XR-C6100
SERVICE MANUAL
Saudi Arabia Model
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol a are trade-
marks of Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
NEW
MG-25F-136
SPECIFICATIONS
– Continued on next page –
FM/MW/SW CASSETTE CAR STEREO
MICROFILM
Pin No.
Pin Name
I/O
Function
Loading/tape operation motor control signal output to the LB1638M (IC361)
(For the eject direction and reverse side operation) *1
37
LM EJ
O
Forward/reverse direction control signal output to the CXA2510AQ (IC301)
“L: forward direction, “H”: reverse direction
38
N/R OUT
O
39
40
41
42
43
44
P.ON
CM ON
TAPEON
COLSEL
RC IN1
TEST
O
O
O
I
Polar stereo detection signal output terminal “H”: polar stereo Not used (open)
Capstan/reel motor (M901) drive signal output terminal “H”: motor on
Tape system power supply on/off control signal output terminal “H”: tape on
Setting terminal for the illumination color “L”: amber, “H”: green (fixed at “H”)
Rotary remote commander shift key A/D input terminal
I
I
Setting terminal for the test mode “L”: test mode (normally fixed at “H”)
Power supply on/off control signal output terminal at the illumination and liquid crystal display
driver (IC901) “H”: power on
At power select switch (S501) on mode: “H” output at the accessory on
At power select switch (S501) off mode: “H” output at the power on
45
ILL ON
O
46
47
48
49
50
51
52
53
BEEP
MUT
O
O
O
O
O
O
O
O
Beep sound signal output terminal
Line muting control signal output terminal “H”: line muting on
Chip enable signal output to the electrical volume (IC161)
Chip enable signal output terminal Not used in this set (open)
Serial data transfer clock signal output to the electrical volume (IC161)
Serial data transfer clock signal output terminal Not used in this set (open)
Serial data output to the electrical volume (IC161)
VOLCE
SUBCE
VOLCKO
SUBCKO
VOLSO
TAPMUT
Tape muting on/off control signal output to the CXA2510AQ (IC301) “H”: tape muting on
Dolby control in/out terminal
At initial mode: valid/invalid selection input of dolby function (“L” input: valid)
At normal mode: dolby on/off control signal output to the CXA2510AQ (IC301)
“H”: dolby on
54
DOLON
I/O
Dolby B/C selection control in/out terminal
At initial mode: dolby B only/dolby B and C type selection input (“L” input: dolby B and C)
At normal mode: dolby type selection signal output “L”: dolby B, “H”: dolby C
Not used this function (fixed at “H”)
55
56
DOLBC
AMSIN
I/O
I
Whether a music is present or not from CXA2510AQ (IC301) is detected at auto music sensor
“L”: music is present, “H”: music is not present
METAL control in/out terminal
At initial mode: auto/manual mode selection input of METAL function “L”: manual mode
At manual mode: METAL on/off control signal output to the CXA2510AQ (IC301)
“H”: METAL on
57
MTLSEL
I/O
At auto mode: input at MTLIN (pin #º)
58
59
AD ON
O
I
Power supply on/off control signal output for the A/D converter “L”: power on
Internal RAM reset detection signal input from the RN5VD23AA (IC651)
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset
RAMBU
System reset signal input from the reset signal generator (IC652) and reset switch (S503)
“L” is input for several 100 msec after power on, then it changes to “H”
60
RESET
I
61
62
63
64
65
66
SIRCS
BU IN
I
I
I
I
I
I
Sircs signal input from the remote control receiver (IC902)
Battery detect signal input terminal “H”: battery on
PW SEL
ACCIN
Power select switch (S501) input terminal “L”: off (halt mode), “H”: on (operation mode)
Accessory detect signal input terminal “L”: accessory on
NOSESW
TELMUT
Detects the removal of the attaching and removing type front panel block “L”: attaching
Telephone muting signal input terminal At input of “L”, the signal is attenuated by –20 dB
– 18 –
Pin No.
Pin Name
I/O
Function
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”
67
KEYACK
I
68
69
70
71
72
73
74
75
VDD
X OUT
X IN
—
O
I
Power supply terminal (+5V)
Main system clock output terminal (5 MHz)
Main system clock input terminal (5 MHz)
Ground terminal
GND
—
O
I
XT OUT
XT IN
AVDD
AVREF0
Sub system clock output terminal (32.768 kHz)
Sub system clock input terminal (32.768 kHz)
Power supply terminal (+5V) (for A/D converter)
Reference voltage input terminal (+5V) (for A/D converter)
—
I
Key input terminal (A/D input)
OFF, SOURCE, MODE *, SEEK AMS + + ), SEEK AMS = 0 –, VOLUME –,
SEL, VOLUME +, DSPL, ATT keys input (LSW901 to LSW910)
76
77
KEYIN0
KEYIN1
I
I
Key input terminal (A/D input)
6, INTRO 1, REPEAT 2, SHUF/a 3, BL SKIP 6, ATA 5, BANK/MTL 4, BTM LCL, FILE,
PRESET DISC +/– keys input (LSW921 to LSW931)
78
79
80
D-BASS
VSM
I
I
I
D-BASS switch (SW951) input (A/D input)
FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU1)
Setting terminal for the key (fixed at “L”)
KEYSEL
*1 loading/tape operation motor control
MODE
STOP
LOADING/
FORWARD
EJECT/
REVERSE
BRAKE
TERMINAL
LM LOD (pin #§)
“L”
“L”
“H”
“L”
“L”
“H”
“H”
“H”
LM EJ (pin #¶)
– 19 –
XR-C6100
6-4. SCHEMATIC DIAGRAM – MAIN Section (1/2) – • See page 31 and 32 for IC Block Diagrams.
– 23 –
– 24 –
XR-C6100
6-5. SCHEMATIC DIAGRAM – MAIN Section (2/2) – • See page 32 for IC Block Diagramas.
• Waveforms
1 IC1 1 (XO)
4.2 Vp-p
7.2 MHz
2 IC501 ^ª (XOUT)
4.6 Vp-p
5 MHz
3 IC501 &™ (XT_OUT)
5 Vp-p
32.768 kHz
– 25 –
– 26 –
XR-C6100
6-7. SCHEMATIC DIAGRAM – PANEL Section –
– 29 –
– 30 –
• IC Block Diagrams
– MAIN BOARD –
IC1 BU2624F-E2
IC301 CXA2510AQ-T4
20 VSS
19 PD1
1
2
XOUT
XIN
REFERENCE
DIVIDER
30
29 28 27 26
25
24
23 22 21
NR
PHASE
DETECT
120µ/
70µ
T2
+
–
18 VDD
20
MSMODE
19 DRSW
18
+
–
NR BIAS
TAPE/AUX
TAPE EQ
FWD/RVS
VCC
MS
MODE
PBFB1 31
X1
I/O
CONTROL
PBRIN1 32
3
4
CE
CK
TAPESW
17
16
FMIN
AMIN
F2
33
34
PBREF1
PBFIN1
17 INSW
NR
MODE
16 NRSW
5
6
DA
CD
MAIN
COUNT
VCT 35
VCT
15 NC
PBGND
36
MS ON/
OFF
+
LPF
+
–
DETECT
SHIFT
REGISTER
LATCH
7
8
PRESCALLER
P0
P1
P3
P4
14 MSOUT
13 DGND
37
PBFIN2
F3
F1
15
P2
PBREF2 38
X1
PBRIN2
PBFB2
39
40
14 IF1
12 MSTC
11 FF
–
+
IF COUNT
CONTROL
9
–
+
OFF/B
NR
T1
120µ/
70µ
10
13
20BIT COUNT
IF2
2
3
4
5
6
7
8
9
10
1
12
11
SD
PD2
IC361 LB1638M
IC611 TDA7384
10
1
N.C.
GND
IC161 LC75373ED
DRIVER
DRIVER
DRIVER
DRIVER
2
9
OUT1
IN1
33
32
31 30 29
28 27 26
25 24
23
8
7
VS
+
–
–
+
VCC
IN2
3
4
22 LFIN
+
–
OUT2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19
20
21 22 23
24 25
1
2
–
+
+
–
21 LFOUT
34
LSELO
5
6
N.C.
GND
L4 35
L3 36
L2 37
L1 38
+
–
LROUT
VREF
20
–
+
+
–
+
–
19
VDD 39
+
–
SHIFT
REGISTER
IC671 BA3918-V2
IC701 BA8270F-E2
18
17
16
15
14
DECODER
LATCH
CONTROL
CE
DI
–
+
R1
40
CL
+
–
R2 41
R3 42
R4 43
VSS
RROUT
–
+
BUS ON
SWITCH
14 VCC
BUS ON
1
2
3
RSELO 44
–
+
REGULATOR
RESET
SWITCH
+
–
13
RST
RST
13
RFOUT
12 BUS ON
11 CLK IN
10 BU IN
–
+
+
–
–
+
BATTERY
SWITCH
12 RFIN
BATT
OVER VOLTAGE
PROTECT
2
3
4
5
6
7
8
9
10
11
1
4
5
6
CLK
VREF
DATA
–
+
–
–
–
9
8
DATA IN
+
+
+
GND
7
DATA OUT
2
3
4
5
6
7
8
9
10
11
12
1
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– 32 –
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