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DPIF-5000
Service manual
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Sony DPIF-5000 Service manual

DP-IF5000
SERVICE MANUAL
Ver 1.1 1999. 02
Manufactured under license from Dolby Laboratories Licensing
•
Corporation. DOLBY, the double-D symbol a , “PRO LOGIC”, “Dolby Digital (AC-3)”, and “VIRTUAL DOLBY DIGITAL” are trademarks of Dolby Laboratories Licensing Corporation.
DP-IF5000 is the component model block one in
•
MDR-DS5000.
COMPONENT MODEL NAME FOR MDR-DS5000
DIGITAL SURROUND PROCESSOR DP-IF5000 CORDLESS STEREO HEADPHONES MDR-IF5000
US Model
Canadian Model
AEP Model
UK Model
E Model
SPECIFICATIONS
Modulation System Frequency modulation Carrier wave frequency Right channel 2.8 MHz
(square-type) × 1
Analog input (pin jack
right/left) × 1 Power requirements DC 9 V (from the
supplied AC power
adapter) Dimensions (w/h/d) Approx. 85 × 190 × 180
mm Mass Approx. 1.0 kg
(1000 g)
MICROFILM
Design and specifications are subject to change without notice.
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
DIGITAL SURROUND PROCESSOR
– 1 –
TABLE OF CONTENTS
1. GENERAL
Listening to the Sound of a Connected Component ............... 3
2. DISASSEMBLY
2-1. Cover Assy .......................................................................... 5
2-2. Panel Assy , Front.................................................................5
2-3. Panel Assy , Sub ................................................................... 6
2-4. TX Board ............................................................................ 6
3. SERVICE MODE
3-1. General ................................................................................ 7
3-2. Setting the Test Mode.......................................................... 7
3-3. Releasing the Test Mode ..................................................... 7
3-4. Test Mode............................................................................7
4. ELECTRICAL ADJUSTMENTS...................................8
5. DIAGRAMS
5-1. Block Diagram –Processor Section–................................... 9
5-2. Block Diagram –Transmitter Section–..............................11
5-3. Printed Wiring Board
–Processor, Transmitter Section–...................................... 14
5-4. Schematic Diagram –Processor Section– ......................... 17
5-5. Schematic Diagram –Transmitter Section– ......................20
5-6. Printed Wiring Board –LED Section– .............................. 22
5-7. Schematic Diagram –LED Section– .................................23
5-8. Printed Wiring Board –Amplifier Section–....................... 25
5-9. Schematic Diagram –Amplifier Section– .........................26
5-10. IC Pin Descriptions........................................................... 29
6. EXPLODED VIEW........................................................... 34
7. ELECTRICAL PARTS LIST......................................... 35
– 2 –
SECTION 1

GENERAL

This section is extracted from instruction manual.
– 3 –
– 4 –
SECTION 2
5

DISASSEMBLY

• The equipment can be removed using the following procedure.
Set Cover assy Panel assy, front Panel assy, sub
TX board
Note : Follow the disassembly procedure in the numerical order given.
2-1. COVER ASSY
5
cover assy
2-2. PANEL ASSY, FRONT
!º
panel assy, front
1
PTT 2.6X5
9
claws
2
PTT 2.6X5
7
P 3X6
3
PTT 2.6X5
2
4
PTT 2.6X5
PTT 2.6X
1
PTT 2.6X5
3
lug plate
5
CN103
– 5 –
4
CN102
8
P 3X6
6
CN901
2-3. PANEL ASSY, SUB
b
2
P 2.6X6
1
P 2.6X6
3
LED board
4
panel assy, su
2-4. TX BOARD
3
PTT 2.6X5
2
PTT 2.6X5
4
TX board
– 6 –
1
P 3X6
SECTION 3

SERVICE MODE

3-1. GENERAL
This set has the test mode of the built-in microprocessor which allows various check items required repairing.
3-2. SETTING THE TEST MODE
Press the POWER key and the EFFECT key at the same time and turn on the power. (Insert the DC plug.)
3-3. RELEASING THE TEST MODE
Press the POWER key to turn of f the power . (Remove the DC plug.)
3-4. TEST MODE
1. LED check
LEDs go on in sequence *1)
DEMO key
All LEDs on
DEMO key
All LEDs off
Go to Key check
*1) In test mode
2. Key check
Press each key and its corresponding LED goes on *2)
DEMO key
Go to Audio check
*2) Corresponding LEDs
POWER key : POWER LED INPUT key : ANALOG LED EFFECT key : MUSIC LED OUTPUT key : VIRTUAL LED
*3) Digital input check : Do not use this in repair. *4) Analog input check :Other than MUTE check, do not use this
in repair. *5) Mute mode : Use this in electrical adjustment (see page 8). *6)
C
L
LS
4. IF test tone
POWER and MUSIC LEDs on
L LED on
C LED on
R LED on
RS LED on
LS LED on
R
RS
OUTPUT key
1 kHz, –10 dBv
OUTPUT key
1 kHz, –30 dBv
OUTPUT key
100 Hz, –30 dBv
OUTPUT key
10 kHz, –30 dBv
OUTPUT key
1 kHz, FS
OUTPUT key
DEMO key
HR LED
HL LED
3. Audio check
ANALOG, HR and HL LEDs on *4) *6)
End of Test mode
POWER, DIGITAL, L and R LEDs on *3)
DEMO key
DEMO key
HL and HR LEDs off *5)
DEMO key
Go to IF test tone
– 7 –
SECTION 4

ELECTRICAL ADJUSTMENTS

Notes:
1. These adjustments are performed in the order that they are described.
2. Adjustment and measurement are performed for each channel unless otherwise specified.
3. Adjustment is made for the right channel first and then the left channel.
4. The power voltage is supplied with 9 V.
Oscillation Frequency Adjustment
Setting:
digital frequency counter
TP03 or TP04 (L-ch)
TP05 or TP06 (R-ch)
LED board
+ –
Adjustment method:
• Perform this adjustment without signal.
1. Connect TP L (L-ch) and TP R (R-ch) to ground on the LED board (to set the mute state), or use the test mode to set the mute state (see page 7).
2. Connect a digital frequency counter to TP03 or TP04 for L-ch and TP05 or TP06 for R-ch on the LED board.
3. Adjust L51 (L-ch) and L1 (R-ch) on the TX board so that the reading on the digital frequency counter is each within 2.3 MHz (L-ch) and 2.8 MHz (R-ch).
Adjustment Location:
– TX board (side B) –
TP L TP R
– LED board (conductor side) –
TP05
TP06
TP L
TP R
TP05
TP06
Specified value:
L-ch L51 2.298 to 2.302 MHz R-ch L1 2.798 to 2.802 MHz
RF Level Adjustment
Setting:
digital voltmeter
TP03 or TP04 (L-ch)
TP05 or TP06 (R-ch)
LED board
+ –
Adjustment method:
• Perform this adjustment without signal.
1. Connect TP L (L-ch) and TP R (R-ch) to ground on the LED board (to set the mute state), or use the test mode to set the mute state (see page 7).
2. Connect a digital voltmeter to TP03 or TP04 for L-ch and TP05 or TP06 for R-ch on the LED board.
3. Adjust RV51 (L-ch) and RV1 (R-ch) on the TX board so that the reading on the digital voltmeter is 480 mV.
Specified value:
L-ch RV51 477.5 to 482.5 mV R-ch RV1 477.5 to 482.5 mV
TP03
TP04
– TX board (side A) –
TP04
RV51
RV1
L51 L1
TP03
RF LEVEL ADJUSTMENT
OSCILLATION FREQUENCY ADJUSTMENT
– 8 –
SECTION 5 DIAGRAMS
DP-IF5000
5-1. BLOCK DIAGRAM — PROCESSOR SECTION —
OPTICAL
RECEIVER
MODULE
IC305
DIGITAL
1
B+
(+9V)
OUT
VCC
3
ATT SW
Q101
ATT SW
Q102
(+5V)
2 3
5 6
B+
LINE AMP
IC101
– +
– +
V IN L
1
6
1
6
V IN R
FRONT END
FRONT END
J101
LINE INPUT
–1
L
R
–2
SW101
–6dB
DIGITAL IN
ANALOG L
ANALOG R
ATT 0dB
ANALOG
ANALOG
+ –
+ –
A/D CONVERTER
DELTA SIGMA
MODULATOR
Signal path
IC102 (1/2)
DECIMATION
: DIGITAL
: ANALOG
FILTER
DIGITAL
AUDIO
INTERFACE
(1/2)
D OUT
19
(+3.3V)
(+3.3V)
DIGITAL
B+
B+
AC-3/PROLOGIC
SURROUND DECODER
IC301
61 80
SPFRK
8319
SDA
6
•
12
•
17
•
30
•
35
•
45
VDD
•
55
•
59
•
67
•
81
•
84
•
93
70
VCCA
SDB
SBC
SCKB SCKA
WSB WSA
SCKIN
SO
GPIO0
SI
SCK
RESET
SS
XT1
79
95 91
95 92
66
34
58
SO1
89
SCK1
87
82
3
CLOCK 12M
64
FRONT LR
REAR LR
BCK 64fs
L/R 1fs
MCK 256fs
9
10
12 13
5 4
1 2
B+
(+5V)
5 4
2 1
13 12
B+
(+5V)
INVERTER IC203(1/2)
12 13
X201
12.288MHz
1 2
6
INVERTER
IC203(2/2)
NAND IC303
8
11
6
3
NAND IC304
6
3
11
5
CMOS LOGIC
3
4
11
10
8 41
IC201
10 6
CLOCKQ1Q3
9
B+
(+5V)
PROCESSOR
57
SDI0
56 47
SDI1
51
SCKR
49
SCKT
55
WSR
50
WST
35
MISO/SDA
41
SI
26
SCK/SCL
SI1
57
P20(SI1)
37
P01
S01
58
P21(SO1)
SCK1
59
P22(SCK1)
RESET
49
SSZ11
X1
X2
P12
48
P11
PROGRAM,
SYSTEM
CONTROL
42
X1
X2
40
V
55
AV
IC105
DD
LOGIC 3D
IC302
P24(BUSY)
DD
SDO0
VCCA
VCCD
VCCP
VCCQ
VCCS
HREQ
RESET
GPIO3 GPIO2 GPIO1 GPIO0
EXTAL
P64 P65 P66 P67
P17 P10
P40 P41 P42 P43 P44
P50 P51 P52 P27 P26
P16 P15
P57
RESET
5-2. BLOCK DIAGRAM — TRANSMITTER SECTION —
B+
(+9V)
B+
(+9V)
INFRARED
EMITTER
D301-304
INFRARED
EMITTER
D305-308
REG
Q35, 36
RF LEVEL
(L-CH)
RF LEVEL
(R-CH)
J901
PHONES
J801
DC IN 9V
RV51
RV1
BUFFER
Q52
BUFFER
Q2
LED
DRIVE
Q301,351
LED
DRIVE
Q302,352
AFC
MUTE
Q901
MUTE
Q902
SW+9V
REG
Q803
RESET
IC204
(+5V)
IC1
B+
B+
(+9V)
6 5
3 2
BINAURAL L
7
BINAURAL R
1
– +
HEADPHONES
AMP
IC901 +
–
+9V REG
IC805
+9V REG
IC804
+5V REG
IC801
D/A CONVERTER
LR DATA
6
•
17
70
30
9
•
28
•
53 40
•
48
43 42
CS
36
73 74 75 76 27
31 32 33 34
54 47 61
10 11 12 13 14
18 19 20 64 63
539 52
26
35
BUSY
RESET
POWER SELECT MODE EFFECT DEMO
LEDEN LEDLAT LEDRES SCK0 SO0
B+
(+5V)
B+
(+5V)
B+
(+5V)
B+
(+5V)
B+
(+5V)
BLOCK SW1-5
SW
MUTE POWER A
POWER B
RESET
LRCK BCKIN CLK10 RST
3
EN
2
LATO2O3
3
RES
15
SCK
14
SIN
13
SO
4
SIN O2
13
EN
2
LAT
3
RES
15
SCK
14
TRANSMITTER
1
SECTION
TRANSMITTER
2
SECTION
DISPLAY
LED DRIVE
IC205
O1
12 11 10
O4
9
O5
8
O6
7
O7
6
O8
5
O1
12 11
O3
10
O4
9
O5
8
O6
7
O8
5
DISPLAY
LED DRIVE
IC206
TRANSMITTER SECTION
DISPLAY
LED DRIVE
D201-208
DISPLAY
LED
D209-214,216
PROCESSOR
SECTION
PROCESSOR
SECTION
LR DATA
1
LRCK
BCK IN
CLK10
2
RST
DIGITAL
DIN
AUDIO
18
INTERFACE
(
2/2
16 17
CLK/OSC
22
MANAGER
RESET
28
)
INTERPOLATION
FILTER
PROCESSOR
SECTION
• Signal path
: DIGITAL
: ANALOG
: RF
IC102 (2/2
)
DELTA SIGMA MODULATION
3
MUTE
POWER A POWER B
RESET
LPF
&
BUFFER
BIAS
LPF
&
BUFFER
V OUT L
V COM
V OUT R
BINAURAL L
15
11
+
BINAURAL R
12
B+
(+3.3V)
–
2
+
3
AUDIO AMP
IC103
+
5
–
6
1
7
+3.3V
REG
IC803
(SW+5V)
9
MUTE
Q31
13
MUTE
Q32
MUTING
SW
Q33,34
-1 L
RV901
PHONES
LEVEL
-2 R
+5V REG
IC802
B+
B+
(SW+9V)
2.8MHz OSC
7
1
D51
L51
FREQUENCY
(L-CH)
2.3MHz OSC COIL
D1
L1
FREQUENCY
(R-CH)
COIL
LF801
6
4
6
4
B+ (SW+5V)
OSC Q51
2
OSC
Q1
2
SWITCH
– 9 – – 10 – – 11 –
– 12 –
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