Service manual

Schematic Diagrams
CODEC (71-P2970-002A) B - 25
B.Schematic Diagrams
CODEC
Sheet 24 of 28
CODEC
+3V
+2.25VREF
+3V
+3V
SB3V
+5V
+5V
+A5V
SB3V
+12V
+3V
PC_BEEP Z2406
PHONE
CVIDEO-L
Z2420
CAUX-R
Z2416
CBIT_CLK
Z2407
Z2415
Z2408
Z2417 Z2413 Z2418
Z2402
Z2419
MONO_OUT
PHONE
Z2435
Z2434
Z2432
Z2433
Z2437
Z2438
Z2440
Z2439
Z2441
Z2444
Z2410
Z2409
Z2412
Z2411
Z2430
Z2423
Z2424
Z2425
Z2429Z2428
Z2404
CLINE-OUT-L
CLINE-IN-L
CMIC-IN
CLINE-IN-R
Z2401
Z2414
Z2427
Z2426
Z2422
CVIDEO-R
CLINE-OUT-R
MONO_OUT
Z2405
Z2403
Z2445
Z2443
Z2442
Z2436
CMIC2
Z2421
Z2446
Z2431
PC_BEEP
CLINE-IN-L
CLINE-IN-R
CMIC-IN
CLINE-OUT-L
CLINE-OUT-R
CMIC2
CAUX-L
CAUX-R
CVIDEO-L
CVIDEO-R
TZ2401
TZ2402
TZ2403 TZ2404 TZ2405 TZ2406 TZ2407 TZ2408
Z2448
Z2447
CAUX-L
Z2450
Z2449
C268 0.47u
C269 0.47u
CB12 2.2u_0805
Y4
24.576MHz_R
S1
SHORT
21
CB5 1u
R427 0_R
CB3 1u
CB4 1u
R193
0
R539
56K
R195 1K
R538
56K
R194 1K
C248 18p_R
R503
1M_R
R172 0_R
C118
1u_R
CA100
0.1u
CP40
10p_R
CN33
MODEM CON.
1
2
3
CN23
RJ-11
1
2
XP
XN
R511 33
R516 33
RT1
R2010_R
L34 LF BK2125HM121
CA134
0.1u
CF9
4.7u/16V_1206
U33
ALC202
9
7
1
4
25
26
38
42
12
24
23
21
22
20
18
19
17
16
15
14
13
37
36
35
29 30 31 32 28 27
2 3
11
5
8
10
6
46 45
47 39 40
33 34
48
41 43 44
DVDD2
DVSS2
DVDD1
DVSS1
AVDD1
AVSS1
AVDD2
AVSS2
PC_BEEP
LINE_IN_R
LINE_IN_L
MIC1
MIC2
CD_R
CD_L
CD_GND_REF
VIDEO_R
VIDEO_L
AUX_R
AUX_L
PHONE
MONO_OUT
LINE_OUT_R
LINE_OUT_L
AFILT1 AFILT2 CAP1/VRAD CAP2/VRDA VREFOUT VREF
XTAL_IN
XTAL_OUT
RESET#
SDATA_OUT
SDATA_IN
SYNC
BIT_CLK
ID1# ID0#
EAPD
HP_OUT_L
HP_OUT_C/NC
CAP3/CAP1 CAP4/NC
SPDIFO
HP_OUT_R
JD/SDIN1/GPIO0
TEST1/GPIO1
CT67
10u/10V_1206
CB10
1u_0805_R
U29
AMC7630_R
1
2
3
8
5
6
7
4
V_in
GND
GND
V_out
GND
GND
GND
ENABLE
CF10
4.7u/16V_1206
CA276
0.1u_R
C132 0.22u
C131 0.22u
C139 0.22uR179 0
C258 0.22u
R166
0
L48 BEAD BK2125HS601 600ohm_0805
CA268
0.1u
C266 0.22u
CA126
0.1u
CA140
0.1u
C229
0.022u
CP42
10p
CF11
4.7u/16V_0805
CA125
0.1u
CA123
0.1u
R153 1K
CB13
1u
R152
220K
CA270 0.1u
R174 33
R167 33
CA138
0.1u
CB2
1u
C108
0.22u
R425 0
R429 33
CB11 2.2u_0805
R426 33 R428 33
R540 1K
C256
1000p
R544
1K
R182 10K
C117
0.01u_R
CB15 2.2u_0805
C109
680p_R
R190
10K
Q43
2N3904
B
E
C
C267
1u_R
C260
0.047u_R
C261
0.047u_R
C259
0.047u_R
C252
1000p
CP43
10p
C247 18p_R
R160
0
C120
27p
CA127
0.1u
CP5
10p
R476 0_0805
C305
1u
L33 LF BK2125HM121
C304
1u
R154 0_R
C307
1u_R
R156 0_R
C306
1u_R
R180
1K
R477 0_0805_R
R595 100
CA146
0.1u
R437
1K
U24C
74HC32
9
10
8
147
R596 100
T80
T77
T75
CA245
0.1u
CA239
0.1u
CN8
MDC CON.
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29 30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
MONO_OUT
GND
AUXR
AUXL
CDGND
CD_R
CD_L
GND
3.3V
GND
3.3V
SDATA_O
RESET#
GND
MCLK BCLK
GND
SDATA_INA
SDATA_INB
SYNC
GND
VCC
P_DN
R_D
R_D
VCC
GND
R_D
MONO_PHONE
AUDIO_PD
R438 10K_R
R439 0
T83
T81
T79
T78
T76
T82
C112 0_C
C265 0.047u_R
C264 0.047u_R
C113 680p_R
C111 680p_R
C263 0.22u
C262 0.047u_R
R176
10K
R435
10K_R
C257
2200p
PHONE[19]
BIT_CLK[15]
AC_SDOUT[15]
AC_SYNC[15]
AC_SDIN2[15]
AUDIO-L [21]
AUDIO-R [21]
CD-GND [21]
+3V [3,4,5,6,11,12,13,14,15,16,17,19,20,21,22,23,26,27,28]
+5V [4,11,12,13,14,16,17,19,21,22,23,25,26,27,28]
+A5V [25]
AC_SDOUT[15] AC_SDIN1 [15]
CBIT_CLK
AC_SYNC [15]
+2.25VREF [25]
ICHSPK[14]
SPKROUT#[17]
MIC-IN [25]
LINE_IN-L [25]
HPHONE-L [25]
LINE_IN-R [25]
HPHONE-R [25]
MONO_OUT[19]
AC_RESET#[15]
AC_RESET#[15]
+12V [12,13,16,17,22,25,26,27,28]
SB3V [14,15,16,19,20,22,23,26]
ALC650 [4]
MIC2 [25]
MUTE[22]
PC_BEEP
AC_SDIN0 [15]
VIDEO-L [16]
VIDEO-R [16]
AGND
AGND
Near CODEC
AGND
AGND
AGND
MDC ( SOFEWARE MODEM )
MODEM
AGND
AGND
AGND
AGND
AGND
PIN(NC3,NC4,NC5,NC6,NC7,NC8)=GND
If 14.318M External CLK is used
AGND