4.5.
H-Board (1 of 2) Schematic Diagram
+
PR
PB
Y
PR
AV2
V
L
C
R
R
L
Y
R
L
V
AV4
R
V
V
AV1
L
MONITOR OUT
PB
Y
+
NP
+
+
+
+
+
+
+
NP
+
+
+
+
+
+
NP
SOUND_DEF
R_OUT
AD_RSW
AE_MV
AV2_R
AC_YSW
AC_V
AV4_S
AV1_C
AV2_S
AV1_S2
AV4_R
AC_RSW
AV1_R
AC_L
AE_MR
AE_ML
AV1_Y
AV1_S
AD_L
AV2_L
MONITOROUT
AC_R
AB_R
AB_L
AB_YSW
AV2_V
AUDIOOUT_L
AUDIOOUT_R
8V
8V
HP_R
HP_L
A
V
_MUTE
AC_YSW
AC_Y
AC_PB
AC_PR
AC_L
AC_RSW
AC_R
AB_YSW
AB_Y
AB_PB
AB_PR
AB_L
AB_RSW
AB_R
AD_C
AD_Y
AD_V
AD_L
AD_RSW
AD_R
AE_MV
AE_ML
AE_MR
AD_YSW
AD_YSW
AV4_Y
AV2_PB
AV2_PR
AV4_PR
AC_Y
AC_PB
AC_PR
AB_Y
AB_PB
AB_PR
AD_V
AV4_L
AB_RSW
AV1_L
AV4_V
AB_V
AD_YSW
AV1_V
AD_Y
AD_C
AUDIOOUT_R
AUDIOOUT_L
AB_YSW
AD_C
A
C_V
HP_GND
AD_Y
AV4_PB
AV2_Y
AB_V
SUB9V
AD_R
L_OUT
C2205
16V
100u
JK3100A
TJB0A639
Y-SW
Y
G
PB
PR
V
L
R-SW
R
G
Y-SW
Y
G
PB
PR
V
L
R-SW
R
G
C
Y
G
Y-G
C-G
G
V
L
R-SW
R
G
V
L
R
G
Q3171
2SD0601A0L
C2228
10V
1u
C0ABBB000102
IC2207
1
2
3
4
5
6
7
8
C2287
50V
47p
L3108
ELESN4R7JA
R3124
22k
R2208
0
1%
R3115
75
R2261
4.7k
R2258
100
R3119
22k
C2262
10V
1u
C3120
50V
560p
C2270
16V
100u
C2215
50V
1000p
1%
R3109
75
L3100
EXC3BB221H
C2274
50V
47p
L3119
ELESN6R8KA
R3118
22k
R3147
330
R3126
330
1%
R3110
75
R3148
820
R3146
33k
D3105
MAZ30910LL
R2002
100
C2007
50V
10u
C3117
50V
560p
C3140
25V
470u
C3115
35V
47u
C3113
50V
560p
Q3102
2SD0601A0L
R3175
33k
Q2204
2SB0709A0L
R3275
470
R2283
47k
L2221
EXC3BB221H
L3103
EXC3BB221H
R2286
10k
R3188
470
R3177
33k
R2256
47k
R2282
33k
C3177
50V
10u
JS3108
ERJ6GEY0R00V
R3179
33k
R3185
82
L2029
EXCELDR35V
R3120
22k
R3184
82
JS3110
ERJ6GEY0R00V
C3112
16V
1u
R3125
22k
C2290
16V
0.1u
R2206
10k
R3178
33k
R2259
4.7k
JS3120
ERJ6GEY0R00V
JS3112
0
R2203
10k
Q2004
2SB0709A0L
L3111
EXC3BB221H
C2226
50V
0.1u
R3133
33k
R2226
2.2
R3220
82
R3122
100k
C2017
16V
0.1u
1%
R3114
75
R2220
100
R2204
0
R3189
470
C3170
35V
47u
R2253
47k
L2220
EXC3BB221H
C3171
50V
10u
R2201
47k
R2007
4.7k
C3123
50V
560p
C2202
50V
10u
L3104
EXC3BB221H
R3117
22k
R3186
82
Q2203
2SB0709A0L
R3143
1k
C2214
50V
1000p
L3102
EXC3BB221H
R3187
470
R3130
1k
R3222
82
L2200
ELJPA470KF
1%
R3111
75
R2296
27k
L2207
EXCELDR35V
C2273
10V
1u
R2207
10k
C2212
16V
2.2u
C2201
50V
10u
R3137
10k
1%
R3121
75
C2222
50V
0.1u
R2250
10k
Q2202
2SD0601A0L
C3114
50V
560p
C2271
16V
0.1u
R2200
47k
R2205
0
R2006
4.7k
R3174
33k
Q3101
2SD0601A0L
R2251
10k
R3149
820
R3134
33k
C2276
50V
0.01u
C2225
50V
0.1u
JS3111
ERJ6GEY0R00V
C2203
16V
1u
Q3100
2SB0709A0L
AN17880A-E1
IC2200
1
Ripple Filter
2
CAMP_SW
3
VCC
4
OUT_2
5
CAMP_OUT
6
OUT_1
7
OUT_GND
8
IN_1
9
IN_2
10
IN_GND
11
Beep_IN
12
Mute_T
13
Mute
14
Standby
15
Bias Output
16
Bias input
H9
1
2
3
4
5
6
C2204
16V
10u
JS3107
0
JS3113
ERJ6GEY0R00V
C3116
50V
10u
C3139
16V
0.1u
C3121
25V
470u
L3109
EXC3BB221H
R3145
33k
JS3121
ERJ6GEY0R00V
C3175
16V
0.1u
C2275
50V
47p
IC2001
AN77L08M-E1
IN
3
2
COM
OUT
1
R3221
82
R3150
10k
R3132
33k
C3132
50V
10u
R2209
0
R3176
33k
C3109
16V
0.1u
R3123
100k
C3108
16V
0.1u
R2260
100
R3151
10k
1%
R3108
75
C2213
16V
2.2u
L3106
EXC3BB221H
R2221
100
C3119
50V
560p
L3101
EXC3BB221H
R2211
100
C3176
16V
0.1u
R2210
100
C2011
25V
470u
R2245
10k
R2001
100
R2279
33k
R3277
470
Q3170
2SD0601A0L
C3172
50V
10u
Q2003
2SB0709A0L
C2289
16V
100u
R3276
470
1%
R3107
75
C2286
50V
0.01u
R3127
33k
R2225
2.2
Q3172
2SD0601A0L
L2222
EXC3BB221H
1%
R3104
75
D2001
MA3X152K0L
C2207
25V
0.22u
L2028
EXCELDR35V
JS2227
0
L3107
EXC3BB221H
C2010
16V
0.1u
C2272
10V
1u
R2295
47k
1%
R3112
75
C0ABBB000102
IC2206
1
2
3
4
5
6
7
8
Q3174
2SD0601A0L
C3122
50V
560p
JS3114
ERJ6GEY0R00V
JS3118
0
C2008
50V
10u
R2284
27k
C3118
50V
560p
R2222
2.2
R2254
33k
Q3173
2SD0601A0L
R3106
100k
JS3115
ERJ6GEY0R00V
C3126
16V
0.1u
C2288
50V
47p
C3174
16V
0.1u
L3105
EXC3BB221H
1%
R3113
75
Q3175
2SD0601A0L
R3116
1k
L3110
EXC3BB221H
JS3142
0
JS3101
0
JS3100
JS3102
JS3103
JS3104
JS3105
D2210
MAZ30360HL
JS3141
0
R2257
33k
1%
R3105
75
AV2
AV4
AV1
AUDIO OUT
VCC
L
R
GND
VCC
L
R
GND
AV
1
AV
2
AV
4
8
1
7
3
D
2
F
5
4
C
B
E
9
A
6
!
H-BOARD (1/2)
TO
(K9)
K-BOARD
HP AMP
AMP
AMP
AVR 8V
10
1
11
9
14
13
12
7
8
5
6
4
2
3
TNPA2949AB(FOR TH-42PA20M/H/R)
TNPA2949AC(FOR TH-42PA20A)
TNPA2949AD(FOR TH-42PA20F)
<
TH-42PA20A/F/M/H/R H-BORAD (1 of 2) Schematic Diagram
TH-42PA20A/F/M/H/R H-BORAD (1 of 2) Schematic Diagram
29
Summary of Contents for TH-42PA20A
Page 11: ...6 Mechanical Replacement Parts List 9 ...
Page 14: ...7 2 Electrical Replacement Parts List 12 ...
Page 48: ...R408 ERJ6GEYJ6R8 M 6 8 OHM J 1 10W 1 46 ...
Page 52: ...R1075 ERJ3GEYJ102 M 1KOHM J 1 16W 1 50 ...
Page 76: ...S300 K0F162B00002 SWITCH 1 74 ...
Page 191: ...2 Service Hint 7 TH 42PA20A TH 42PA20F TH 42PA20H TH 42PA20M TH 42PA20R ...
Page 192: ...8 TH 42PA20A TH 42PA20F TH 42PA20H TH 42PA20M TH 42PA20R ...