Service
Manual
RX300
ORDER NO.
CRT2496
AUDIO SYSTEM POWER AMPLIFIER
VEHICLE |
DESTINATION |
PRODUCED AFTER |
TOYOTA PART No. |
ID No. |
PIONEER MODEL No. |
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LEXUS RX300 |
USA, CANADA |
August 2000 |
86280-48050 |
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GM-8706ZT/UC |
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EUROPE |
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GM-8706ZT-91/UC |
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86280-48040 |
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GM-8306ZT/EW |
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GM-8306ZT-91/EW |
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Manufactured for TOYOTA |
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by PIONEER CORPORATION |
PUB. NO. CRT2496 |
GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
GM-8706ZT/UC, GM-8306ZT/EW
NOTE:
-The GM-8706ZT-91/UC and GM-8306ZT-91/EW are supplementary genuine part for a TOYOTA vehicle, and a Pioneer product for recycling stock.
-As for the electrical system, there is no difference between the GM-8706ZT-91/UC, GM-8306ZT-91/EW and GM8706ZT/UC, GM-8306ZT/EW.
-Supplementary model is identical to the original except for the addition of following items.
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Part No. |
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Description |
GM-8706ZT-91/UC |
GM-8306ZT-91/EW |
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Cover |
CEG1045 |
CEG1045 |
Carton |
CHG2410 |
CHG2410 |
Contain Box |
CHL4114 |
CHL4113 |
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CONTENTS
1. |
SAFETY INFORMATION............................................ |
2 |
7. |
GENERAL INFORMATION....................................... |
34 |
2. |
EXPLODED VIEWS AND PARTS LIST ...................... |
4 |
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7.1 DIAGNOSIS ....................................................... |
34 |
3. |
BLOCK DIAGRAM AND SCHEMATIC DIAGRAM .... |
8 |
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7.1.1 DISASSEMBLY......................................... |
34 |
4. |
PCB CONNECTION DIAGRAM................................ |
22 |
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7.1.2 CONNECTOR FUNCTION DESCRIPTION ...... |
35 |
5. |
ELECTRICAL PARTS LIST........................................ |
26 |
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7.2 IC ........................................................................ |
36 |
6. |
ADJUSTMENT ......................................................... |
33 |
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7.3 EXPLANATION................................................... |
39 |
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7.3.1 OPERATIONAL FLOW CHART ................. |
39 |
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7.3.2 SYSTEM BLOCK DIAGRAM..................... |
40 |
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8. |
SPECIFICATIONS ..................................................... |
41 |
2
GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
1. SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely; you should not risk trying to do so and refer the repair to a qualified service technician.
3
GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
2. EXPLODED VIEWS AND PARTS LIST
2.1 EXTERIOR (GM-8706ZT/UC)
4
GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
NOTE:
-Parts marked by “*”are generally unavailable because they are not in our Master Spare Parts List.
-Screws adjacent to mark on the product are used for disassembly.
(1)EXTERIOR SECTION PARTS LIST
Mark No. Description |
Part No. |
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Mark No. Description |
Part No. |
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1 |
Screw |
BMZ30P060FMC |
11 |
Screw(M3x6) |
CBA1393 |
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2 |
Screw |
See Contrast table(2) |
12 |
Connector(CN101) |
CKM1074 |
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3 |
Screw(M2.6x14) |
CBA1384 |
13 |
Connector(CN102) |
CKM1222 |
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4 |
Screw(M3x14) |
CBA1427 |
14 |
Bracket |
CNC7145 |
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5 |
Chassis |
CNA1938 |
15 |
Holder |
CNC7146 |
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6 |
Case |
CNB2186 |
16 |
IC(IC401) |
TDA7384 |
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7 |
86285-48030 |
See Contrast table(2) |
17 |
IC(IC503) |
TA8221AH1 |
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* |
8 |
Seal |
CNM5381 |
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* |
9 |
Heat Sink |
CNR1446 |
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10 |
Main Unit |
CWM7316 |
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(2) CONTRAST TABLE
GM-8706ZT/UC and GM-8706ZT-91/UC are constructed same except for the following:
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Part No. |
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Mark No. |
Description |
GM-8706ZT/UC |
GM-8706ZT-91/UC |
2 |
Screw |
BMZ50P060FMC |
Not used |
7 |
86285-48030 |
CNC9013 |
Not used |
5
GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
2.2 EXTERIOR (GM-8306ZT/EW)
6
GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
(1) EXTERIOR SECTION PARTS LIST
Mark No. Description |
Part No. |
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Mark No. Description |
Part No. |
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1 |
Screw |
BMZ30P060FMC |
11 |
Screw(M3x6) |
CBA1393 |
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2 |
Screw |
See Contrast table(2) |
12 |
Connector(CN101) |
CKM1074 |
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3 |
Screw(M2.6x14) |
CBA1384 |
13 |
Connector(CN102) |
CKM1222 |
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4 |
Screw(M3x14) |
CBA1427 |
14 |
Bracket |
CNC7145 |
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5 |
Chassis |
CNA1938 |
15 |
Holder |
CNC7146 |
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6 |
Case |
CNB2186 |
16 |
IC(IC401) |
TDA7384 |
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7 |
86285-48030 |
See Contrast table(2) |
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* |
8 |
Seal |
CNM5381 |
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* |
9 |
Heat Sink |
CNR1446 |
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10 |
Amp Unit |
CWM7099 |
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(2) CONTRAST TABLE
GM-8306ZT/EW and GM-8306ZT-91/EW are constructed same except for the following:
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Part No. |
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Mark No. |
Description |
GM-8306ZT/EW |
GM-8306ZT-91/EW |
2 |
Screw |
BMZ50P060FMC |
Not used |
7 |
86285-48030 |
CNC9013 |
Not used |
7
1 |
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2 |
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3 |
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4 |
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GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
A |
3.1 BLOCK DIAGRAM (GM-8706ZT/UC) |
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A MAIN UNIT |
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CN101 |
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FIX EQ |
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L801 |
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CUT |
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B.U |
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<BEEP> |
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Q221,225 |
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L- |
L+ |
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B |
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BOOST |
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Q223,227 |
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RL+ |
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BEEP |
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CN102 |
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Q141 |
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2 |
IC201 |
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POWER AMP |
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2 |
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1 |
IC203 |
1 |
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3 |
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IC101 |
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PMUTE |
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30 |
FLIN |
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5 |
FL+ |
+B |
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CDL- |
CDL+ |
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3 |
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IC104 |
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NJM2068MD |
3 NJM2068MD |
12 |
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MUTE |
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NJM2068MD |
1 |
42 |
PMJ002A |
29 |
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IC401 |
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3 |
FL- |
ACC |
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TDA7384 |
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TMUT |
EMUT |
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Q805 |
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17 |
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3 |
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TX- |
TX+ |
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Q143 |
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IC202 |
1 |
IC204 |
1 |
RLIN |
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VDT |
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2 |
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19 |
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NJM2068MD |
3 NJM2068MD |
15 |
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stby |
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VCK |
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mute |
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RL- |
RL+ |
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VST |
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22 |
4 |
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Q811 |
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FIX EQ |
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Q820 |
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Q810 |
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<MUTE1> |
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BOOST |
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B |
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TMUTE |
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<RL> |
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Q323,327 |
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WF- |
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CUT |
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<FL> |
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Q809 |
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WF+ |
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Q321,325 |
MUTE |
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AUDIO |
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MSENSE |
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+B |
8V REGULATOR |
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<MUTE2> |
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Q806 |
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Q812 |
Q808 |
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<MSEN> |
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IC801 |
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Q803 |
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1 |
NJM2930F08K 3 |
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AUDIO |
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2 |
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WFSTBY |
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+B |
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WOOFER |
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Q801 |
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MUTE2 |
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B.U |
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Q804 |
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5V REGULATOR |
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<MUTE2> |
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Q621 |
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Q802 |
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Q807 |
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<STBYWF> |
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B.U |
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5VD |
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STBY |
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WOOFER |
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<MUTE2> |
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POWER AMP |
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<FL> |
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2 |
IC503 |
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IC501 |
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IC502 |
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<RL> |
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7 |
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7 |
15 |
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2 |
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TA8221AH1 |
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NJM2068MD |
5 |
NJM2068MD |
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BEEP |
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1 |
5 |
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7 |
3 |
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WFSTBY |
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Q501 |
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STBY |
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B |
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4 |
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WOOFER |
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MUTE |
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B.U |
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C |
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RESET |
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13 |
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BEEP |
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Q646 |
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2 |
IC603 |
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1 |
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VDT/VCK/VST |
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BSENSE |
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5VD |
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15 |
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S-80740AND4I |
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BSEN |
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22 |
MUTE1 |
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Q641 |
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24 |
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MSENS |
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ASNSE |
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16 |
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ASEN 14 |
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SYSPW |
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AMPLIFIER |
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23 |
MUTE2 |
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RESET |
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25 |
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CONTROL |
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reset |
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5 |
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AVCPW |
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XIN |
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IC601 |
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TX+ |
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X601 |
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IC602 |
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PD5607B |
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AVCOUT |
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6.290MHz |
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TX- |
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AVCIN |
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CA0008AM |
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XOUT |
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D |
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GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
3.2 BLOCK DIAGRAM (GM-8306ZT/EW)
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A |
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A AMP UNIT |
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CN101 |
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FIX EQ |
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L801 |
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CUT |
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B.U |
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<BEEP> |
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Q221,225 |
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L- |
L+ |
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B |
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BOOST |
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Q223,227 |
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RL+ |
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BEEP |
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CN102 |
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Q141 |
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2 |
IC201 |
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POWER AMP |
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2 |
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1 |
IC203 |
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3 |
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IC101 |
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PMUTE |
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30 |
FLIN |
5 |
FL+ |
+B |
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CDL- |
CDL+ |
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3 |
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IC104 |
NJM2068MD |
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3 NJM2068MD |
12 |
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MUTE |
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NJM2068MD |
1 |
42 |
PMJ002A |
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IC401 |
3 |
FL- |
ACC |
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PAL006A |
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TMUT |
EMUT |
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Q805 |
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3 |
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17 |
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TX- |
TX+ |
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Q143 |
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IC202 |
1 |
IC204 |
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RLIN |
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VDT |
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NJM2068MD |
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3 NJM2068MD |
15 |
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VCK |
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mute |
stby |
RL- |
RL+ |
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VST |
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22 |
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Q811 |
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FIX EQ |
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Q820 |
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Q810 |
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<MUTE1> |
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BOOST |
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B |
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TMUTE |
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Q323,327 |
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CUT |
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Q809 |
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Q321,325 |
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MUTE |
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AUDIO |
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MSENSE |
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+B |
8V REGULATOR |
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<MUTE2> |
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Q806 |
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Q812 |
Q808 |
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<MSEN> |
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IC801 |
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1 |
NJM2930F08K 3 |
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2 |
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Q801 |
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B.U |
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5V REGULATOR |
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<MUTE2> |
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Q621 |
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Q802 |
Q807 |
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B.U |
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5VD |
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STBY |
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<MUTE2> |
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BEEP |
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B |
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B.U |
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RESET |
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13 |
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C |
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BEEP |
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Q646 |
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2 |
IC603 |
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1 |
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VDT/VCK/VST |
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BSENSE |
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5VD |
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15 |
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S-80740AND4I |
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BSEN |
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22 |
MUTE1 |
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Q641 |
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24 |
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MSENS |
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ASNSE |
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16 |
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ASEN 14 |
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SYSPW |
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AMPLIFIER |
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23 |
MUTE2 |
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RESET |
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25 |
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CONTROL |
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reset |
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5 |
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28 |
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AVCPW |
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XIN |
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8 |
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IC601 |
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TX+ |
6 |
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1 |
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4 |
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X601 |
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IC602 |
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PD5607B |
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AVCOUT |
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6.290MHz |
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TX- |
5 |
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2 |
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3 |
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AVCIN |
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29 |
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CA0008AM |
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XOUT |
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D |
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9 |
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1 |
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2 |
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GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
3.3 SCHEMATIC DIAGRAM (GM-8706ZT/UC)
Note: When ordering service parts, be sure to refer to “EXPLODED VIEWS AND PARTS LIST” or “ELECTRICAL
PARTS LIST”.
A-a
A
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Large size |
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SCH diagram |
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A-a |
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A-b |
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A-a |
A-b |
Guide page |
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-24.0dBs |
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-25.4dBs |
A-a |
A-b |
Detailed page |
B
-29.0dBs 1kHz
C
-25.5dBs 1kHz
woofer: -22.0dBs 50Hz
-25.5dBs |
-24.5dBs 50Hz |
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-13.5dBs 50Hz |
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-14.5dBs 50Hz
D
10 A
1 |
2 |
3 |
4 |
5 |
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6 |
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7 |
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8 |
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GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
A-b
A MAIN UNIT
BALANCE INPUT -20dBs f-1kHz f-50Hz
-25.5dBs
+1.0dBs
BALANCE OUTPUT front:+1.0dBs f-1kHz rear:+4.0dBs f-1kHz woofer:+10.0dBs f-50Hz
front: -24.8dBs
rear: -22.0dBs
0dBs =0.775 Vrms -20dBs=77.5 mVrms
NOTE :
Symbol indicates a resistor.
No differentiation is made between chip resistors and discrete resistors.
Symbol indicates a capacitor.
No differentiation is made between chip capacitors and discrete capacitors.
Decimal points for resistor and capacitor fixed values are expressed as :
2.2 |
← |
2R2 |
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0.022 |
← |
R022 |
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A 11
A
B
C
D
5 |
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6 |
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7 |
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8 |
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1 |
2 |
3 |
4 |
GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
1
A
B
C
D
A-a A-b
12 A-a
-25.4dBs
-24.0dBs
front: -24.8dB
29.0dBs |
1kHz |
- |
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1 |
2 |
3 |
4 |
5
rear: -22.0dBs
25.5dBs |
1kHz |
- |
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6 |
7 |
8 |
GM-8706ZT,8706ZT-91,8306ZT,8306ZT-91
2 |
3 |
4 |
A-b |
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A-a |
A |
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50Hz |
|
woofer: -22.0dBs |
14.5dBs 50Hz |
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- |
B
-13.5dBs 50Hz
C
-24.5dBs 50Hz
D
-25.5dBs
A-a 13
5 |
6 |
7 |
8 |
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