Panasonic RM-G45PA User manual

© 2001 Matsushita Electric Industrial Co., Ltd. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
RM-G45PA
Colour
(K)...........Black Type
Area
(A)...........U.S.A.
Audio System
AVCASBU0111002C1

1 Location of Controls 3
2 Disassembly Instructions 4
2.1. Removal of the main P.C.B. and sub (1) P.C.B. 4
2.2. Removal of the operation P.C.B. 4
2.3. Removal of the rubber contact, illuminator and buttons 6
2.4. Removal of the lamp 6
3 Schematic Diagram Notes 7
4 Schematic Diagram 8
5 Printed Circuit Board Diagram 17
6 Type Illustration of ICs and Diodes 23
7 Wiring Connection Diagram 24
8 Block Diagram 25
9 Modification of RM-G45PA for European/Australian/Japanese
Version 30
9.1. Modification Detail 30
9.2. Modification Printed Circuit Board 31
10 Terminal Function of IC 32
10.1. IC503(000874710): System Control 32
11 Replacement Parts List 33
12 Cabinet Parts Location 37
CONTENTS
Page Page
2
RM-G45PA

1 Location of Controls
<Front side>
1Preset channel (1) button
2Audio button
3Preset channel (2) button
4CB button
5I-COM button
6Preset channel (5) button
7A.SEL RPT/RDM button
8Preset channel (6) button
9Preset channel (3) button
:Volume knob
;FM1 button
<CD button
=AM button
>FM2 button
?AUX button
@WB button
AMODE knob
BPreset channel (4) button
<Rear side>
1. FL (+)
I/O connector I/O connector
2. FL (-)
3. FR (+)
4. FR (-)
5. RR (+)
6. RR (-)
7. DISP GND
8. DISP SO
9. DISP SCK
10. RL (+)
11. RL (-)
12. HS OUT L(P)
13. HS OUT L(D)
14. SW GND
15. SW K13
16. SW K11
17. DISP CE
18. HS OUT R(P)
19. HS OUT R(D)
20. HS OUT E(P)
21. HS OUT E(D)
22. SW KS1
23. SW KS2
24. SW KS3
25. DISP REQ
26. GND (MAIN)
27. HS MIC DR
28. HS MIC PA
29. HS MIC E(D)
30. HS MIC E(P)
31. SW K14
32. SW K12
33. VBAT (ACC)
34. BU
1. AUX L
2. BUS L (-)
3. BUS L (+)
4. BUS R (-)
5. BUS R (+)
6. BUS (-)
7. BUS (+)
8. BUS SYS ACC
9. BUS +B
10. AUX R
11. BUS AUDIO GND
12. BUS GND
13. BUS GND
14. BUS ILLUMI
15. NC
16. NC
17. MUTE IN
18. AUX GND
19. PULSE
20. CB AUDIO MUTE
21. CB PERM
22. CB DET
23. CB SHIELD
24. CB MIC OUT
25. CB MIC GND
26. STARTER (MUTE)
27. CB STARTER (MUTE)
28. CB AUDIO GND
29. CB AUDIO IN
30. CB RST
31. CB PTT
32. CB SO
33. CB SI
34. CB SCK
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
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
AUDIO CB I-COM A.SEL
RPT/RDM
12345 6
FM1 FM2 WB
AUX
CD AM
MODEVOLUME
1234 5678
9
:
;=>?@
A
B
<
3
RM-G45PA

[Repair Advisory]
Prior to any repair, use the air gun to prevent the panel
buttons from being damaged by dust and sand particles.
2.1. Removal of the main P.C.B.
and sub (1) P.C.B.
2.2. Removal of the operation
P.C.B.
2 Disassembly Instructions
4
RM-G45PA

5
RM-G45PA

2.3. Removal of the rubber
contact, illuminator and
buttons
• Follow the (Step 1) -(Step 5) of item 2.2.
2.4. Removal of the lamp
• Follow the (Step 1) ,(Step 2) of item 2.2.
6
RM-G45PA

• This schematic diagram may be modified at any time
with the development of new technology.
Notes:
S602: Mode switch (MODE)
S603: Volume mode switch (V MODE)
S651: Audio switch (AUDIO)
S652: CB select switch (CB)
S653: Preset channel 1 switch (CH1)
S654: Preset channel 2 switch (CH2)
S655: Preset channel 4 switch (CH4)
S656: Preset channel 5 switch (CH5)
S658: I-com switch (I-COM)
S659: Auto select/repeat switch (A.SEL/RPT)
S660: Preset channel 3 switch (CH3)
S661: Preset channel 6 switch (CH6)
S662: FM1 select switch (FM1)
S663: FM2 select switch (FM2)
S664: Weather band select switch (WB)
S665: Aux switch (AUX)
S666: AM select switch (AM)
S667: CD select switch (CD)
• Indicated voltage values are the standard values for the unit
measured by the DC electronic circuit tester (high-
impedance) with the chassis taken as standard. Therefore,
there may exist some errors in the voltage values,
depending on the internal impedance of the DC circuit
tester.
No mark : FM
() :AM
<> :WB
• Important safety notice:
Components identified by mark have special
characteristics important for safety.
Furthermore, special parts which have purposes of fire-
retardant (resistors), high-quality sound (capacitors), low-
noise (resistors), etc. are used.
When replacing any of components, be sure to use only
manufacturer’s specified parts shown in the parts list.
• The supply part number is described alone in the
replacement parts list.
• Voltage and signal line
: Positive voltage line
: FM signal line
: FM/AM OSC signal line
: AM signal line
: WB signal line
: WB OSC signal line
: FM/AM/WB Vcap cont. signal line
: Main signal line
Caution!
IC and LSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
Cover the parts boxes made of plastics with aluminum foil.
Ground the soldering iron.
Put a conductive mat on the work table.
Do not touch the legs of IC or LSI with the fingers directly.
3 Schematic Diagram Notes
7
RM-G45PA

4 Schematic Diagram
MAIN CIRCUIT
A
Z1
(FM/AM TUNER PACK)
1 2 3 84 5 6 7 9 10 11 12 13 14 15 16
ANT CN1
R14 10K
AM ANT
FM ANT
GND
VT
VDO
FM VCC
OSC
GND
SEEK/IFC
SD/ST
AM OSC2
SM
L OUT
R OUT
DET OUT
AM IF
R8
3.3K
C10
0.01
DSP1
R1 100
C1 0.022 C2 0.1
R2 10
C3
10V100
C4 0.1
D2
DI0MA111L
D1
DI1SV271L R9 3.3K
D3
DI1SV271L
C6
0.047
C7 0.018
C8 0.018
TP1
ANT
GND
VDD
VT
OSC
GND
SD
AF OUT
1
2
8
7
6
5
4
3
Z2
(WB TUNER PACK)
10
IC1
0005749000-T
20 19 18 17 16 15 14 13 12 11
1 2 3 4 5 6 7 8 9
R5
3.3K
R12
2.2K
C11
25V1 R13 1.2K
C12
0.001
Q1
2SK1829
C14
16V47
C9
10V100
R32
100K
R3 47
C13 0.047
R11
100
R21
100 D5
DI0MA111L
R6
10K
Q3
TRC1037QL
R24
220K
R22 1K
C23 16V10
C22 0.01
R23 100
C26 330P
R31 0
C24
27P
C25
27P
X1
(7.2MHz)
R26 1K
R27 1K
R28 470 R29 470
D6 DI0MA111L
C17
10V100
C18
16V10
R7
47K
R33 100K
C19
16V10
XO
GND
PD
VDD
FM/AM
10K OSC
WB/AM
9K OSC
SD/ST
FM/AM IFC
XI
CE
DI
CLK
DO
SEEK
BAND FM
AM/FM
TU ON
C15
0.047
R30
2.2K R25 2.2
1
2
L1
470uH
NC
NC
CE DI CLK DO
SM
NC
S
G
D
Q1
Q2
TRC114YUL-A
SWITCHING
SWITCHING
PLL FREQUENCY
SYNTHESIZER
L.P.F.
Q4
TRB123YKL
POWER SUPPLY
Q7
TRB123YKL
POWER SUPPLY
Q5
TRB123YKL
POWER SUPPLY
Q6
TRB123YKL
POWER SUPPLY
SCHEMATIC DIAGRAM-1 Note: The number which noted at the connectors on the schematic diagram as
"SCHEMATIC DIAGRAM-1" or "SCHEMATIC DIAGRAM-2"
indicates the schematic diagram serial number located on the left corner in the schematic diagram.
1
2
3
ET1(x3)
RM-G45(PA) MAIN SCHEMATIC DIAGRAM
:FM/AM/WB V cap CONT.SIGNAL LINE
:FM/AM OSC SIGNAL LINE:POSITIVE VOLTAGE LINE :FM SIGNAL LINE :WB SIGNAL LINE :WB OSC SIGNAL LINE
0V 0V 0V 0V5.2V
(0V) 3V
(3.6V)
2.4V 8V 2V
(0V)
0V
5.8V
1.6V 5.6V (2.2V)
0V
3.6V
0V 3.6V 0V 4.2V 0V
9.2V9.2V
8V
(0V)
0V
0V
(0V)
9.2V 2V
2.8V
(9V)
9V
1.8V
(1.8V)
9.2V
0V
5V
5.4V
2.2V
0V
0V
3V
(3.6V) 2.4V
3.6V
0V
0V
0V
0V
0V
3.6V
0V
1.4V
5V 0V 0V
5.4V
2V(0V) 0V
2V
0V 0V 5V 5V 0V
0V
0V(9V)
0V(9V) 9V
9.2V
9.2V
:AM SIGNAL LINE
9.2V
(0V)
0V
9.2V
(9.2V)
1.8V
9.2V
9.2V
5V
0V
9.2V
1.4V
3V
(3.6V)
2.4V
RM-G45PA
8

C111
1R104 82K
R106 1K
R105
15K
C108
50V1 C110 50V1 C123 10V100
R121 10K
C117
50V1
C118
330P R112 82K
R113
4.7K
C119 16V10
C126
16V10
C120
0.22 R115 4.7K
C121 0.047 C107 0.047
C103
330P
C105 16V10
C101
0.033 R101 4.7K
R102
82K
C112 50V1
R114 4.7K C106 0.22
C165 0.01 C166 0.0056 C102 0.0015
C128
0.0015
C164 0.0056
C163 0.01
C129 0.0015
C127 0.0015
C104
16V10
17
16151413121110987654321
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33343536373839404142434445464748
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
64
R123
10K
C116
50V1 R122 10K
C115
50V1
R124
10K
R109 15KR110
82K
C114
1
R107
1K
R116
6.8K
C155
50V0.47
RN114
6.8K
C156
50V0.47
R119
6.8K
C158
50V0.47
RN117
6.8K
C157
50V0.47
C125
0.033
IC101
000774960
ELECTRONIC VOLUME
CD/MDL+
CD/MDL-
FML
AML
AUXL
WBL
6L
VDD
VREF
6R
AUXR
WBR
AMR
FMR
CD/MDR-
CD/MDR+
LF IN
LF
LR
LAVss
LZCLP
DVss
CL
DI
CE
MUTE
RAVss
RZCLP
TIME
RR
FR
RF IN
C64
0.033
IC2
000684180-T
AM NOISE CANCELER
C67
0.033
C66
0.033
C65
0.068
R63
12K
C62
50V0.22
C63
50V3.3
R62
100K
CONSTANT
VOLTAGE
CIRCUIT
SW2
SW1
HPF1LPF
IF
AMP
PULSE
DETECTION
DETECTION
IF AGC
LPF AF
AMP AF AGC
HPF
CONSTANT
CURRENT
CIRCUIT
CONSTANT
CURRENT
CIRCUIT
SW3 SW5
SW4
LEVEL
DETECT
CIRCUIT
PHASE
CIRCUIT HIGH PASS AMP
OR NOISE
AGC
BUFFER AMP
+
PULSE
DET.2
PULSE
DET.1
GATE
PULSE
1 2 3 45 6 7 8
16 15 14 12 11 10 913
C56
0.001
C57
0.22
R58
47K
C61
0.01
C58
0.0068
R60
120K
R59
15K
C59
0.033
C60
0.068
C53
10V100
R51
47
R56
2.7K
C55
0.022
TP2
R57
15K
C37
0.018
C38
0.018
Q18
TRC144EUL-A
SWITCHING
Q17
TRC144EUL-A
SWITCHING
CD/MDL+
CD/MDL-
FM 10K
AUX L
AUX R
CD/MDR-
CD/MDR+
CLK
DI
CE
VO L
SP L
SP R
VO R
3.4V
C51
0.001
RM-G45(PA) MAIN SCHEMATIC DIAGRAM
C124
10V100
C113
0.033
0V
0V0V
5V
4.8V
4.6V
4.8V
4.6V
4.8V
9.2V
4.8V
4.6V
4.8V
4.6V
5V
4.8V
5V
5V
4V
5V
5V
4.8V 4.8V 4.8V
0V
5V
4.8V
5V 5V 5V 5V 0V 0V
4.8V
4.4V
5V
5V
5V
5V
5V
0V
0V
0V
5V
4V
4.8V 4.8V 4.8V
5V 5V 5V 0V
4.8V
0V 5V 5V 0V 5V 5V
1.4V 0V
(1) 2.4V 8V 1V 0V 3.4V 3.4V
3.4V3.4V
3.4V
3.4V8V
2.8V
(4)
0V0V 0V 0V 0V 0V 0V 0V
0V0V 0V
0V
0V0V
0V
SCHEMATIC DIAGRAM-2 :AM SIGNAL LINE:POSITIVE VOLTAGE LINE :FM SIGNAL LINE :WBSIGNAL LINE :MAIN SIGNAL LINE
9.2V
9.2V
9.2V
5V
RM-G45PA
9

VO L
CN211
6
5
4
3
2
1
6
5
4
3
2
1
CN212
R171
3.9K
R172
22K
R174
22K
R173
3.9K
R175
3.9K
R176
22K
R178
22K
C171
50V0.33
C172
50V0.33
C173
50V0.33
C174
50V0.33 R177 3.9K
C175
16V22
Q107
TRC343TKL
R157
27K
R158
3.3K
R156
27K
R159
1K
R155
3.3K
R153
27K
R154
3.3K
R152
27K
R151
3.3K
C184
50V0.22
C182
50V0.22
C181
50V0.22
C183
50V0.22
15
14 13
12 11
9
87
65
43
21
16 17
19
21
23
25
18
20
22
24
10
C185
50V1
R187
10K
C186
10V100
R188 1K
R189 1K
C189
50V0.47
R191
10K R195
0
C187
16V22
R185
1K
R186
1K
CN101
1
3
5
6
7
8
9
10
2
4
MUTING
Q109
TRC343TKL
MUTING
Q108
TRC343TKL
MUTING
Q112
TRA114YUL-A
MUTING CONT.
Q110
TRC343TKL
MUTING
GND
STBY
Vcc
GND
SVR
RL IN
RR IN
STD/HI
GND
Vcc
MUTE
GND
TAB
RL-
RL+
FL-
FL+
FL IN
SGND
FR IN
FR+
FR-
RR+
RR-
CD
IC104
000874350
POWER AMP
D101
DIAN202KL
8
2
9
10
11
12
13
14
15
7
6
5
4
3
1
C207
10V100
C210
0.1
R218
10K
R214
1
R227
1K
R228
1K
R215
1
C211
0.1
C213
10V470
C212
10V100
C209
10V470
C208
16V470
C225
16V10
C214
16V470
C215
16V47
R216
330 C217
16V47 C220
50V1
C216
0.0039
C218
0.0039 C206
50V1
R217
330 C219 16V47
C222
50V1
C221
50V1
R221
10K
R222
10K
R223
2.7K
R224
2.7K
R219
33K
C223
16V22
D103
DIAN202KL
IC202
000774870
CB AUDIO
MIC OUT
MIC MUTE
ATT
AMB
AMB1
FM 10K
AU H/S
CB H/S
AMPON
SP
CB BEEP SP
MUTE
CB SP
VO R
SP R
SP L
BEEP
L OUT
GND
Vcc
R OUT
STBY
SMTH
RIP
RNF
RIN
SGND
LIN
LNF
AMP
MUTE
AMPON
HS
HS MUTE
POWER AMP
Q206
TRC343TKL
MUTING
Q111
TRC114YUL-A
MUTING
RL-
RL+
FL-
FL+
FR+
FR-
RR+
RR-
L OUT
R OUT
D
To AMB
CIRCUIT
(CN201) on
SCHEMATIC
DIAGRAM
- 8
B
To AMB
CIRCUIT
(CN202) on
SCHEMATIC
DIAGRAM
- 8
B
RM-G45(PA) MAIN SCHEMATIC DIAGRAM
MUTE
HS L
HS R
Q205
TRC343TKL
MUTING
Q205
SCHEMATIC DIAGRAM-3 :POSITIVE VOLTAGE LINE :MAIN SIGNAL LINE
To AMB
CIRCUIT
(CN131) on
SCHEMATIC
DIAGRAM
- 8
B
0V
0V
0V
0V
0V
0V 0V
5V
5V
5V
6V
6V
13V
13V
13V
12.8V
0V
6V
6V
6V
6V
5V
5V
6V
6V
6V
6V
6.8V
6.8V
3.4V
6.4V
12V
12V
13V
12.5V
0V
1V
1V
1V
1V
0V
0V
2.6V
5V
5V
5V
9.2V 9.2V
13V
5V
0V
0V
0V
2.6V
RM-G45PA
10