The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power
cord is less than 460 kohms, the unit is defective.
LASER RADIATION
Do not stare into beam or view directly with optical instruments, class 3A laser product.
S-81/S-81DAB
CAUTION
Please heed the points listed below during servicing and inspection.
◎ Heed the cautions!
Spots requiring particular attention when servicing, such as
the cabinet, parts, chassis, etc., have cautions indicated on
labels or seals. Be sure to heed these cautions and the cautions indicated in the handling instructions.
◎ Caution concerning electric shock!
(1) An AC voltage is impressed on this set, so touching inter-
nal metal parts when the set is energized could cause
electric shock. Take care to avoid electric shock, by for example using an isolating transformer and gloves when
servicing while the set is energized, unplugging the power
cord when replacing parts, etc.
(2)There are high voltage parts inside. Handle with extra care
when the set is energized.
◎
Caution concerning disassembly and assembly!
Though great care is taken when manufacturing parts from
sheet metal, there may in some rare cases be burrs on the
edges of parts which could cause injury if fingers are moved
across them. Use gloves to protect your hands.
◎ Only use designated parts!
The set's parts have specific safety properties (fire resistance, voltage resistance, etc.). For replacement parts, be
sure to use parts which have the same properties. In particular, for the important safety parts that are marked ! on wiring
diagrams and parts lists, be sure to use the designated parts.
◎ Be sure to mount parts and arrange the
wires as they were originally!
For safety reasons, some parts use tape, tubes or other insulating materials, and some parts are mounted away from the
surface of printed circuit boards. Care is also taken with the
positions of the wires inside and clamps are used to keep
wires away from heating and high voltage parts, so be sure to
set everything back as it was originally.
◎ Inspect for safety after servicing!
Check that all screws, parts and wires removed or disconnected for servicing have been put back in their original positions, inspect that no parts around the area that has been
serviced have been negatively affected, conduct an insulation
check on the external metal connectors and between the
blades of the power plug, and otherwise check that safety is
ensured.
(Insulation check procedure)
Unplug the power cord from the power outlet, disconnect the
antenna, plugs, etc., and turn the power switch on. Using a
500V insulation resistance tester, check that the insulation resistance between the terminals of the power plug and the externally exposed metal parts (antenna terminal, headphones
terminal, microphone terminal, input terminal, etc.) is 1MΩ or
greater. If it is less, the set must be inspected and repaired.
CAUTION
Many of the electric and structural parts used in the set have
special safety properties. In most cases these properties are
difficult to distinguish by sight, and using replacement parts
with higher ratings (rated power and withstand voltage) does
not necessarily guarantee that safety performance will be preserved. Parts with safety properties are indicated as shown
below on the wiring diagrams and parts lists is this service
manual. Be sure to replace them with parts with the designated part number.
(1) Schematic diagrams ... Indicated by the ! mark.
(2) Parts lists ... Indicated by the ! mark.
Concerning important safety parts
Using parts other than the designated parts
could result in electric shock, fires or other
dangerous situations.
(1) Disconnect the connector of AC cord, and detach
the cord bushing.
(2) Remove 3 ( or 5 in the case of U.S.A. & Canada
model ) screw ⑥ and 5 (or 6 in the case DAB U.K.
and Japan model ) screws ⑦ .
Connector
Cord Bush
4. リアパネルのはずしかた
(1) AC コードのコネクタとコードブッシュをはずし
ます。
(2) ⑥のネジ 3 本 (U.S.A.&Canada モデルの場合 :5
本)と⑦のネジ 5 本 (DABU.K. と日本モデルの場
合 :6 本)をはずします。
7
6
6
7
7
6
6
S-81/S-81DAB
5. CD Mecha. Unit
(1) Open the Tray completely by turning the gear under
the Mecha. Unit counterclockwise.
(2) Remove 2 screws ⑧ on the Tray’s hole.
(3) Remove 2 rear screws ⑨ fixing the CD Mecha.
(4) Detach the CD Mecha. to the arrow direction.
(5) Lift the CD Mecha. and disconnect FFC and con-
13XINCrystal oscillator input (external reference signal input)
7T1Test input (This pin must always be connected to ground.)Input
8T2
9T3 (RDCL)Test I/O (RDS clock output)
10T4 (RDDA)Test I/O (RDS data output)
11T5 (RSFT)Test I/O (soft-decision control data output)
16T6 (ERROR/57K/TP/BE1)
17 T7 (CORREC/ARI-ID/TA/BE0)
18SYNCBlock synchronization detection output
Test input (standby control)
0: Normal operation, 1: Standby state (crystal oscillator stopped)
Test I/O (error status output, regenerated carrier output,
TP output, error block count output)
Test I/O (Error correction status output, SK detection output,
TA output, error block count output)
I/O*
X
X
IN
OUT
Vssd
Vdda
Vssa
V
REF
Vddd
Vssd
S
Vssd
A12365
A12366
A12367
A12368
A12369
A12370
A12371
19RDS-IDRDS detection output
Output
20DOData output
21CLClock input
22DIData input
23CEChip enable
24SYRSynchronization and RAM address reset (active high)
14VdddDigital system power supply (+5 V)ÑÑ
15VssdDigital system groundÑÑ
Note: * Normally function as an output pin. Used as an I/O pin in test mode, which is not available to user applications.
Serial data interface (CCB)
Input
19
Vssd
S
Vssd
A12372
A12373
M3062LFGPGP (IC103 : 1U-3761)
S-81/S-81DAB
PIN FUNCTION
Pin
No.
1F.AUX_INI-F.AUX connected/disconnected detection input (H : Connected)
2FL_RESETOLReset output to driver built into FL display tube
3FLDASOLSerial data output to driver built into FL display tube
4NCOLNot used
5FLCKCLKLSerial clock output to driver built into FL display tube
6BYTEI-External data bus width switching input (GND : Single chip mode)
7CNVSSI-Processor mode switching input (GND : Single chip mode, PULL DOWN)
8NCOLNot used
9NCOLNot used
10RESETI-Reset input
11XOUTO-Oscillator output (16MHz)
12VSS--GND
13XINI-Oscillator input (16MHz)
14VCC1--Power supply
15NMIINT-Not used (PULL UP)
16/PROTECTINT-Speaker and driver IC error detection input
17REQSINT-Communications request input from CD microprocessor
18/IPOD_PROTECTI-i-Pod supply power error detection input
1950/60I-Supply power pulse input (50Hz / 60Hz)
Port NameI/OInitialFunction
20
S-81/S-81DAB
Pin
No.
20REQHOLCommunications request output to CD microprocessor
21XM_COMMANDOLNot used (XM ready command output)
22XM_REQI-Not used (XM ready REQUEST terminal)
23VOL_JOGBI-JOG pulse input B for VOL
24VOL_JOGAI-JOG pulse input A for VOL
25FLCSOLChip selection output to driver built into FL display tube
26MSCLKCLKLCommunications serial clock output to CD microprocessor
27MDORXD-Communications serial clock input from CD microprocessor
28MDITXDLCommunications serial data output to CD microprocessor (Nch open Drain -
29IS1_DINTXDLi-Pod READY/CONNECT comunications output (UART)
30IS1_DOUTRXD-i-Pod READY/CONNECT comunications input (UART)
31IPOD_SELOLi-Pod READY/CONNECT switching output (H : READY, L: CONNECT)
32XM_RESETOLXM ready RESET output
33XM_MOXMITXDLXM ready comunications input (UART)
34XM_MIXMORXDLXM ready comunications output (UART)
35XM_POWEROLXM ready power control output
36PWRON_CDOLCD unit power control output
37/CDRESETOLReset output to CD microprocessor
38H/P_SWI-Headphones connected/disconnected detection input
39LED_DAOLDATA output to LED driver (BU2090F)
40E2P_CLKOLClock output to EEPROM
41E2P_DOI-Data input from EEPROM
42E2P_DIOLData output to EEPROM
43E2P_CSOLChip selection output to EEPROM
44LED_CKOLCLOCK output to LED driver (BU2090F)
45NCOLNot used
46PWB_CHECKI-PWB checking mode input (PULL DOWN)
47PWB_CHECKI-PWB checking mode input (PULL DOWN)
48PWB_CHECKI-PWB checking mode input (PULL DOWN)
49PWB_CHECKI-PWB checking mode input (PULL DOWN)
50REC_MUTEOLREQ MUTE terminal (H : MUTE)
51CLOLMONO_OUT electronic volumu clock output (BD3812F)
52EMPHASIS_INI-Emphasis signal input
53SP_DETECTI-SP connected/disconnected detection input (H : SP Connected)
54CLOCK_SEL1OLMaster clock audio data selection output 1 (selection 1 : selection XM and CD)
55CLOCK_SEL2OLMaster clock audio data selection output 2 (Selection selection 1 output and AD
56SP_RLOLRelay output (L : MUTE)
57SEL_CLKOLInput SELECTOR (BD3843FS) clock signal
58SEL_DATAOLInput SELECTOR (BD3843FS) data latch output
59DAOLElectronic volumu (BD3812FS) data latch output
60VCC2--Power supply
61H/P_MUTEOLHeadphone MUTE output (L : MUTE ON)
62VSS--GND
63P.ON/OFFOLOverall product power ON/OFF (standby) output
64STEREOI-Tuner stereo signal detection input
65/TUNEDI-Tuner reception detection input
66T.MUTEOLTuner MUTE output
67SANYO_CEOLChip enable output to tuner PLL/RDS IC
68SANYO_DIOLData output to tuner PLL/RDS IC
69SANYO_CLKOLClock output to tuner PLL/RDS IC
70SANYO_DOI-Data input from tuner PLL/RDS IC
71WAKEINT-Button accept interrupt input (for resetting from low power consumption mode)
72TU_POWEROLTuner power ON/OFF control (H : Tuner ON)
73REMOTEINT-IR remote controller input
Port NameI/OInitialFunction
PULL UP)
converter output)
21
S-81/S-81DAB
Pin
No.
74/SYROLReset output to tune RDS's IC
75DOUTMUTEOLD.OUT MUTE output ( H : MUTE)
76CLSWI-CD MECHA. CLOSE SW detection input
77OPSWI-CD MECHA. OPEN SW detection input
78SELOLMONO_OUT signal selection output
79OPENOLOPEN control signal output to loading driver (BA6287F)
80CLOSEOLCLOSE control signal output to loading driver (BA6287F)
81VR_DSP_CLOCKOLClock output to digital audio PWM processor (TAS5504)
82VR_DSP_DATAOLData output to digital audio PWM processor (TAS5504)
83DSP_MUTEOLMute output to digital audio PWM processor (TAS5504)
84DSP_RESETOLReset output to digital audio PWM processor (TAS5504)
85H/P_SELOLH/P selection signal output to digital audio PWM processor (TAS5504) (L : H/P-
86/DSP_PDNOLPower down control output to digital audio PWM processor (TAS5504) (L :
87ROM_CORRECTI
88USA/EURO/
89IPOD_FUNCI (AD)-iPod type selection inpu (CONNECT : 0 to 1.1V, READY : 1.2 to 2.2V, APPLE :
90DIMMEROLNot used (as DIMMER detection input, output port setting)
91XM/DAB/NOI (AD)-Product type selection input (NO : 0 to 1.1V, DAB : 1.2 to 2.2V, XM : 2.3 to 3.3V)
92RDSI- RDS YES/NO selection input (H : YES, L : NO)
93KEY0I (AD)-Main unit's operating button detection input
94AVSS--GND for AD converter
95KEY1I (AD)Main unit's operating button detection input
96VREF--Reference voltage input for AD converter and DA converter
97AVCC--Power supply of AD converter
98IPOD_CONNECTI-i-Pod connected/disconnected detection input (L : Connected)
99IPOD_IDOLi-Pod ID (Accessory) ON/OFF switching output (H : ON)
100IPOD_CHARGEOLi-Pod power supply ON/OFF control output
Port NameI/OInitialFunction
ON & SP_OUT-OFF)
Power down)
I-Not used (PULL UP)
ON
I-Product destination selection input (JAPAN : 0 to 1.1V, EURO : 1.2 to 2.2V, USA
JAPAN
: 2.3 to 3.3V)
2.3 to 3.3V)
22
PCM1748E (IC201 : 1U-3761)
BCK
DATA
LRCK
DGND
V
V
V
OUT
V
OUT
1
2
3
4
5
DD
6
CC
7
L
8
R
PCM1748E
16
SCK
15
ML
14
MC
13
MD
12
ZEROL/NA
11
ZEROR/ZEROA
10
V
COM
9
AGND
S-81/S-81DAB
PIN ASSIGNMENTS
PIN NAMETYPEFUNCTION
1BCKINAudio Data Bit Clock Input.
2DATAINAudio Data Digital Input.
3LRCKINL-Channel and R-Channel Audio Data Latch En-
able Input.
(1)
4DGND-Digital Ground
5V
6V
7V
OUT
8V
OUT
-Digital Power Supply, +3.3V
DD
-Analog Power Supply, +5V
CC
LOUTAnalog Output for L-Channel.
ROUTAnalog Output for R-Channel.
9AGND-Analog Ground
10V
COM
-Common Voltage Decoupling.
11 ZEROR/OUTZero Flag Output for R-Channel/Zero Flag Output
ZEROAfor L/R-Channel.
12
ZEROL/NA
OUTZero Flag Output for L-Channel/No Assign.
13MDINMode Control Data Input.
14MCINMode Control Clock Input.
15MLINMode Control Latch Input.
16SCKINSystem Clock Input.
1VREFLVREFL--GND (AD converter VREFL)
2AVSSAVSS--GND
3AVCCAVCC--+3.3V
4P70/TA0IN-OLNot used
5P71/TA1OUT-OLNot used
6P72/TA3OUT-OLNot used
7P73/TA4IN-OLNot used
8P74/TA5OUT-OLNot used
9P75/TA7OUT-OLNot used
10P80/TB0IN0/INT534REQI-Request input from TC94A34FG(MP3/WMA DECORDER)
11P81/TB0IN1/INT6REQHI-Request input from System ucom
12P82/TB0OUT0REQSOLRequest output to System ucom
13P83/TB0OUT1-OLNot used
14P84/TB1IN0/INT7PWRON_CDI-Power ON/OFF switching input from System ucom
15P85/TB1IN1/INT8-OLNot used
16P86/TB1OUT0-OLNot used
17P87/TB1OUT1-OLNot used
18P90/TXD0MDOOLSerial Data output to System ucom
19P91/RXD0MDII-Serial Data input from System ucom
20P92/SCLK0/CTS0
21P93/TXD1TXDOLUse for the WRITING
22P94/RXD1RXDI-Use for the WRITING
23P95/SCLK1/CTS1
24AM0AM0I-Fixed to H (+3.3V)
25DVCCDVCC--+3.3V
26X2X2O-Oscillator output (27MHz)
27DVSSDVSS--GND
28X1X1I-Oscillator input (27MHz)
29AM1AM1I-Fixed to H (+3.3V)
30RESET
31P96/XT1-OLNot used
32P97/XT2-OLNot used
33EMU0EMU0O-Non connection
34EMU1EMU1O-Non connection
35PA0/INT1-OLNot used
36PA1/INT2-OLNot used
37PA2/INT3-OLNot used
38PA3/INT4-OLNot used
39PA4-OLNot used
40PA5-OLNot used
41PA6-OLNot used
42PA7-OLNot used
43ALE-OLNot used
44P00/AD0MODE0I-MODEL SELECT
45P01/AD1MODE1I-MODE0:1 L:L=S81(J/E3) / L:H=S81(E2) / H:H=DCDF102(ALL)
46P02/AD2-OLNot used
47P03/AD3-OLNot used
48P04/AD4DAC_CSOHMode control latch output to PCM1748E(DAC)
49P05/AD5-OLNot used
50P06/AD6DAC_RSTOLReset output to DAC (RESERVE)
51P07/AD7DAC_MDIOLMode control data output to PCM1748E(DAC)
52P10/AD8/A8DAC_MCKOLMode control clock output to PCM1748E(DAC)
53P11/AD9/A9-OLNot used
54P12/AD10/A10-OLNot used
55P13/AD11/A11EMPHASISOLEmphasis output to System ucom
56P14/AD12/A12-OLNot used
57P15/AD13/A13-OLNot used
58P16/AD14/A14-OLNot used
59P17/AD15/A1534RESETOLReset output to TC94A34FG(MP3/WMA DECORDER)
Pin NameSymbolI/OInitialFunction
MSCLKI-Serial Clock input from System ucom
-OLNot used
CDRESETI-Reset input from System ucom
26
S-81/S-81DAB
Pin
No.
60P20/A0/A1634STANBYOLStandby control output to TC94A34FG(MP3/WMA DECORDER)
61P21/A1/A1734SRMSTBOLSRAM Standby control output to TC94A34FG(MP3/WMA DECORDER)
62DVSSDVSS--GND
63NMI
64DVCCDVCC--+3.3V
65P22/A2/A18-OLNot used
66P23/A3/A19DOUTSELOLDOUT SELECT output to TC7WH157 ( L:CD-DA / H:MP3/WMA )
67P24/A4/A20-OLNot used
68P25/A5/A2114RESETOLReset output to TC94A14FA(Servo DSP)
69P26/A6/A2214CCEOHChip Enable output to TC94A14FA(Servo DSP)
70P27/A7/A2314BUCKOLSerial Clock output to TC94A14FA(Servo DSP)
71P30/RD
72P31/WR
73P32/HWR
74P33/WAIT
75P34/BUSRQ
76P35/BUSAK
77P36/R/W
78P37/BOOT
79P40/CS0
80P41/CS1
81P42/CS2
82P43/CS3
83P60/SCK-OLNot used
84P61/SO/SDA34MIDIOI/OLData I/O to TC94A34FG(MP3/WMA DECORDER)
85P62/SI/SCL34MICKOLClock output to TC94A34FG(MP3/WMA DECORDER)
86P63/INT0-OLNot used
87P64/SCOUT-OLNot used
88P65-OLNot used
89DVCCDVCC--+3.3V
90P66-OLNot used
91DVSSDVSS--GND
92P50/AN0-I-Not used (Pull down)
93P51/AN1-I-Not used (Pull down)
94P52/AN2-I-Not used (Pull down)
95P53/AN3/ADTRG
96P54/AN4-I-Not used (Pull down)
97P55/AN5-I-Not used (Pull down)
98P56/AN6-I-Not used (Pull down)
99P57/AN7LD_CHKI-Current check of LD
100VREFHVREFH--+3.3V (AD converter VREFH)
Pin NameSymbolI/OInitialFunction
NMII-Not used (Pull down)
-OLNot used
-OLNot used
14BUS3I/OLDATA BUS to TC94A14FA(Servo DSP)
14BUS2I/OLDATA BUS to TC94A14FA(Servo DSP)
14BUS1I/OLDATA BUS to TC94A14FA(Servo DSP)
14BUS0I/OLDATA BUS to TC94A14FA(Servo DSP)
GVSWOLGain SW SELECT output to TA2157FNG(RF_AMP)
BOOTI-Use for the WRITING (L:BOOT)
DRVMUTEOHDrive Mute output to TA2125AF(Driver) ( H:Mute / L:Normal )
INSWI-Inner-Switch input from CD MECHA
-OLNot used
-OLNot used
-I-Not used (Pull down)
27
TA2157F (IC303 : 1U-3760)
S-81/S-81DAB
28
TA2125AF (IC304 : 1U-3760)
TA2125AF Terminal Function
S-81/S-81DAB
29
TC94A34FAG (IC306 : 1U-3760)
PIN ARRANGEMENT
S-81/S-81DAB
30
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