Table of Contents
Advertisement
HCD-RG66T
7-15. SCHEMATIC DIAGRAM – MAIN (3/4)/HEAD (A)/HEAD (B) Boards – •
(FOR ADJUSTMENT)
(DECK A)
HP901
(PB)
L-CH
R-CH
TAPE
MECHANISM DECK
BLOCK
(CHASSIS)
(TCM-230AWR41)
CN2
HRPE901
6P
(REC/PB/ERASE)
1
L-CH
R-CH
ERASE
7
(DECK B)
(Page 32)
(3/4)
IC303(2/2)
NJM4565M(TE2)
C399
R397
0.01
15k
C398
0.01
LOW-PASS
FILTER
R398
2.2M
C395
22p
R313
R327
1k
15k
R333
C316
2.2k
1
R362
10k
Q306
FA1A4M
R334
MUTING
100k
Q389
FA1A4M
CN301
MUTING CONTROL
3P
L
SWITCH
C391
C390
R314
100
470
1k
GND
10V
10V
R
CN1
NO302
3P
3P
C321
L-PB
YY1
TP321
390p
GND
TP322
R-PB
YY2
TP323
C371
390p
R393
4.7k
NO303
8P
C326
L-PB
TP301
390p
YY3
Q304
FN1F4M
GND
L-REC
TP303
R-PB
TP304
C376
390p
YY5
GND
R-REC
TP306
YY6
Q305
FA1A4M
GND
TP307
E-HOT
TP308
RV304
220k
(CHASSIS)
R371
C334
CN304
47k
27p
YY4
17P
TP317
BMETAL
BPLAY.SW
57
B
120
/70
R373
BHALF
91
1k
R374
APLAY.SW
56
47k
BSHUT
90
R375
A 120
/70
75k
T301
Q302
+3.3V
2SC2001
BIAS OSC
R377
AHALF
70
47k
DGND
ASHUT
89
BTRGM+
XX1
R378
75k
C335
0.01
TRGMGND
100V
ATRGM+
XX2
C336
CAPMH/L
XX3
2.2
50V
R343
R344
CAPM+
XX4
5.6
5.6
CAPM-
See page 28 for Waveforms.
JR390
IC303(1/2)
NJM4565M(TE2)
R315
C315
10k
1
R365
C365
10k
1
C397
R388
R387
10
22k
10k
50V
Q390
FA1A4M
BUFFER
Q398
FA1A4M
R395
BUFFER
4.7k
Q399
2SC3624A
BUFFER
C396
R396
R390
22
10k
10k
50V
REC/PB SWITCHING
IC302
µPC1330H
C385
10
50V
C332
C333
0.00012
330p
R332
R342
8.2k
2.2k
Q304,305
L301
27mH
R329
REC/PB SWITCHING
10k
C331
0.01
C383
C381
L351
330p
0.01
27mH
R379
R392
10k
C384
2.2k
RV354
27p
220k
C382
R382
0.00012
8.2k
Q301
Q307
2SC3624
2SA812
Q302,303
R316
10k
BIAS OSC
Q391
2SB1116
C337
15000p
R328
2.2k
R317
10k
Q301,307,310
C362
REC BIAS
4700p
SWITCH
Q303
2SC2001
Q392
C341
C342
FA1A4M
R347
10
47
3.3k
Q310
50V
16V
FA1A4M
69
65
XX1
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
[
] : TAPE PLAY (DECK A)
{
} : TAPE PLAY (DECK B)
〈〈
〉〉 : REC
36
36
(Page 34)
C311
R304
R305
R302
C314
10
2.2k
47k
4.7k
2200p
50V
R330
22k
RV301
47k
R320
2.2k
C305
C303
1
0.1
50V
C306
R301
C304
2.2
3.3k
50V
C301
0.01
TP325
TP318
DECK A/B SELECT
SWITCH,
REC/PB EQ AMP,
ALC
IC301
HA12237
PB-NF1B
PB-
C309
47 16V
NF1A
TEST
AIN1
YY1
I-REF
C310
10 50V
RIP
GND
ALC
YY3
BIN1
DET
REC-
RETN
VCC
REC MUTE
GND
ON/OFF
YY5
BIN2
MUTE
ON/OFF
NC
A/B
TP338
AIN2
YY2
NORMAL/HIGH
SPEED
PB-
ALC ON/
NF2A
OFF
C359
47
16V
C351
0.01
R351
C354
3.3k
C356
2.2
50V
C364
R352
R370
R354
RV351
2200p
4.7k
2.2k
2.2k
47k
R355
47k
R360
R364
680
680
Q396
2SB1068
Q393
Q391,392
Q393,394
2SB1116
TRIGGER PLUNGER
TRIGGER PLUNGER
DRIVE(DECK B)
DRIVE(DECK A)
R361
R391
C363
R363
R399
2.2k
2.2k
4700p
2.2k
2.2k
Q394
Q395
FA1A4M
FA1A4M
FA1A4M
INVERTER
52
51
54
XX2
XX3
XX4
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
E1
E2
R394
10k
53
E3
TP320
R306
22k
R307
1M
C308
C307
470
L302
10
100µH
16V
50V
R308
100
61
C312
R309
58
10 50V
4.7k
R310
100
67
(Page 37)
R311
100
66
R312
100
68
C361
R380
10
22k
50V
E4
R367
47k
Q396,397
CAPSTAN MOTOR
DRIVE
R366
R368
R369
3.3k
3.3k
3.3k
Q397
E5
55
E6
E7
Advertisement
Table of Contents
