
AGCI
RF AGC
& EQ
EQ
PEAK &
BOTTOM
ADIN
COMMAND
SERIAL/
PARALLEL
CONVERTER,
DECODER
SCLK
SWDT
1716 18
PEAK HOLD
Q301
+3.3V
13
RECP
AUTOMATIC
POWER
CONTROL
DIGITAL
SERVO
SIGNAL
PROCESS
DIGITAL SERVO
SIGNAL PROCESSOR
IC301 (2/2)
WBL
XLAT
RF
AUX
PEAK
BOTM
ADFG
ABCD
FE
TE
SE
ABCD
AUX1
38
33
37
36
32
35
34
26
28
7465647566 63
FE
TE
AUX2
ABCD
ANALOG MUX
A/D CONVERTER
FROM CPU
INTERFACE
AUTO
SEQUENCER
73 62
SE
PEAK
XLRF
CKRF
DTRF
51
52
55
78
79
BOTM
CLTV
FILO
ASYO
ASYI
COMPA-
RFI
RATOR
ADFG
DEMODULATOR/
DECODER
F0CNT
10MHz
80
81
82
ADIP
X501
PLL
EFM/ACIRC
ENCODER/DECODER
SUBCODE
PROCESSOR
SPINDLE
SERVO
SPFD
SPRD
DQSY11SQSY14XINT
XRST
94 93
10
12
59 62 55 54 52 45 51 64 26 27 28 29
MD-RST
31
EXTAL
XTAL
32
7 6
LOADING
MOTOR DRIVE
IC305
M903
(LOADING)
5 4
RIN FIN
OUT1 OUT2
1 7
SHOCK PROOF
MEMORY CONTROLLER
51331
LEVEL SHIFT
IC502
61242
SQSY
CC-XINT
EJECT
LOAD
M
ATRAC
CPU
INTERFACE
SENS
SRDT
SWDT
9 8 5 6 7
SWDT
SENS
MD-SI
MD-SO
MD MECHANISM CONTROLLER
ON:When the disc loading start
and the disc eject completion.
SAMPLING
RATE
CONVERTER
DIGITAL
AUDIO
ENCODER/DECODER
INTERFACE
D-RAM
INTERNAL BUS
MONITOR
CONTROL
SCLK
XLAT
MNT0
1 2 3 4
13
LEVEL SHIFT
IC503
12
FOK
SCLK
XLAT
MNT0
MD-LAT
MD-CKO
IC501 (1/2)
C-SW
63
LOADING START/
EJECT END
DIN
DOUT
DADT
MNT1
MNT2
MNT3
135
246
SHOCK
XBUSY
SLOCK
MNT1
MNT2
MNT3
ON:When completion of
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER, 2M BIT D-RAM
21
22
24
LOADING
END
the disc loading.
IC301 (1/2)
BCK
LRCK
FS256
2526 27
XBCK
LRCK
FS256
CLOCK
GENERATOR
RESET
TH501
39
TEMP
E-SW
11 56
OSCI
OSCO
XOE
XWE
XRAS
XCAS
EMPHASIS
66
DEEMP
(LIMIT)
ON:When the optical pick-up is
inner position.
A-MUTE
16
17
D0 – D3A00 – A09
47, 46, 48, 49
32 – 29, 34 – 38, 43
41 22
45 3
44 4
42 23
LOCK
21
67
LIMIT-IN
DADT, BCK, LRCK, FS256
512FS OSC
IC304
D0 – D3
1, 2, 24, 25
A0 – A9
9 – 12, 14 – 18, 5
OE
WE
RAS
CAS
D-RAM
IC307
RESET, EMPHASIS
LOCK
MD-ATT
(Page 23)
A
X301
22.5792MHz
(Page 23)
B
C
(Page 23)
D
(Page 23)
– 19 – – 20 –
4-2. BLOCK DIAGRAM – TUNER Section –
FM/AM TUNER UNIT
2
1
FM-ANT
AM-ANT
TU1
LO/DX
4
FILTER
5 283
2
1
SEEK
LP HC
LP FM
SSTOP
16
LP AM
FM/AM PLL
IC100
SDA
13 12
VT
5
LP OUT
SCL
24
6
VCO
25
FM IN
21
15
AM IN
OSCOUT
FM/AM-IF
14
IF FM
IF AM
OSCIN
J1
(FM/AM ANTENNA)
10
9
AM OSC
13
AM OSC
BUFFER
Q4
X1
10.25MHz
8
FM +B
10
AM +B
MDX-C5960R/C5970/C5970R
FM B+
AM B+
TUNER B+
9
AM
FM
E
F
(Page 23)
(Page 23)
+B
ST/MONO
SD
SEEK
20
11
22
(C5960R/C5970R)
RV1
FM RDS
S-METER
(C5970)
S-METER
19
FM/AM SIGNAL
METER BUFFER
Q1
FM-DET
23
(C5960R/C5970R)
BUFFER
Q50
FM-LCH
FM-RCH
AM-DET
16
20
MPX
LVIN
18
16
12
14
7
VDDA
57 kHz
BAND-PASS
FILTER
MULTI
PATH
DETECTOR
VDDD
R-CH
OUT
B+ SWITCH
SC
18
MPTH
2
Q51
RDS DECODER
IC102
CIN
19
MUTING
Q101
BACKUP +5V
FM B+
CLOCKED
COMPARATOR
OSCILLATOR
& CLOCK
OSCI
OSCO
4
5
R-CH
DEMODULATOR
D5
SIGNAL
QUALITY
DECODER
RDS/RDBS
& DECODER
DAVN
8
MUTING
CONTROL SWITCH
Q103
5
4
INTERFACE
REGISTER
IIC BUS
SLAVE
TRANSCEIVER
SDA
SCL
9
10
(C5970: E model)
S701
FREQUENCY SELECT
MW 10K/FM 200K
MW 9K/FM 50K
05
100
BAND (9K-10K)
69
SSTOP
DATA
CLOCK
83
82
SEEKOUT
81
SD-IN
ST-MONO
MASTER CONTROLLER
IC700 (1/4)
53
S-METER (VSM)
BAND-PASS
FILTER
IC101
51
QUALITY
Q5
NOISE DET
DISCHARGE
SWITCH
35
NS-MASK
52
MPDH (MTP)
X2
4.332MHz
67
DAVN
DATA
CLOCK
62
TU-ATT
DATA, CLOCK
• SIGNAL PATH
(Page 23)
G
: FM
: AM (MW/LW)
– 21 –
– 22 –
MDX-C5960R/C5970/C5970R
4-3. BLOCK DIAGRAM – MAIN Section –
CNP300 (1/2)
BUS
AUDIO IN
• SIGNAL PATH
: MD PLAY
(L)
INPUT SELECT,
(R)
R-CH
ELECTRICAL VOLUME
IC300
: FM
: AM (MW/LW)
: BUS AUDIO IN
(Page 20)
(Page 20)
(Page 22)
(Page 22)
(Page 22)
A
B
E
F
G
DADT,
BCK,
LRCK,
FS256
RESET,
EMPHASIS
FM
AM
DATA, CLOCK
DADT
BCK
LRCK
FS256
RESET
EMPHASIS
CNP300 (2/2)
(L)
(R)
(L)
(R)
CNP500 (1/2)
(POWER CONNECTOR)
1
FRONT L (+)
9
FRONT L (–)
4
FRONT R (+)
12
FRONT R (–)
2
REAR L (+)
10
REAR L (–)
3
REAR R (+)
11
REAR R (–)
15
TEST MODE
TEL-ATT
13
FRONT
LINE OUT
(C5970/C5970R)
AUDIO OUT
(LINE OUT)
(C5960R)
REAR
LINE OUT
DATA
CLOCK
VOLUME
CONTROL
CIRCUIT
IIC BUS
SCL
SDA
SOFT
MUTE
2625 24
INPUT
SELECTOR
CIRCUIT
LOUDNESS
CONTROL
CIRCUIT
LOUDNESS
CONTROL
CIRCUIT
PDL
11
12
28
1
SE2L
SE1L
SE3L
R-CH
DIGITAL CONTROL
D/A
IC101
VOUTL
VOUTR
SDA
SCL
AF ATT
12
9
R-CH
70
71
61
DATA
5
BCK
6
LRCK
4
XTI
1
RSTB
15
INPUT
INTERFACE
CLK
CONTROL
DIGITAL
FILTER
MODE
CONTROL
DM1
17 16
DM0
NOISE
SHAPER
MASTER CONTROLLER
CONVERTER
DIGITAL FILTER,
D/A CONVERTER
IC700 (2/4)
MUTE
TONE
CONTROL
CIRCUIT
R-CH
R-CH
FADER
FADER
OUT FL
OUT RL
D701
22
20
MUTING
Q302
MUTING
Q403
MUTING
Q303
MUTING
Q402
R-CH
(C5970/C5970R)
R-CH
POWER AMP
IC500
12
FL-IN
14
FR-IN
11
RL-IN
15
RR-IN
MUTE
22
4
ST-BY
FL+
FL–
FR+
FR–
RL+
RL–
RR+
RR–
5
3
21
23
9
7
17
19
MUTING
Q301
MUTING
Q401
MUTING
Q300
MUTING
Q400
(Page 20)
(Page 20)
LOCK
C
MD-ATT
D
05
LOCK IN
58
AMP ON
TESTIN
TEL-ATT
AU ATT
55AMP ATT
56
32
80
D700
60
COM +8V
Q702 (1/2)
D703
MUTING
CONTROL SWITCH
Q702 (2/2)
BATTERY OFF
MUTE DRIVER
Q704
LEVEL SHIFT
Q500
(C5970/C5970R)
MUTING
CONTROL SWITCH
Q703
D511
BATT B+
AMP ON
STB
MUTE
H
I
J
(Page 27)
(Page 28)
(Page 27)
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