5-3.SCHEMATIC DIAGRAM – MAIN Section (1/2) – • See page 18 for Waveforms. • See page 29 for IC Block Diagrams.
– 21 –
– 22 –
5-4.SCHEMATIC DIAGRAM – MAIN Section (2/2) – • See page 18 for Waveforms. • See page 29 for IC Block Diagrams.
XR-1800R
(Page 27)
– 23 –
– 24 –
XR-1800R
5-5.PRINTED WIRING BOARD – PANEL Section –
• Semiconductor
Location
Ref. No. Location
D900B-5
D901B-5
D902B-5
D903B-5
D904A-5
IC900A-6
(Page 19)
– 25 –
– 26 –
5-6.SCHEMATIC DIAGRAM – PANEL Section –• See page 18 for Waveform.
XR-1800R
(Page 24)
– 27 –– 28 –
• IC Block Diagrams
T
– MAIN Board –
IC121 LC7216M
PD
VSS
X OU
20191817
VDD
OUT5
FMIN
16151413 12 11
AMIN
HCTR
LCTR
OUT4
1
X IN
PHASE DETECTOR
CHARGE PUMP
REFERENCE
DIVIDER
23
CE
SWALLOW
COUNTER
1/16, 1/17 4BIT
DI
1/2
4
CL
IC150 TDA7330BD-013TR
UNIVERSAL
COUNTER
12BIT
PROGRAMMABLE
DIVIDER
SHIFT REGISTER LATCH
56789 10
DO
IN 0
IN 1
OUT1
OUT2
OUT3
POR
20
TM
1918171615 14131211
2nd ORDER
ANTIALIAS
FILTER
1
MPXIN
8th ORDER
SC-BANDPASS
FILTER
VCC
2
VREF
FSEL
CMP
4
FILOUT
T7
5
GND
+
–
TEST LOGIC
T1
VCC
ARI
COSTAS
LOOP
PLL
57kHz
T3
OUAL
PHASE
DECODER
RECOVERY
1.4675kHz
T4
CLOCK
PLL
RODA
DIFF
DECODER
ROCL
ON/OFF
OSCILLATOR
fx DIVIDER
1098673
OSCOUT
T57
OSCIN
– 29 –
IC450 LC75372E
ROUT
RFIN
RFOUT
RROUT
RVREF
VREF
LVREF
LROUT
LFOUT
LFIN
LOUT
RIN
RT3
RT2
RT1
32
33
34
35
36
37
38
39
40
41
42
43
44
–
+
RVREF
+
–
+
–
–
+
–
+
LVREF
+
–
31
30
RVREF
RVREF
LVREF
LVREF
R10dBOUT
29
RVREF
+
–
–
+
LVREF
+
–
LATCH
–
+
RCT2
28
DECODER
+
–
+
–
R10dBIN
26
RVREF
LVREF
RSELO
SHIFT
REGISTER
RCT1
27
NC
R3
23
2425
RVREF
+
–
RVREFRVREF
CONTROL
LVREFLVREF
–
+
LVREF
R2
22
21
R1
20
TEST
19
VSS
NC
18
CL
17
DI
16
CE
15
VDD
14
L1
13
12
L2
1
LT3
3
2
LT2
LT1
4
5
LIN
L10dBOUT
6
LCT2
7
LCT1
8
9
L10dBIN
LSELO
11
10
L3
NC
– 30 –
5-7. IC PIN FUNCTION DESCRIPTION
• MAIN BOARD IC1 MN1884820SF (SYSTEM CONTROLLER)
Pin No.Pin NameI/OFunction
1TUNMUTOFM audio signal muting control output terminal “H”: muting on
2AMPONOStandby control signal output to the power amplifier (IC500) “L”: standby
3ILLONO
4PW ONOMain system power supply on/off control signal output terminal “H”: power on
5AMPMUTEOMuting control signal output to the power amplifier (IC500) “L”: muting on
6NILINot used (fixed at “L”)
7VDD1—Power supply terminal (+5V)
8X INIMain system clock input terminal (8 MHz)
9X OUTOMain system clock output terminal (8 MHz)
10GND—Ground terminal
11XT INISub system clock input terminal (32.768 kHz)
12XT OUTOSub system clock output terminal (32.768 kHz)
13EX2IConnected to ground
14RESETI
15RDSCKIISerial data transfer clock signal input from the RDS decoder (IC150)
16BU INIBattery detect signal input terminal “H”: battery on
17KEYACKI
18VOLSOOSerial data output to the electrical volume (IC450)
19VOLCKOOSerial data transfer clock signal output to the electrical volume (IC450)
20VOLCEOChip enable signal output to the electrical volume (IC450)
21TAPE MUTEOTape muting on/off control signal output terminal “H”: tape muting on Not used (open)
22 to 24NCOONot used (open)
25AMS ONO
26ATA ONINot used (fixed at “H”)
27TAPE INITape in detection switch (S903) input terminal “L”: tape in
28FF-REW INIFF/REW detection switch (S902) input terminal “L”: FF/REW mode
29N/RI
30RDSSIISerial data input from the RDS decoder (IC150)
31AD ONOPower supply on/off control signal output for the A/D converter “L”: power on
32, 33NCOONot used (open)
34CM ONOCapstan/reel motor (M901) drive signal output terminal “H”: motor on
35TAPE ONO
36ACC INIAccessory detect signal input terminal “L”: accessory on
37PLLSIIPLL serial data input from the FM/AM PLL (IC121)
38BEEPOBeep sound signal output terminal
39PLLSOOPLL serial data output to the FM/AM PLL (IC121)
40PLLCLKOPLL serial data transfer clock signal output to the FM/AM PLL (IC121)
41PLLCEOPLL serial chip enable output to the FM/AM PLL (IC121)
42LCD INHO
Power supply on/off control signal output terminal at the illumination and liquid crystal display
driver (IC900) “H”: power on
System reset signal input from the reset signal generator (IC50) and reset switch (S2)
“L” is input for several 100 msec after power on, then it changes to “H”
Input of acknowledge signal for the key entry Acknowledge signal is input to accept function
and eject keys in the power off status On at input of “H”
Tape auto music sensor control signal output terminal
“L” is output to lower the gain for audio level at FF/REW Not used (open)
Tape direction switch (S901) input terminal
“L: reverse direction, “H”: forward direction
Tape system power supply on/off control signal output terminal “H”: tape on
Not used (open)
Blank indicate control signal output to the liquid crystal display driver (IC900)
“L”: no display
– 31 –
Pin No.Pin NameI/OFunction
43LCD CEOChip enable output to the liquid crystal display driver (IC900)
44LCD CLKOSerial data transfer clock signal output to the liquid crystal display driver (IC900)
45NCOONot used (open)
46LCD SOOSerial data output to the liquid crystal display driver (IC900)
47VDD2—Power supply terminal (+5V)
48AVDD—Power supply terminal (+5V) (for A/D converter)
49AVREF+IReference voltage input terminal (+5V) (for A/D converter)
50KEYIN1IKey input terminal (A/D input) OFF, PTY, LOUD, 6/5/3/2/4/1 ATA keys input (S950 to 957)
51KEYIN0I
52KEYSEL1ISetting terminal for the key function (fixed at “L”)
53KEYSEL0ISetting terminal for the key function (fixed at “L”)
54DSTSEL1IDestination setting terminal (fixed at “L”)
55DSTSEL0IDestination setting terminal (fixed at “L”)
56NILINot used (fixed at “L”)
57FM VSMIFM and AM signal meter voltage detection input from the FM/AM tuner unit (TU100)
58AVREF–IReference ground terminal
59AVSS—Ground terminal (for A/D converter)
60GND—Ground terminal
61, 62NCOONot used (open)
63SEEK OUTOSeek control signal output to the FM/AM tuner unit (TU100)
64TUN ONOTuner system power supply on/off control signal output terminal “H”: tuner on
65FM ONOFM system power supply on/off control signal output terminal “H”: FM on
66MUTEOLine muting control signal output terminal “H”: line muting on Not used (open)
67AF SEEKO
68NCOONot used (open)
69NOSESWIDetects the removal of the attaching and removing type front panel block “L”: attaching
PLL low-pass filter time constant selection signal output at AF seek
“H” is output when AF seek
Input of FM stereo detection signal from FM/AM tuner unit (TU100), and output of forced
monaural control signal to FM/AM tuner unit (TU100) (Commonly used for stereo display
input and forced monaural output)
FM stereo detection at input of “L”, forced monaural at output of “L”
71SD INI
72NILINot used (fixed at “L”)
73PW SELI
74 to 78NILINot used (fixed at “L”)
79TESTISetting terminal for the test mode “L”: test mode (normally fixed at “H”)
80NILINot used (fixed at “L”)
Station detector detect input from the FM/AM tuner unit (TU100)
Stop level for SEEK, BTM, etc. is determined SD is present at input of “H”
Power select switch input terminal
“L”: halt mode, “H”: operation mode Not used (fixed at “L” in this set)
– 32 –
SECTION 6
EXPLODED VIEWS
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑↑
Parts Color Cabinet's Color
(1)GENERAL SECTION
7
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference number in the exploded views are not supplied.
• Hardware (# mark) list and accessories and
packing materials are given in the last of the
electrical parts list.
MG-36SZ9-32
17
9
8
11
• Abbreviation
G: German
SE : South European
10
#3
14
#2
6
#2
5
#2
2
#2
#4
#4
4
3
18
1
#2
#1
Front panel section
Ref. No.Part No.DescriptionRemark
13-022-475-01 PANEL, SUB
2X-3367-636-1 LOCK ASSY
33-924-404-11 DOOR, CASSETTE
43-377-892-01 SPRING (C DOOR), TORSION
PL9011-517-534-11 LAMP, PILOT (GREEN) (ILLUMINATION)
PL9011-517-535-11 LAMP, PILOT (AMBER) (ILLUMINATION)
PL9021-517-534-11 LAMP, PILOT (GREEN) (ILLUMINATION)
PL9021-517-535-11 LAMP, PILOT (AMBER) (ILLUMINATION)
PL9031-517-534-11 LAMP, PILOT (GREEN) (ILLUMINATION)
PL9031-517-535-11 LAMP, PILOT (AMBER) (ILLUMINATION)
PL9041-517-534-11 LAMP, PILOT (GREEN)
R9131-216-198-00 RES,CHIP1K5%1/8W
R9201-216-647-11 METAL CHIP6800.5%1/10W
R9211-216-647-11 METAL CHIP6800.5%1/10W
R9221-216-647-11 METAL CHIP6800.5%1/10W
R9231-216-651-11 METAL CHIP1K0.5%1/10W
R9241-216-655-11 METAL CHIP1.5K0.5%1/10W
R9251-216-655-11 METAL CHIP1.5K0.5%1/10W
R9261-216-659-11 METAL CHIP2.2K0.5%1/10W
R9271-216-663-11 METAL CHIP3.3K0.5%1/10W
R9501-216-647-11 METAL CHIP6800.5%1/10W
R9511-216-657-11 METAL CHIP1.8K0.5%1/10W
R9521-208-776-11 RES,CHIP5600.5%1/10W
R9531-216-655-11 METAL CHIP1.5K0.5%1/10W
R9541-216-655-11 METAL CHIP1.5K0.5%1/10W
R9551-216-659-11 METAL CHIP2.2K0.5%1/10W
R9561-216-663-11 METAL CHIP3.3K0.5%1/10W
R9571-216-667-11 METAL CHIP4.7K0.5%1/10W
IC18-759-549-48 IC MN1884820SF
IC508-759-363-81 IC XC61AN4002PR
IC1208-759-242-66 IC TC4W66F
IC1218-759-823-81 IC LC7216M
IC1508-759-163-63 IC TDA7330BD-013TR
IC3508-759-924-46 IC BA4560F
IC4508-759-368-11 IC LC75372E
IC5008-759-490-48 IC HA13158
< SHORT >
JC41-216-295-00 SHORT 0
JC51-216-296-00 SHORT 0
JC61-216-295-00 SHORT 0
JC71-216-295-00 SHORT 0
JC81-216-295-00 SHORT 0
JC91-216-295-00 SHORT 0
JC101-216-296-00 SHORT 0
JC121-216-296-00 SHORT 0
JC141-216-295-00 SHORT 0
JC151-216-296-00 SHORT 0
JC161-216-296-00 SHORT 0
JC171-216-295-00 SHORT 0
JC181-216-295-00 SHORT 0
JC201-216-295-00 SHORT 0
JC311-216-296-00 SHORT 0
JC321-216-296-00 SHORT 0
JC351-216-295-00 SHORT 0
JC361-216-296-00 SHORT 0
JC371-216-295-00 SHORT 0
JC381-216-295-00 SHORT 0
R61-216-109-00 METAL CHIP330K5%1/10W
R71-216-097-00 RES,CHIP100K5%1/10W
R81-216-057-00 METAL CHIP2.2K5%1/10W
R91-216-057-00 METAL CHIP2.2K5%1/10W
R101-216-057-00 METAL CHIP2.2K5%1/10W
R1051-216-065-00 RES,CHIP4.7K5%1/10W
R1061-216-073-00 METAL CHIP10K5%1/10W
R1071-216-049-11 RES,CHIP1K5%1/10W
R1101-216-057-00 METAL CHIP2.2K5%1/10W
R1111-216-073-00 METAL CHIP10K5%1/10W
R1121-216-206-00 RES,CHIP2.2K5%1/8W
R1131-216-073-00 METAL CHIP10K5%1/10W
R1141-216-073-00 METAL CHIP10K5%1/10W
R1151-216-057-00 METAL CHIP2.2K5%1/10W
R1191-216-075-00 METAL CHIP12K5%1/10W
R1201-216-001-00 METAL CHIP105%1/10W
R1211-216-049-11 RES,CHIP1K5%1/10W
R1221-216-073-00 METAL CHIP10K5%1/10W
R1231-216-238-91 RES,CHIP47K5%1/8W
R1241-216-061-00 METAL CHIP3.3K5%1/10W
R1251-216-206-00 RES,CHIP2.2K5%1/8W
R1261-216-073-00 METAL CHIP10K5%1/10W
R1271-216-049-11 RES,CHIP1K5%1/10W
R1281-216-049-11 RES,CHIP1K5%1/10W
R1291-216-077-00 METAL CHIP15K5%1/10W
R1501-216-129-00 METAL CHIP2.2M5%1/10W
R1511-216-071-00 METAL CHIP8.2K5%1/10W
R2001-216-077-00 METAL CHIP15K5%1/10W
R2501-216-065-00 RES,CHIP4.7K5%1/10W
(G)
R2501-216-073-00 METAL CHIP10K5%1/10W
(AEP, UK, SE)
R2511-216-065-00 RES,CHIP4.7K5%1/10W
(G)
R2511-216-073-00 METAL CHIP10K5%1/10W
(AEP, UK, SE)
R2521-216-073-00 METAL CHIP10K5%1/10W
R2531-216-073-00 METAL CHIP10K5%1/10W
R2541-216-089-00 RES,CHIP47K5%1/10W
– 42 –
MAIN
Ref. No.Part No.DescriptionRemark
R3501-216-095-00 METAL CHIP82K5%1/10W
R3511-216-095-00 METAL CHIP82K5%1/10W
R3521-216-075-00 METAL CHIP12K5%1/10W
R3531-216-073-00 METAL CHIP10K5%1/10W
R3541-216-023-00 METAL CHIP825%1/10W
R3551-216-023-00 METAL CHIP825%1/10W
R3561-216-091-00 METAL CHIP56K5%1/10W
R3571-216-091-00 METAL CHIP56K5%1/10W
R3581-216-119-00 METAL CHIP820K5%1/10W
R3591-216-119-00 METAL CHIP820K5%1/10W
R3601-216-001-00 METAL CHIP105%1/10W
R3611-216-071-00 METAL CHIP8.2K5%1/10W
R3621-216-071-00 METAL CHIP8.2K5%1/10W
R3631-249-385-11 CARBON2.25%1/4W
R3641-249-385-11 CARBON2.25%1/4W
R5731-249-429-11 CARBON10K5%1/4W
R5741-216-129-00 METAL CHIP2.2M5%1/10W
R5751-216-129-00 METAL CHIP2.2M5%1/10W
R5761-216-129-00 METAL CHIP2.2M5%1/10W
R5771-216-129-00 METAL CHIP2.2M5%1/10W
R6061-216-069-00 METAL CHIP6.8K5%1/10W
R6071-216-089-00 RES,CHIP47K5%1/10W
R6081-216-073-00 METAL CHIP10K5%1/10W
R6091-216-057-00 METAL CHIP2.2K5%1/10W
R6101-216-073-00 METAL CHIP10K5%1/10W
R6111-216-041-00 METAL CHIP4705%1/10W
R6121-216-073-00 METAL CHIP10K5%1/10W
R6131-216-198-00 RES,CHIP1K5%1/8W
R6141-216-081-00 METAL CHIP22K5%1/10W
R6151-216-073-00 METAL CHIP10K5%1/10W
R6161-249-421-11 CARBON2.2K5%1/4W
R6201-216-097-00 RES,CHIP100K5%1/10W
R6211-216-081-00 METAL CHIP22K5%1/10W