Sony D-E505, Service Manual

Page: 11 / 27

D-E505/E554
– 17 –
– 18 –
– 19 –
– 20 –
6-2. BLOCK DIAGRAM – POWER SUPPLY Section –
+
–
BATT B+
MOTOR/COIL DRIVER (IC504),
HEADPHONE AMP (IC302) B+
RECHARGEABLE
BATTERY
NH-DM2AA
2PCS. 2.4V
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION LR6)
2PCS. 3V
D407
CHARGE
SWITCH
Q402, 414
REGULATOR
IC402
CHARGE
MONITOR
IC403
A/D
CHARGE
SWITCH
Q401
DC/DC
CONVERTER
T401
AUTOMATIC POWER
CONTROL
Q408
SWITCHING
REGULATOR
Q406
DC/DC CONVERTER
MUTE SWITCH
Q452
VCPU VOLTAGE
MONITOR
Q417
RECTIFIER
Q405
ERROR
AMP
PWM
2
PWM
1
ERROR
AMP
REGULATOR
LOW VCPU
DETECT
DC IN
DETECT
SYSTEM
CONTROL
CHARGE
AMP
OSC
Q403
7
10
6
11
29
BATT B+
SYSTEM CONTROLLER
IC801 (2/2)
POWER CONTROL
IC401
LD1 LD1, LD2
LD2
Q409
Q409, 410
AUTOMATIC
POWER CONTROL
SWITCH
Q410
Q411
SWITCHING
DDCMUTE
VCPU
VCPU
VCPU
VCPU
VCPU
VCC
VCC
DTC1
8
INM1
9
INP1
RF1
CMP1
DTC3
5
2
PCON 27
CHGON 11
RESET 20
CHGMNT1 59
INP2
20
17
VCPU
PCB
18
CHGON
15
CKOUT
23 VG
2
DCDTB
31
CHGOUT
CHGMNT2 61
VCCMNT 5
BATMNT 58
DCINMNT 57
14
RSTB
VCC
RV401
VREF
VREF
VCPU
VOUT2
35
RF3
33 CHGSW
1
RS
32
BATM
30
VIN
STEP UP
DC/DC
CONVERTER
21
SW
22
VDD
34 DCIN
D415
D404
D806
D411
1
4
3
CHARGE
Q407
AUTOMATIC POWER
CONTROL SWITCH
Q453
DC/DC CONVERTER
MUTE SWITCH
RIPPLE
FILTER
Q451
PWM
4
25
UPCK1B
24
UPCK1
26
VOUT1
BATT B+
(Page 13)
A
VG
(Page 13)
C
DCDTB
(Page 16)
D
CLK
(Page 13)
B
J401
DC IN 4.5V
–
+
05
Q454
DC/DC CONVERTER
MUTE SWITCH
DPCON 3
(Suffix -11)
(Suffix -12)
(Suffix -12)
(Suffix -12)
16
SYNC
176K
E
(Page 16)
(Suffix -12)
(Suffix -11)
6-3. IC PIN FUNCTION DESCRIPTION
•
Pin No. Pin Name I/O Description
1 VDD
— Power supply terminal (+3V)
2 DDCMUTE O DC/DC converter muting control signal output terminal
3 DPCON O
DC/DC converter on/off selection signal output terminal
4 OE O
Output enable signal output to the MPC17A51VMEL (IC504) “L” active
5 VCCMNT I Main DC/DC converter voltage (+2.75V) monitor input (A/D input)
6
MDL SL I Destination setting terminal Fixed at “L” in this set
7 LIGHT
O
Back light control signal output to the liquid crystal display on the switch unit
“H”: back light on Not used (open)
8 C2PO FILTER O C2PO (error condition monitor) filter on/off control signal output terminal
9 DACLT O
Serial data latch pulse signal output to the D/A converter (IC301)
10 C2POEN
O
C2PO (error condition monitor) signal control output terminal
“L”: stop mode, “H”: searching
11 CHGON O Charging on output to the MPC18A26VMEL (IC401) “L”: charge on
12 RMDAT
I/O Communication data in/out for the liquid crystal display with remote commander
13 VLCD3 O
14 VLCD2 O Power supply output for the liquid crystal display bias
15 VLCD1 O
16 VSS
— Ground terminal
17 VPP — Power supply terminal (0V)
18
TON O Traverse on/off control signal output to the auto traverse circuit
19
XOSC2 O Standby control signal output to the headphone amplifier (IC302)
20
RESET I
System reset signal input from the MPC18A26VMEL (IC401) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
21
OSC1 I Main system clock input terminal (4.195 MHz)
22
OSC2 O Main system clock output terminal (4.195 MHz)
23 SUBQ I Sub-code Q data signal input from the BU9325BKS (IC502)
24
CDATA O Serial data output to the D/A converter (IC301) and BU9325BKS (IC502)
25
SQCK O
Sub-code Q data reading clock signal output to the D/A converter (IC301) and BU9325BKS
(IC502)
26 RW O
Data read/write selection signal output to the BU9325BKS (IC502)
“L”: reading mode, “H”: writing mode
27 PCON O
Power on/off control signal output to the MPC18A26VMEL (IC401)
“L”: power on, “H”: power off
28 AMUTE O Analog muting on/off control signal output terminal “H”: muting on
29 XAVLS I
AVLS (Automatic Volume Limiter System) switch (S301) input terminal
“L”: limit mode, “H”: normal mode
30 XRST O
System reset signal output to the BU9325BKS (IC502) and D-RAM controller (IC601)
“L”: reset
31 XHOLD I HOLD switch (S804) input terminal “L”: hold on, “H”: hold off
32 XRCHG I
Rechargeable battery pack detection switch input terminal “L”: rechargeable battery pack in
Not used (open)
33 XLMT I
Sled limit-in detection switch (S901) input terminal
The optical pick-up is inner position when “L”
34 XRSM I RESUME switch (S803) input terminal “L”: resume on, “H”: resume off
35 OPEN I
CD door open/close detection switch (S801) input terminal
The stop status is reset with the falling edge of input signal
MAIN BOARD IC801 (SYSTEM CONTROLLER)
MC68HC05L24-SC440482CFU (SUFFIX-11), MC68HC05L24-SC440488CFU (SUFFIX-12)
Pin No. Pin Name I/O Description
36 WP I
Wake-up control signal input terminal
The stop status is reset with the falling edge of input signal
37 XLT O Serial data latch pulse signal output to the D-RAM controller (IC601) (for ESP)
38 XSOE O Serial data output enable signal output terminal (for ESP) Not used (pull up)
39 SDTO I Serial data input from the D-RAM controller (IC601) (for ESP)
40 SDTI O Serial data output to the D-RAM controller (IC601) (for ESP)
41 SCK O Serial data transfer clock signal output to the D-RAM controller (IC601) (for ESP)
42 FOK I Focus OK signal input from the RF amplifier (IC501) “L”: NG, “H”: OK
43 BUSY I Busy signal input from the BU9325BKS (IC502) “L”: track jump mode, “H”: servo loop on
44 BEEP O Beep sound output to the headphone amplifier (IC302)
45 SCOR I Sub-code sync (S0+S1) detection signal input from the BU9325BKS (IC502)
46 IRMC I Attenuate display selection signal input from the RF amplifier (IC501)
47 VDD — Power supply terminal (+3V)
48 to 51 COM3 to COM0 O Common drive signal output to the liquid crystal display on the switch unit
52 VREFH I Reference voltage input terminal (+3V) (for A/D converter)
53 VREFL I Reference voltage input terminal (0V) (for A/D converter)
54 ESPSL/TEST I Service mode setting terminal “L”: service mode, Normally: fixed at “H”
55 KEY I Key input from the switch unit (A/D input)
56 RMKEY I Key input from the headphone with remote commander (A/D input)
57 DCINMNT I DC in voltage detection input terminal (A/D input) Also used for DC IN detection
58 BATMNT I
Battery voltage detection input terminal
Also used for rechargeable battery/dry battery detection
59 CHGMNT1 I Battery charging voltage detection input from the MPC18A26VMEL (IC401)
60 VSS — Ground terminal
61 CHGMNT2 I
Battery voltage detection input terminal (A/D input)
Also used for rechargeable battery/dry battery detection
62 OSMNT I DSP offset voltage adjustment voltage monitor input from the BU9325BKS (IC502)
63 to 77 SEG0 to SEG14 O Segment drive signal output to the liquid crystal display on the switch unit
78, 79 SEG15, SEG16 O Segment drive signal output terminal Not used (open)
80 X9326 I/O
Error correction “L”: quadruple correction, “H”: double correction
Fixed at “H” in this set