Sony PHA-2 Service Manual ▷ View online
PHA-2
PHA-2
17
17
3-8. SCHEMATIC DIAGRAM - MAIN Board (6/7) -
• Described to the reference for US and Canadian models.
RESET
CHG_D-
MUTE
CHG_D+
LINE_SEL_IN
POWER_LED
CHARGE_LED
XMOS_BUS_SEL2
XMOS_RESET
VBUS_EN_CHG
CHG_STA
PWR_ON
TOOL0
PWR_ON
INPUT_SELECT
TEMP_CHECK
BATTERY_CHECK
LDO_EN
DCDC_EN_2
DCDC_EN_1
POWER_DELAY
XMOS_PS_SUS_STA
REGC
CHG_CE
CHG_EN2C
CHG_EN1C
POWER_SW_IN
POWER_SW_IN
LOW_BAT
PWR_ON
CHG_PGOOD
ANALOG_DIGITAL_SEL
LINE_OUT_EN
LINE_AMP_SEL
LINE_SEL_IN
VBUS_OFF
VBUS_OFF
TEST_MODE_IN
XMOS_INPUT_SELECT500100
XMOS_INPUT_SELECTAB
XMOS_ENU_STA
POWER_SW_IN
+3.3VD
PGND
USB_+5VD
TEMP_CHECK
CHARGE_LED
POWER_LED
CHG_CE
CHG_EN2C
CHG_EN1C
INPUT_SELECT
BATTERY_CHECK
POWER_DELAY
DCDC_EN_1
DCDC_EN_2
LDO_EN
CHG_STA
POWER_SW_IN
XMOS_PS_SUS_STA
XMOS_ENU_STA
MUTE
CHG_D+
CHG_D-
+3.3VU
XMOS_INPUT_SELECTAB
XMOS_INPUT_SELECT500100
VP
PWR_ON
CHG_PGOOD
ANALOG_DIGITAL_SEL
LINE_OUT_EN
LINE_AMP_SEL
XMOS_BUS_SEL2
VBUS_EN_CHG
V_BUS
+3.3VD
+3.3VD
+3.3VD
+3.3VD
+3.3VU
+3.3VD
USB_+5VD
USB_+5VD
+3.3VD
+3.3VU
VP
VP
VP
+3.3VD
VP
+3.3VD
+3.3VD
V_BUS
V_BUS
1
2
R0402
R0402
1
2 R0402
R0402
1
2 R0402
R0402
1
2 C0402
C0402
1
2
R0402
R0402
1
2
R0402
R0402
12
L0402(
1005)
L0402(
1005)
1
2
R0402
R0402
12
L0402(
1005)
L0402(
1005)
2
13
TR_VMT3
TR_VMT3
1
2
R0402
OPEN
R0402
OPEN
1
2
R0402
R0402
1
2 R0402
OPEN
R0402
OPEN
1
2
R0402
R0402
1
2
R0402
OPEN
R0402
OPEN
2
13
TR_VMT3
TR_VMT3
4
3
1
2
TR_UMT4
TR_UMT4
1
2 R0402
R0402
1
2
R0402
R0402
1
2
R0402
R0402
1
2
3
4
8
7
9 10
SW4H_9.7X2.6_54
SW4H_9.7X2.6_54
1
2
R0402
R0402
1
2
R0402
R0402
1
2
C
0603
C
0603
1
2
C
0402
C
0402
1
2
DIO_EMD2
DIO_EMD2
1
2
R0402
OPEN
R0402
OPEN
1
2
R0402
R0402
1
2
C
0603
C
0603
1
2
1 2 3 4 5 6 7 8 9 10 11 12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
PLCC48_0.22_0.5_131
PLCC48_0.22_0.5_131
1
2
R0402
R0402
1
2
R0402
R0402
1
2
R0402
R0402
1
2
R0402
R0402
1
2
R0402 OPEN
R0402 OPEN
1
2
C0603
C0603
1
2
3
4
TR_UMT4
TR_UMT4
1
2
C
0402
C
0402
1
2
R0402
R0402
1
2
C
0603
C
0603
1
2
R0402
R0402
1
2
R0402
R0402
1
2
R0402
R0402
1
2
R0402
R0402
12
L0402(
1005)
L0402(
1005)
1
2
R0402
R0402
1
2
R0402
R0402
1
2
C
0402
C
0402
1
2
1
2
C
0402
C
0402
1
2
DIO_EMD2
DIO_EMD2
1
2
C
0402
C
0402
1
3
2
4
SW4H_3.55X3.5_54
G2405-0267-00
SW4H_3.55X3.5_54
G2405-0267-00
1
2
R0402
R0402
1
2
R0402
R0402
1
2 R0402
R0402
12
1
2
C
0402
C
0402
1
2
LED_2(27-21)_189
OPEN
LED_2(27-21)_189
OPEN
1
2
R0402
R0402
1
2
C
0402
C
0402
2
13
TR_VMT3
TR_VMT3
1
2
C
0603
C
0603
1
2
R0402
R0402
1
2
R0402
R0402
1
2
C
0402
C
0402
1
2
R0402
R0402
1
2
R0402
OPEN
R0402
OPEN
12
L0402(1005)
L0402(1005)
1
2
1
2
R0402
R0402
1
2
C
0402
C
0402
1
2
R0402
R0402
1
2
1
2
R0402
R0402
1
2
C
0402
C
0402
1
2
R0402
OPEN
R0402
OPEN
1
2
C
0603
C
0603
1
2
1
2
C0402
OPEN
C0402
OPEN
1
2
C
0603
C
0603
1
2
R0402
R0402
1
2
R0402
R0402
1
2
3
4
6
5
TR_TUMT6
TR_TUMT6
1
2
R0603
R0603
1
2 R0402
R0402
1
2
C
0402
C
0402
VDD
VOUT
CE
GND
P60/
SC
LA
0
P61/
SD
AA
0
P6
2
P6
3
P31/
TI
03/
TO03/
IN
TP
4
P75/
KR
5/
IN
TP
9/
SC
K01/
SC
L01
P74/
KR
4/
IN
TP
8/
SI
01/
SD
A01
P7
3/
KR
3/
SO
01
P72/
KR
2/
(TI
02)/
(TO02)
P71/
KR
1/
(TI
01)/
(TO01)/
(IN
TP
5)
P7
0/
KR
0
P30/
IN
TP
3/
RTC1HZ/
SCK
00/
SCL00
P50/INTP1/SI00/RxD0/TOOLRxD/SDA00
P51/INTP2/SO00/TxD0/TOOLTxD
P17/TI02/TO02
P16/TI01/TO01/INTP5
P15/PCLBUZ1
P14
IC
IC
UVDD
UVBUS
UDM0
UDP0
P27/
AN
I7
P26/
AN
I6
P25/
AN
I5
P24/
AN
I4
P23/
AN
I3
P22/
AN
I2
P2
1/
AN
I1
/AVR
EFM
P2
0/AN
I0
/AVR
EFP
P130
P01/
TO00/
(S
CLA
0)
P00/
TI
00(S
D
AA
0)
P140/
PC
LB
UZ0/
IN
TP
6
P120/ANI19
P41/(TI03)/(TO03)/(INTP4)/(PCLBUZ1)
P40/TOOL0
RESET
P124/XT2/EXCLKS
P123/XT1
P137/INTP0
P122/X2/EXCLK
P121/X1
REGC
VSS
VDD
GND
VDD
CD
OUT
CLK
GND
D
Q
CLR
VCC
R339
*100K
R339
*100K
R275
0
R275
0
R348
*100K
R348
*100K
TP4
TP4
C222
0.01UK_25V_X7R
C222
0.01UK_25V_X7R
R272 *10K
R272 *10K
R305
*100K
R305
*100K
RV12
TVM
0x
0x
x
RV12
TVM
0x
0x
x
R266 0
R266 0
RV14
TVM
0x
0x
x
RV14
TVM
0x
0x
x
Q24
2SK3541T2L
Q24
2SK3541T2L
R290 0
R290 0
TP14
TP14
R285 0
R285 0
R273
*100K
R273
*100K
R181
*100K
R181
*100K
R323
*4.7K
R323
*4.7K
Q17
2SK3541T2L
Q17
2SK3541T2L
U60
MM3411A33URE
U60
MM3411A33URE
R269
*1M
R269
*1M
TxD_0
TxD_0
R349 *51K
R349 *51K
R319 0
R319 0
TP17
TP17
SW3
SSSS810201
SW3
SSSS810201
R342
0
R342
0
R155
*1M
R155
*1M
C241
2.2U
K_16V_X5R
K_16V_X5R
C241
2.2U
K_16V_X5R
K_16V_X5R
C171
0.1U
K_16V_X5R
K_16V_X5R
C171
0.1U
K_16V_X5R
K_16V_X5R
D14
CH521S-30
D14
CH521S-30
R188
*10K
R188
*10K
R184
*100K
R184
*100K
C239
1U
K_16V_X5R
C239
1U
K_16V_X5R
R149
*10K
R149
*10K
U34
R5F10KGCAFB
R5F10KGCAFB
U34
R5F10KGCAFB
R5F10KGCAFB
R186
*10K
R186
*10K
R154 *100K
R154 *100K
R153 0
R153 0
R277 *10K
R277 *10K
R325 0
R325 0
C223
2.2UK_10V_X5R
C223
2.2UK_10V_X5R
U53
PST8431UR_3.1V
U53
PST8431UR_3.1V
C155
0.1U
K_16V_X5R
K_16V_X5R
C155
0.1U
K_16V_X5R
K_16V_X5R
R291 *150K
R291 *150K
C153
4.7U
K_10V_X5R
K_10V_X5R
C153
4.7U
K_10V_X5R
K_10V_X5R
R182
*100K
R182
*100K
R340
*100K
R340
*100K
TP122
TP122
R326 0
R326 0
R170
*100K
R170
*100K
RV13
TVM
0x
0x
x
RV13
TVM
0x
0x
x
RxD_0
RxD_0
TP85
TP85
R265
*200K
R265
*200K
R318 0
R318 0
C151
0.1U
K_16V_X5R
K_16V_X5R
C151
0.1U
K_16V_X5R
K_16V_X5R
R145
*10K
R145
*10K
C168
0.1U
K_16V_X5R
K_16V_X5R
C168
0.1U
K_16V_X5R
K_16V_X5R
D7
CH521S-30
D7
CH521S-30
C218
0.01U
K_25V_X7R
C218
0.01U
K_25V_X7R
SW2
SKSCPBE010
SW2
SKSCPBE010
R336
*100K
R336
*100K
R294 0
R294 0
TOOL0_0
TOOL0_0
R327
*100
R327
*100
RV17
TVM0xx
RV17
TVM0xx
C150
1UK_10V_X5R
C150
1UK_10V_X5R
LED6 27-21/G6C-GM1N2/3C
LED6 27-21/G6C-GM1N2/3C
R152 0
R152 0
C170
0.1U
K_16V_X5R
K_16V_X5R
C170
0.1U
K_16V_X5R
K_16V_X5R
Q15
2SK3541T2L
Q15
2SK3541T2L
C156
4.7U
K_10V_X5R
K_10V_X5R
C156
4.7U
K_10V_X5R
K_10V_X5R
R180
*100K
R180
*100K
R183
*100K
R183
*100K
C2171U
K_10V_X5R
C2171U
K_10V_X5R
R278 *1M
R278 *1M
R268
*10K
R268
*10K
RV16
TVM0xx
RV16
TVM0xx
RESET_0
RESET_0
R146
*1K
R146
*1K
TP81
TP81
TP54
TP54
R271
*1M
R271
*1M
C154
0.1U
K_16V_X5R
K_16V_X5R
C154
0.1U
K_16V_X5R
K_16V_X5R
R337
*100K
R337
*100K
TP84
TP84
R270 *1K
R270 *1K
R185
*100K
R185
*100K
TP18
TP18
C169
0.1U
K_16V_X5R
K_16V_X5R
C169
0.1U
K_16V_X5R
K_16V_X5R
R187
*10K
R187
*10K
C225
1U
K_16V_X7R
C225
1U
K_16V_X7R
R148
*10K
R148
*10K
C224
1000PF_50V_X7R
C224
1000PF_50V_X7R
C242
0.1U
K_16V_X7R
K_16V_X7R
C242
0.1U
K_16V_X7R
K_16V_X7R
R338
*100K
R338
*100K
R284 0
R284 0
U52
SN74LVC1G175DCKR
U52
SN74LVC1G175DCKR
R267 0
R267 0
R274
*10K
R274
*10K
C157
0.01U
K_25V_X7R
C157
0.01U
K_25V_X7R
GREEN
GREEN
A
3
6
E
2
D
5
B
C
7
1
4
(6/7)
MAIN BOARD
F
19
PHA-2
SECTION 4
EXPLODED VIEWS
1
9-885-191-20 CASE
ASSY
2
9-885-191-28 SCREW
M1.7X5
3
9-885-176-49 GAIN,
SW-GUIDE
4
9-885-191-29 BUMPER,
FRONT
5
9-885-176-48 KNOB,
VOL
ASSY
6
9-885-191-21 SHEET BLIND SCREW
7
9-885-176-59 SCREW,
M1.7-2.5
8
4-151-758-01 SCREW
TP1.4
L3.5
9
9-885-176-61 SCREW,
M1.7-3.5
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
Note:
• -XX and -X mean standardized parts, so
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Items marked “*” are not stocked since
they are seldom required for routine ser-
vice. Some delay should be anticipated
when ordering these items.
vice. Some delay should be anticipated
when ordering these items.
• The mechanical parts with no reference
number in the exploded views are not sup-
plied.
plied.
• Color Indication of Appearance Parts Ex-
ample:
KNOB, BALANCE (WHITE) . . . (RED)
Parts Color Cabinet’s Color
4-1. CASE SECTION
• Rear bottom view
not supplied
not supplied
not supplied
5
4
4
2
2
8
2
2
3
3
2
2
1
2
6
7
2
MAIN board section
8
9
9
not supplied
20
PHA-2
4-2. MAIN BOARD SECTION
51
9-885-191-25 SHEET
INSULATION
52
9-885-192-30 SCREW,
TP1.7-3.5-A0.3-D2.5
53
9-885-191-22 MAIN BOARD, COMPLETE
54
9-885-191-26 FRAME
ASSY
55
9-885-191-24 SW BOARD, COMPLETE
56
4-151-758-01 SCREW
TP1.4
L3.5
57
9-885-192-29 SHEET,
JACK
58
9-885-193-87 INSULATING
SHEET
BT1
9-885-191-27 LITHIUM ION BATTERY PACK ASSY
JC1
9-885-176-52 JACK, STEREO MINI (AUDIO IN/LINE OUT)
JC2
9-885-176-52 JACK, STEREO MINI (PHONES)
JC4
9-885-176-54 USB CONNECTOR (TYPE-A)
(DIGITAL IN (iPod/iPhone/iPad))
R26
9-885-176-53 VOLUME 10K/10K (Including WASHER, NUT)
(POWER/VOLUME)
SW1
9-885-176-55 SWITCH, SLIDE (1-1-2) (GAIN (NORMAL/HIGH))
SW3
9-885-176-55 SWITCH, SLIDE (1-1-2)
(OUTPUT SELECT (PHONES/LINE OUT))
SW301
9-885-191-23 SWITCH, SLIDE (1-1-4)
(INPUT SELECT (AUDIO IN/DIGITAL IN))
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
SW3
JC4
SW
board
SW301
SW1
JC2
BT1
JC1
R26
54
55
56
53
52
52
52
52
51
52
57
57
MAIN board
B
A
B
A
58
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