HYT TR-50 Series, Service Manual

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1 2 3 4
A
B
C
D
4 3 2 1
D
C
B
A
MODEL NAME
FILE NO. REV
HYT Science & Technology Co.,Ltd
DRAWN BY CHECKED APPROVAL
PAGE
OF
DATE
PART NAME
1
1
2
2
3
3
4
4
5
5
6
6
JP1
CONN SOCKET 3x2
R10
3K
1
2
3
D2
BAW56
VDD
2
OUT
1
VSS
3
IC1 HT7050A
R5
5.1K
1
2
J2
CON2
C5
470p
R8
1K (1/4W)
VR1
10K
Q1
PSS8550D
1
2
J1
CON2
R6
10K
R2
1K Ω /2W
VR2
10K 负温
3
1
2
Q2 MMBT3906
D4
BAV70
C2
470pF
F1
3A
C1
470pF
R9
2K
C6
470p
3
1
2
Q3
2SB798
3
1
2
Q4
MMBT3906
VIN
3
ADJ
1
VOUT
2
U1
LM317T
R4 470 Ω
R1
0.22 Ω /2W
+
C4
1.5uF/10V
+
C3
0.1uF
D3
9.1V / 1A
+
-
4
1
2
3
D1
KBPC606
1
2
3
J4
CON3
R3
270 Ω
R7
15K
1
2
3
J5
CON3
GND GND
GND
+
GND
GND
GND
GND
GND
GND
GND
PTT
8V
12V
DC 13.8V
SW1
POWER MANAGEMENT BOARD
00
1 2 TR-50
R. Leung
June, 2004