Block Diagram -Audio Section - Sony MZ-NHF800 Service Manual

MZ-NH700/NHF800
6-2. BLOCK DIAGRAM – AUDIO Section –
J301
LINE IN
(OPT)
B+ SWITCH
VC01 B+
Q301
A/D CONVERTER, MIC AMP
IC301
28 LIN
1 RIN
18 PREL
19 PRER
J302
MIC
(PLUG IN POWER)
3
+2.4V
DDC3 B+ REGULATOR
IC471
XRST2
B
(Page 23)
XWK1, XWK2,
XWK4
C
(Page 23)
MZ-NH700/NHF800
AOUTL
147
FROM IC801 (1/3)
(MD SERVO SECTION)
AOUTR
148
173 DIN
XMUTE/MUTE 212
PF3/RTG3 211
SDT0
7 307 ADDT
MCLK 9 306 FS256 BEEP 199
BCLK 8 309 XBCK
DTCK 313
LRCK 10 308 LRCK
PDN RMC_KEY 131
14 190 XPD_ADC
RADIO_ON 134
CDTI
11
CCLK
12
CSN 13 189 XCS_ADC
UDP 314
UPUEN 318
UDM 315
+1.2V
REGULATOR REG1 B+
IC302
200 XOPT_CTL
185 OPT_DET
186 XJACK_DET
187 XMIC_DET
WAKE UP SWITCH
193 USB_WAKE
Q803
REG VSTB B+
128 133 213 214 215 236 124 125
LCD
MODULE
REFERENCE VOLTAGE
SWITCHING
HEADPHONE
Q351
AMP
IC352
13
VREF_IN
22 INA OUTA 2
BEEP_OUTA
24
21 INB OUTB 4
BEEP_OUTB
23
RVDD
VB
17 18 15
3
DATA+
CN451
2
DATA– (USB)
1
VBUS
SYSTEM CONTROLLER,
DIGITAL SIGNAL PROCESSOR
IC801 (2/3)
248 249 227 183 192 135
RESET
DDC3 B+
SWITCH
VB B+
Q471
S892
HALF
LOCK
22 22
• SIGNAL PATH
J352
i
F351
RVDD
F1
VB
DTCK
KEY-R
STAT
RGND
RMC KEY
D (Page 23)
VBUS
E (Page 23)
X801 X802
48MHz 22.5792MHz
319 320 310 311
SI0 195
SO0 196
SCK0 197
XCS_NV 239
188 184 253
–1 –2
S893 S894–1 S894–2
OPEN/CLOSE PROTECT Hi-MD
DETECT DETECT PROTECT
DETECT
: PLAYBACK
: OPTICAL IN
: LINE IN
: USB input from PC
: USB output to PC
: MIC IN
EEPROM
IC892
4 DO
3 DI
2 SCK
1 XCS
SDO0, SCK0
F
(Page 23)